preliminary report on the petrography of the upper jurassic … · 2010-11-17 · preliminary...

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UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Preliminary report on the petrography of the Upper Jurassic Morrison Formation, Mariano Lake-Lake Valley Drilling Project, McKinley County, New Mexico By Brenda A. Steele 1 Open-File Report 84-170 This report is preliminary and has not been reviewed for conformity with U.S, Geological editorial standards and stratigraphic nomenclature. ^.S. Geological Survey Box 25046, MS 916, Denver Federal Center, Denver, CO 80225 1984

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Page 1: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

UNITED STATES DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

Preliminary report on the petrography of the Upper Jurassic Morrison Formation, Mariano Lake-Lake Valley Drilling Project,

McKinley County, New Mexico

By

Brenda A. Steele 1

Open-File Report 84-170

This report is preliminary and has not been reviewed for conformity with U.S, Geological editorial standards and stratigraphic nomenclature.

^.S. Geological Survey Box 25046, MS 916, Denver Federal Center, Denver, CO 80225

1984

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CONTENTS

Page

Description of Project................................................... 1Geology.................................................................. 5Methods.................................................................. 5Results.................................................................. 5References cited......................................................... 12

FIGURES

Figure 1. Location map of study area.................................... 22. North-south cross section of drill holes...................... 33. Generalized stratigraphic column.............................. 64. Quartz-feldspar-lithic fragment ternary diagram,

Brushy Basin Member samples.............................. 95. Quartz-feldspar-lithic fragment ternary diagram,

Westwater Canyon Member samples.......................... 106. Quartz-feldspar-lithic fragment ternary diagram,

Recapture Member samples................................. 11

PLATES

[Plates are in the pocket]

Plate 1. Downhole plots-hole S-l2. Downhole plots-hole S-33. Downhole plots-hole S-44. Downhole plots-hole S-55. Downhole plots-hole S-66. Downhole plots-hole S-77. Downhole plots-hole S-7a

TABLES

[Tables 2-8 are in Appendix 1]

Table 1. Sample distribution............................................ 42.3.4.5.6.7.8.

General General General General General General General

petrography of the Morrison Formation, hole S-l petrography of the Morrison Formation, petrography of the Morrison Formation, petrography of the Morrison Formation, petrography of the Morrison Formation

..... 18hole S-3........ 22hole S-4........ 26hole S-5............ 30

..... 34

..... 38petrography of the Morrison Formation, hole S-7a....... 42

hole S-6, petrography of the Morrison Formation, hole S-7,

Page 3: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

APPENDIX

Page

Appendix 1. Explanation of computer-generated tables.................... 14Appendix 2. Explanation of computer-generated downhole plots............ 43

11

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PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSICMORRISON FORMATION, MARIANO LAKE-LAKE VALLEY DRILLING PROJECT,

MCKINLEY COUNTY, NEW MEXICO

By Brenda A. Steele

DESCRIPTION OF PROJECT

The U.S. Geological Survey, in cooperation with the U.S. Bureau of Indian Affairs and the Minerals Department of the Navajo Tribe, conducted a drilling project in the vicinity of Crownpoint, New Mexico to study the Upper Jurassic Morrison Formation. The Morrison Formation in this area contains some of the world's largest sandstone-hosted uranium deposits. Twelve holes were drilled along a northeast line from Mariano Lake to Lake Valley (fig. 1) and were roughly perpendicular to the general trend of the uranium-rich Grants Mineral Belt and parallel to the dip of the Morrison in this area. Core was recovered from holes 1, 3, 4, 5, 6, 7, 7a and 8 with uranium ore bodies intersected in holes 3, 4, 7, and 7a (fig. 2). See Huffman and others (1981a), Huffman and others (1981b), Kirk and others (1981a), Kirk and others 1981b), Kirk and others (1981c), Zech and others (1981a) and Zech and others (1981b) for lithologic descriptions of the core. Core samples and geophysical logs were used for detailed petrologic, sedimentologic, geophysical and geochemical studies of the Morrison. This report precedes a detailed report on the petrography of 209 samples of the Morrison Formation collected from holes 1, 3, 4, 5, 6, 7 and 7a (table 1) and contains only the basic data obtained from this study. All computer work for this report was done under contract by W. Lincoln Materna of Petroleum Information Company.

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Page 6: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Table 1. Distribution, by drill hole, of sandstone samples

examined from the Morrison Formation,

Mariano Lake-Lake Valley drilling project cores

Core Core Core Core Core Core Core

1 3 4 5 6 7 7a

Brushy Basin

Westwater Car

Member

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Total 26 33 35 26 33 39 17

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GEOLOGY

The Mariano Lake-Lake Valley study area is located in the southwestern portion of the San Juan Basin flanked by the Zuni Mountains to the south and the Defiance Plateau to the west (fig. 1). Jurassic-age rocks, including the Morrison Formation crop out along the southern edge of the basin and dip gently northward away from the Zuni Mountains into the basin center. In the southern part of the study area, the Morrison is conformably underlain by and interfingers with an unnamed Jurassic eolian sandstone that pinches out between holes 2 and 6. North of the pinchout the Morrison is underlain by the Jurassic Summerville(?) Formation. Throughout the study area the Morrison is unconformably overlain by the Upper Cretaceous Dakota Sandstone.

In this region, the Morrison Formation is divided into three members, in ascending order: the Recapture, Westwater Canyon and Brushy Basin (fig. 3). The Recapture Member consists of light-colored, thin, fine-grained sandstone, claystone and mudstone. Depositional environments of the Recapture Member are varied and include eolian, fluvial and lacustrine. The Westwater Canyon Member was deposited largely by fluvial processes and consists of thick, fine­ grained to conglomeratic sandstone interbedded with thin, greenish, bentonitic mudstone. The Brushy Basin Member is dominantly gray green, bentonitic mudstone and claystone with a few thin sandstones and was deposited largely by lacustrine processes. For a more detailed discussion of the stratigraphy of the Morrison Formation in this area refer to Craig and others (1955), Freeman and Hilpert (1956), and Harshbarger and others (1957).

METHODS

A total of 209 sandstone samples from seven cores (table 1) were examined in thin section for texture and composition. Fine- to medium-grained portions of individual sandstone units in the Morrison Formation were sampled at approximately 10 to 20 foot intervals with spacing closer in mineralized zones. Thin sections were cut perpendicular to observed bedding in the core. All thin sections were stained with sodium cobaltinitrate to aid in identifying potassium feldspar. Each thin section was also impregnated with blue epoxy to enhance the void spaces. Porosity was considered to be any naturally occurring void space, either primary or secondary. Care was taken to disregard any void that may have been created during sample preparation.

For each sample, 300 points were counted for composition and the longest dimension of 100 grains was measured for average grain-size determination. Sorting values as phi standard deviation were determined as described by Folk (1974). Diagenetic processes have greatly altered the morphology of many of the detrital grains, thus no attempt was made to quantify either roundness or sphericity.

RESULTS

Tables 2-8 (Appendix 1) show selected textural and compositional information for individual samples from each hole. Computer-generated downhole plots of the data in tables 2-8 are on plates 1-7.

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Figure 3.--Generalized stratigraphic column of Upper Jurassic Morrison Formation, southwestern San Juan Basin, New Mexico.(thicknesses from Jacques Robertson oral comunication, 1983)

Page 10: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Framework constituents, in order of decreasing abundance, are quartz, feldspar, rock fragments and miscellaneous accessory mineral grains. Each of these framework constituents has been further divided. Quartz is divided into monocrystalline, polycrystalline, metamorphic, and cryptocrystal1ine varieties. Monocrystal line quartz is any single-crystal quartz grain. Polycrystalline quartz is any multiple-crystal quartz grain that is not clearly metamorphic or cryptocrystalline. Metamorphic quartz is any multiple-crystal quartz grain with either schistose or stretched metamorphic texture. Cryptocrystal1ine quartz is also multiple crystal and consists of both chert and chalcedony.

Feldspar is divided into potassium and plagioclase varieties. Potassium feldspar types observed are microcline, orthoclase, sanadine, and perthite. Due to alteration and the lack of properly oriented grains no attempt was made to classify plagioclase feldspar.

Rock fragment interpretation in sediments is difficult and fragments can be easily misidentified. Identification of rock fragments in the core samples is only preliminary and based largely on textural characteristics. Rock fragments have been divided into the following varieties: volcanic igneous, plutonic igneous, metamorphic, sedimentary, unknown altered, and deformed. No attempt has been made to classify the igneous rock fragments but preliminary observations do suggest an intermediate to acidic composition. Metamorphicr*ock fragments observed are largely schistose but nothing definite can be said about their metamorphic grade. Sedimentary rock fragments are more easily recognizable with silicified sandstone, lime mudstone, siltstone, and claystone fragments identified. Unknown rock fragments are considered to be any grain that is identifiable as a rock fragment but due to alteration its exact origin is questionable. Deformed rock fragments are any grain that is identifiable as a rock fragment but has been deformed to some degree forming what Dickinson (1970) refers to as pseudomatrix. Even though these fragments are often deformed almost beyond recognition, they still should be considered part of the original framework.

Accessory minerals identified in order of decreasing abundance are biotite, muscovite, zircon, tourmaline, apatite, iron-titanium oxides, sphene, and garnet. Refer to Hansley (1983) for a detailed discussion of the nonopaque, detrital heavy mineralogy of the core samples.

Nonframework constituents are composed of cement, matrix, and miscellaneous alteration products. According to this study, cement is considered to be any chemically precipitated mineral material. The following cements have been identified in the core samples: silica in the form of quartz overgrowths, carbonate in the form of both calcite and ferroan carbonate, kaolinite, barite, anhydrite, potassium feldspar in the form of authigenic overgrowths, pyrite, ferric oxide and oxyhydroxide. Also a small amount of cement of unknown types is present.

Matrix material observed consists of undifferentiated mixtures of one or more of the following: detrital and authigenic clay, silt, lime mud, and organic material. No attempt was made to futher divide matrix material.

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No detailed work on alteration products was done for this study. Alteration products that have been identified are sericite from altering plagioclase feldspar, ferric oxide and oxyhydroxides from altering iron- titanium oxides and lithic fragments, and leucoxene from altering iron- titanium oxides.

Even though porosity values obtained by point counting can be imprecise (Hal ley, 1978), no other method for porosity estimation on the core samples was easily available. Thus, porosity values obtained from this study should only be considered as rough approximations. Most of the porosity observed is primary interparticle but some secondary porosity is also present.

Figures 4, 5, and 6 are computer-generated quartz-feldspar-1ithic fragment ternary classification diagrams (Folk, 1974) of all Brushy Basin, Westwater Canyon, and Recapture samples, respectively, for the seven holes. Major framework constituents, excluding accessory minerals, were recalculated to 100 percent and allotted to the following poles:

Q-pole: Monocrystalline quartz, polycrystalline quartz and metamorphic quartz.

F-pole: Plagioclase feldspar, potassium feldspar plus gneissic and granitic lithic fragments.

L-pole: All other lithic fragments including cryptocrystalline quartz.

Relatively few Brushy Basin samples were examined. Most are subarkoses or lithic arkoses; a few are arkoses. The Westwater Canyon samples show the greatest diversity. Most samples are classified as arkoses or lithic arkoses; a few samples are classified as subarkoses or feldspathic litharenites. Samples of the Recapture show the closest grouping. Most are subarkoses; a few samples are classified as arkoses, lithic arkoses, or feldspathic 1itharenites.

Composition plots (figs. 4-6) suggest some compositional differences between the three Morrison members. The reasons for these differences are not yet entirely understood and more work needs to be done on this aspect of the petrology.

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Page 14: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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REFERENCES CITED

Craig, L. C., Holmes, C. N., Cadigan, R. A., Freeman, V. L., Mullens, T. E., and Weir, G. W., 1955, Stratigraphy of the Morrison and related formations, Colorado Plateau Region A preliminary report: U.S. Geological Survey Bulletin 1009-E, p. 125-168.

Dickinson, W. R., 1970, Interpreting detrital modes of graywacke and arkose: Journal of Sedimentary Petrology, v. 40, no. 2, p. 695-707.

Folk, R. L., 1974, Petrology of sedimentary rocks, Hemphill Publishing Company, Austin, Texas, 182 p.

Freeman, V. L., and Hilpert, L. S., 1956, Stratigraphy of the MorrisonFormation in part of northwestern New Mexico: U.S. Geological Survey Bulletin 1030-J, p. 309-319.

Hal ley, R. B., 1978, Estimating pore and cement volumes in thin section: Journal of Sedimentary Petrology, v. 48, no. 2, p. 642-650.

Hansley, P. L., 1983, The nonopaque, detrital heavy mineralogy of the Morrison Formation near Crownpoint, San Juan Basin, New Mexico: U.S. Geological Survey Open-File Report 83-191, 34 p.

Harshbarger, J. W., Repenning, C. A., and Irwin, J. H., 1957, Stratigraphy of the uppermost Triassic and Jurassic rocks of the Navajo country: U.S. Geological Survey Professional Paper 291, 74 p.

Huffman, A. C., Jr., Kirk, A. R., Hammond, D. J., Zech, R. S., Franczyk, K. J., Steele-Mallory, B. A., Gundersen, L. C., Sikkink, P. G. L., Condon, S. M., Mruk, D. S., Moore, M., Indelicate, L. A., and Hildebrandt, P., 1981a, Lithologic descriptions, core and cutting samples, Mariano Lake- Lake Valley Drilling Project, McKinley County, New Mexico, Hole Number 3: U.S. Geological Survey Open-File Report 81-1202, 31 p.

Huffman, A. C., Jr., Santos, E. S., Hammond, D. J., Kirk, A. R., Aubrey, W. M., Mruk, D. S., Sikkink, P. G. L., Condon, S. M., Dubiel, R. F., Moore, M., Yost, C., Armstrong, D., Hildebrandt, P., and Indelicate, L. A., 1981b, Lithologic descriptions, core and cutting samples, Mariano Lake- Lake Valley Drilling Project, McKinley County, New Mexico, Holes 4 and 4A: U.S. Geological Survey Open-File Report 81-1203, 37 p.

Kirk, A. R., Huffman, A. C., Jr., Hammond, D. J., Robinson, K., Larson, J., Armstrong, D., and Hildebrandt, P., 1981a, Lithologic descriptions, core and cutting samples, Mariano Lake-Lake Valley Drilling Project, McKinley County, New Mexico, Hole Number 1: U.S. Geological Survey Open-File Report 81-1207, 19 p.

Kirk, A. R., Gundersen, L. C., Hammond, D. J., Sikkink, P. G. L., Condon, S. M., Aubrey, W. M., Mruk, D. S., Huffman, A. C., Jr., Moore, M., Dubiel, R. F., Indelicate, L. A., Hildebrandt, P., and Day, H., 1981b, Lithologic descriptions, core and cutting samples, Mariano Lake-Lake Valley Drilling Project, McKinley County, New Mexico, Hole Number 6: U.S. Geological Survey Open-File Report 81-1204, 40 p.

Kirk, A. R., Aubrey, W. M., Huffman, A. C., Jr., Gundersen, L. C., Schurman, R. L., Thoen, W., Francis, D., Green, M. W., Indelicate, L. A., and Franczyk, K. J., 1981c, Lithologic descriptions, core and cutting samples, Mariano Lake-Lake Valley Drilling Project, McKinley County, New Mexico, Hole Number 7: U.S. Geological Survey Open-File Report 81-1206, 30 p.

12

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Zech, R. S., Hammond, D. J., Kirk, A. R., Huffman, A. C., Jr., Aubrey, W. M., Schurman, R. L., Indelicate, L. A., and Hildebrandt, P., 1981a, Lithologic descriptions, core and cutting samples, Mariano Lake-Lake Valley Drilling Project, McKinley County, New Mexico, Hole Number 5: U.S. Geological Survey Open-File Report 81-1209, 27 p.

Zech, R. S., Kirk, A. R., Huffman, A. C., Jr., Hansley, P. L., Day, H., Condon, S. M., Robinson, K., and Franczyk, K. J., 1981b, Lithologic descriptions, core and cutting samples, Mariano Lake-Lake Valley Drilling Project, McKinley County, New Mexico, Hole Number 7A: U.S. Geological Survey Open-File Report 81-1210, 29 p.

13

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APPENDIX IExplanation of computer-generated tables 2-8. Column no.

1. Sample depth in feet2. Mean grain size (phi units)3. Sorting index (phi standard deviation)4. Total quartz (columns 5-8)5. Monocrystalline quartz6. Polycrystalline quartz7. Cryptocrystalline quartz8. Metamorphic quartz9. Total feldspar (columns 10-11)

10. Plagioclase feldspar11. Potassium feldspar12. Sample depth in feet13. Total rock fragments (columns 14-18)14. Volcanic igneous15. Plutonic igneous16. Metamorphic17. Sedimentary18. Unknown altered and deformed19. Accessory minerals20. Total framework (columns 4, 9, 13 and 19)21. Sample depth in feet22. Matrix23. Total cement (columns 24-31)24. Silica25. Carbonate26. Kaolinite27. Barite28. Anhydrite29. Authigenic potassium feldspar30. Pyrite31. Other cements32. Sample depth in feet33. Total alteration products34. Total nonframework (columns 22, 23, 33)35. Porosity

NOTE: 1) All compositional values are volume percentages.2J 0.00 = not observed.3) Any value in hundredths place represents trace quantity.4) * = sample taken from zone with uranium mineralization.

14

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77

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726.0

762.0

sao.

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C866.

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89

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n1

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PH

IM

EA

N

3.1

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52.0

41.3

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81.4

"

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81.9

6

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01.9

32.1

22.2

32.1

21.7

42.7

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31.8

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82.3

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9

SO

RT

ING

IND

EX

(PH

I) 0.6

10.8

10.6

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1.0

00.5

50.9

80.5

80.6

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70.6

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8

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60.6

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70.6

80.8

00.8

00.7

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TO

TA

LQ

UA

RT

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NO

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AL

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0

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03.7

01.0

01.0

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0.0

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0.7

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ME

TA

MO

RP

HIC

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AL

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SE

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AS

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FE

LD

SP

AR

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112.3

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0

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LD

SP

AR

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Page 19: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

2.

(co

nt.

)

SA

MP

LE

DE

PT

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EE

T)

54

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0559.

05

60

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10

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TA

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13.3

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23.6

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0

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11.0

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no

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0

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MP

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0

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0

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00.0

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KN

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&

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CE

SS

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1

TO

TA

LF

RA

ME

WO

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33.7

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Page 20: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

2.

(co

nt.

)

SA

MP

LE

D

EP

TH

(F

FE

T)

MA

TR

IXT

OT

AL

CE

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NT

SS

ILIC

AC

AR

BO

NA

TE

K

AO

LIN

ITE

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HY

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IC

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TA

SS

IUM

F

ELD

SP

AR

PY

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TE

OT

HE

R

CE

ME

NT

S

S-l

SA

MP

LE

S

5*1.0

55

9.0

560.0

579.0

594.0

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636.0

6

67

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677.0

726.0

782.0

810.0

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RA

6.

08

61

.0866.

0fiB

l .

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91.0

91R

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30

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98

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n

64

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0

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0

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0

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01

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01

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02

. on

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0

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0

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0

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01

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0

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1

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0

0.0

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0

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00

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0

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0

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Page 21: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

2.

(co

nt.

)

oo

SA

MP

LE

T

OT

AL

DE

PT

H

AL

TE

RA

TIO

N

(FE

ET

) P

RO

DU

CT

S

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55

9.0

56

0.0

57

9.0

591.0

615.0

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66

7.0

677.0

72

6.0

782.0

810.0

820.0

846.0

861.

0P

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91

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50

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0

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00.3

00.3

00.6

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0

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TA

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AM

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Page 22: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

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mp

ute

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tab

le o

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LQ

UA

RTZ

S-3

34

.00

17

.00

29

.10

2

2.7

04

3.4

03

3.7

03

5.0

04

4.4

0

40

.90

36

.00

4

4.3

04

3.7

0

47

.10

40

.00

35

.20

39

.90

50

.10

38

.60

33

.80

39

.50

35

.70

37

.10

,5

1.1

04

7.5

0*?.7

0 .

51

.40

41

.40

4

0.3

04

3.1

05

6.6

06

2.4

05

5.6

05

3.4

0

POL

YX

TA

LQ

UA

RTZ

SAM

PLE

S 2.7

00

.30

1.3

0

1.3

02

.30

1.7

03

.70

4.3

0

2.0

03

.30

4

.00

2.3

0

4.0

01

.70

4.0

03

.70

2.7

04

.00

3.3

03

.70

1.0

02

.30

2.0

03

.00

3.0

02

.30

1.7

0

3.3

04

.30

2

.00

0.3

00

.70

2.3

0

CR

YPT

OX

TA

LQ

UA

RT

Z

2.3

00

.01

0.3

0

0.7

00

.01

0.0

00

.30

0.0

1

0.0

10

.00

0

.01

0.3

0

0.0

10

.30

0 .3

00.0

10

.00

0.3

00

.01

0 .3

00

.30

0.7

00.0

11

.30

0.0

10

.00

0.0

0

0.7

00

.01

0

.01

0.0

10

.30

0.0

1

ME

TA

MO

RPH

IC

TO

TA

L

PL

AG

IOC

LA

SE

PO

TA

SSIU

MQ

UA

RTZ

2.7

00

.30

2.3

0

1.7

04

.70

1.0

01

.00

3.3

0

5.0

03

.70

5

.30

7.3

0

4.0

0*.

oo3

.00

4.3

03

.00

6.7

02

.70

0.7

01

.00

1.7

02

.00

2.0

02

.70

1 .0

03

.00

2

.00

2.3

0

0.7

01

.00

2.3

02

.00

FEL

DSP

AR

12

.00

11

.31

12

.30

7

.60

12

.60

1 6

.30

19.6

012.3

0

10

.00

16

.31

1

1 .0

01

1.6

0

12

.00

11.0

01

4.6

01

6.0

01

2.3

01

3.7

016.4

01

9.3

07.3

012.6

07

.00

12

.60

i ?;7

013.7

09.7

0

1 2

.70

12 .

01

1 1

.30

4 .3

06.6

04

.70

5.3

05

.00

1.7

0

1.3

02

.30

3.3

07

.00

2.3

0

3.0

03

.30

2

.30

3.3

0

1.7

02

.00

2.0

05

.00

3.3

04

.70

3.0

07

.00

1.3

00

.30

2.0

02

.30

4.0

02

.00

2.0

0

3.7

05

.30

2

.00

1.0

01

.00

0.0

0

FEL

DSP

AR

6.7

06

.31

10

.60

6

.30

10

.30

13.0

01

2.6

01

0.0

0

7.0

01

3.0

1

8.7

08

.30

1

0.3

09

.00

12

.60

11

.00

9.0

09

.00

13

.40

12

.30

6.0

01

2.3

05

.00

10

.30

11

.70

11

.70

7.7

0

9.0

06

.71

9

.30

3.3

05

.60

4.7

0

FO

RM

AT

ION

ME

MB

ER

BR

US

HY

BA

SIN

ME

MB

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ST

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RC

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Page 23: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le 3

. (c

on

t.)

SA

MP

LE

DE

PT

H(F

fET

)

16

45

. u

167^.

01681.C

1714.0

17

24

.01

73

8.

P1783.

C1

7.9

8 .

0 1

808.

01833.

n 1855.

0 1

863.0

1861.0

18

66

.ci

1668.0

18

71

.0 1

662.0

1892.

I1

90

5.

C1916.0

1939.=

1943.

01957.

01

9 7

R .

020J05.0

2016.0

2046.0

2059.0

2

07

4.0

2101.0

2

11

4.0

2155.0

21

69

.0

TO

TA

LR

OC

K

FR

AG

S

6.0

1

1.3

05.0

1

3.7

07.0

228.4

010.7

06.0

0

4.4

012.1

0

12

.40

13

.30

6.9

112.6

01

8.0

01

4.0

010.7

09.0

01

5.7

012.0

02.0

04.7

07.0

05.6

112.3

03.0

15.3

31

1.9

1

4.3

14.4

1

2.7

03.3

04.0

2

VO

LC

AN

ICIG

NE

OU

S

5.0

0

l.|3

04. '

01

gftP

5.7

13.0

05.0

02.3

0

1.0

05.0

0

4.7

05.0

04.0

13.f,0

6.7

06.0

04.0

02.3

06.0

06.7

01.3

01.6

03.3

03.0

06.3

02.3

13.7

18.6

0

2.3

13.4

0

2.0

02.0

03

. 0

0

PL

UT

ON

ICIG

NE

OU

S

0.7

0

0.0

00.7

0

1,0

00.3

00.7

01.7

02.0

0

1.7

02.7

02.3

03.3

01.3

05.0

05.3

01.7

04.7

03.0

04

.70

2.3

00.7

01

.70

2.3

00.0

10.7

00.7

00.3

03.3

0

1.0

01

.00

0.7

00.3

00

.01

ME

TA

- 5

MO

RP

HIC S

-3

0.3

0o.

bo0.0

0

Q.5

00.0

10.0

02.0

00.7

0

1.0

00.0

0

1.7

02.3

00.0

01.0

00.3

00.3

00.7

02.7

01.0

00.7

00.0

00.7

00.0

00.0

00.3

00.0

00.0

10.0

1

0.0

00.0

0

0.0

00.0

0O

.OQ

>E

DIM

EN

TA

RY

SA

MP

LE

S 0.0

1

0.0

00.0

0

0.0

00.0

01

9.0

00.3

01

.00

0.7

00.7

0

0.7

00.7

00.3

01

.00

3.7

01.3

00.3

00.7

04.0

01.0

00.0

00.7

00.7

02.3

01.0

00.0

00.0

10.0

0

0.3

00.0

1

0.0

00.7

00.0

1

UN

KN

OW

NA

LT

t

DE

FM

Q.O

O

0 .0

00.3

0

n.a

o1.0

05.7

01.7

00.0

0

0.0

03.7

0

3.0

02.0

01.3

02.0

02.0

04.7

01

.00

0.3

00.0

01.3

00.0

0O

.OQ

0.7

00.3

04.0

00.0

01.3

00.0

0

0.7

00.0

0

Q.O

O0.3

01.0

0

AC

CE

SS

OR

YM

INE

RA

LS

0.0

2

0.0

10.0

2n.

m0.0

20.0

10.0

10.0

1

0 .0

10.0

1

2.3

10.3

10.0

20.0

20.0

20.3

10.0

20.0

20.0

10.0

10.0

10.6

00.0

00.7

10.0

21.0

00.0

10.0

2

0.0

20.0

2

0.0

10.0

10.0

2

TO

TA

LF

RA

ME

ltOR

K >

59.7

2

30

.22

50

.32

^7.7

17

0.0

38

1.1

170.3

170.3

2

62.3

27

1.4

1

79

.32

78.8

17

4.0

369.6

27

5.1

278.2

278 .

82

72

.32

71

.92

75.5

14

7.3

159.7

06°.

1172.7

17

6.t

t37

2.4

061.1

17

0.9

2

66.0

375 .

03

70.7

26

8.8

166.4

3

FO

RM

AT

ION

ME

MB

ER

BR

US

HY

BA

SIN

ME

MB

ER

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

RE

CA

PT

UR

EM

EM

BE

R

Page 24: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

3.

(co

nt.

)

SAM

PLF

DE

PTH

(F

EE

T)

MA

TPI

XTO

TAL

CE

ME

NT

SS

ILIC

AC

AR

BO

NA

TE

KA

OL

IMT

EB

AR

ITE

A

NH

YD

RIT

E

AU

TH

ICF

MC

P

OT

AS

SIU

M

FEL

DSP

AR

PYR

ITE

OTH

ER

CE

ME

NT

SF

OR

MA

TIO

N

ME

MB

ER

S-3

SA

MPL

ES

16

45

. C

1679.0

16

81

.0

17

14

. 0

1724.

01

73

8.0

1783.0

1 7.

9 8

. 0

18

08

.1?

1833.

n1855.C

1863.

0 1864.

C1

86

6.5

1

86

8.

01874.

01

88

2.0

18

92

.019

JD5.

01

91

6.0

19

39

. 5

19

43

. 0

19

57

.01

97

8.

C2005.0

20

16

.02046.0

20

59

.0

2074.0

21

01

.02

11

4.0

2155.0

21

69

.0

26.0

067.3

039.0

0

57.3

02

.00

9.3

00

.30

0.0

01

2.7

00

.30

1.3

02

.30

?.4

01

.70

1

.30

3.0

01

.00

1.7

01

.00

2.7

049.2

053.3

01

.00

18.0

03

.30

30.7

00

.30

0.7

0

2.0

07

.00

0.0

04

.30

2.3

0

12

.60

0.0

11

0.4

8

3.6

00.0

12

.30

12

.00

3.3

02

.00

8.0

04

.70

0.6

0

3.0

05

.00

3

.60

1.4

05

.10

10

.70

5.7

02

.10

0.6

02

.00

9.3

00

.30

0.3

01.3

00

.30

0.0

1

3.7

01 2

.30

22

.00

9.6

02

.60

0.0

00

.00

0.0

1

0.0

00

.00

0.0

00

.01

0.0

00

.01

0.0

10

.70

0.0

1

0.0

00

.00

0

.00

0.0

00

.00

0.0

10

.00

0.0

00

.00

0.0

00

.01

0.0

00

.01

0.0

00

.01

0.0

1

0.0

10

.00

0.0

00

.00

0.0

0

10

.30

0.0

09

.70

0.0

00

.00

0.0

0B

.OO

0.0

00

.00

3.0

00

.00

0.0

1

0.0

02.7

0

0.3

00

.00

0.7

06

.30

2.7

00

.70

0.0

00.0

00

.70

0.0

00.0

01.3

00

.00

0.0

0

0.7

01

2.3

02

2.0

09

.30

2.3

0

2.0

00

.00

0.7

0

0.3

00

.00

2.3

01

.30

1.3

01

.70

3.7

02

.30

0.3

0

0.0

01

.00

1.0

00

.70

1.7

00

.70

1.3

00

.70

0.3

01

.30

3.0

00

.00

0.0

00

.00

0.3

00

.01

0

.30

0.0

00

.01

0.3

00

.30

0.0

10.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

0

0.0

00

.00

0

.00

0 .0

00.0

00

.00

0.0

00

.00

0 .0

00

.00

0.0

00

.00

0.0

00

.01

0 .0

00

.00

0

.00

0.0

10

.01

0.0

10

.00

0.0

00

.00

0.0

0

0.0

00

.00

0.0

00

.00

0 .0

00

.00

0.0

00

.00

0.0

0

0.0

00

.00

0

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

0

0.0

00

.00

0.0

10

.00

0.0

0

0.3

00

.00

0.0

0

0.0

00

.00

0.0

02

.70

2.0

00

.30

1.0

01

.70

0.3

0

2.0

01

.00

2.3

00

.70

?.7

03

.70

1.7

00.7

00

.30

0.7

05

.30

0.3

00

.30

0.0

00

.01

0.0

1

2.7

00

.00

0.0

00.0

00

.01

0.0

10

.01

0.0

1

3.3

00

.01

0.0

10

.01

0.0

10.0

10

.30

0.0

10.0

1

1.0

00

.30

0

.01

0.0

00

.01

0.0

00

.01

0.0

10

.00

0.0

00

.30

0.0

00

.00

0.0

00

.00

0.0

1

0.0

00

.00

0.0

10

.01

0.0

1

0.0

00

.00

0.0

0

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

0

0.0

00

.00

0

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

O.G

O0

.00

0.0

00

.00

0.0

0

0.0

00

.00

0.0

00

.00

0.0

0

BR

US

HY

BA

SIN

ME

MB

ER

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

RE

CA

PT

UR

EM

EM

BE

R

Page 25: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le 3.

(co

nt.

)

ro

ro

SA

MP

LE

DE

PT

H

(FF

ET

)

1645.

01679.0

16

81

.0

17

14

.01

72

1.0

1738.0

1783.0

1 7.

9 8

. n

1808.0

1833.

n1865.

01863.0

1861.

0 1

86

6.

"i1

86

8.0

1871.0

1882.0

18

92

.01

9.0

5 .

C191f .0

19

39

. *

1943.0

1957.

01

97

8.

C2

0.0

5.0

20

16

.02

0A

6.0

2059.0

2074.0

21

X1

1.0

2

11

4.0

2155.0

21

69

.0

TO

TA

LA

LT

ER

AT

I O

N

PR

OD

UC

TS

0.0

11

.20

0.0

1

1.0

00.3

01.0

00.7

02.4

05.0

02.3

02.0

03.0

01.9

0

5.0

03.0

0

0.7

02.4

01.6

01.4

04.0

00.6

02.0

02.3

01.0

00.3

01.3

00.3

00.7

0

2.0

00.0

1

0.3

00

.0 1

0.0

0

TO

TA

LN

ON

-

FR A

ME

UO

RK

38.6

16

8.5

149.4

1

61.9

02.3

112.6

01

3.0

05.7

01

9.7

010.6

08.0

05.9

07.3

0

11.7

07.9

0

5.1

08.5

01

4.0

0fl.1

08.8

050.4

037.3

012.6

01

9.3

03.9

023.3

00.9

01.4

1

7.7

019.3

1

22.3

013.9

14.9

0

PO

RO

SIT

Y

1.7

01.3

00.3

0

0.7

027.7

06.3

016.7

024.0

018.0

016.7

017.0

015.3

018.7

0

18.7

017.0

0

16.7

012.7

013.7

019.7

015.7

02.3

03.0

018.3

0R

.OO

19.7

04.3

038.0

027.7

0

26

.30

5.7

0

7.0

017.3

02

8.7

0

FO

RM

AT

ION

ME

MB

ER

S-3

S

AM

PLE

S

BR

US

HY

BA

SIN

ME

MB

ER

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

RE

CA

PT

UR

EM

EM

BE

R

Page 26: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

4.

Co

mp

ute

r-g

en

era

ted

ta

ble

of

sele

cte

d te

xtu

ral

and

com

po

siti

on

al

data

fr

om t

he

Up

per

Ju

rass

ic

Mo

rris

on

F

orm

atio

n,h

ole

S

-4.M

ari

an

o L

ak

e-L

ak

e V

alle

y dr

illin

g p

roje

ct,

McK

inle

y C

ou

nty

.New

M

exic

o.

CO

SAM

PLE:

DE

PTH

(F

EE

T)

PH

IH

f AM

SOR

TIN

G

IND

EX

(P

HI)

TO

TA

L

MO

NO

XTA

L PO

LY

XT

AL

C

RY

PTO

XT

AL

M

ET

AM

OPP

HIC

T

OT

AL

P

LA

GIO

CL

AS

E

PO

TA

SS

IUM

Q

UA

RTZ

Q

UA

RT

Z

QU

AR

TZ

Q

UA

RT

Z

QU

AR

TZ

FE

LD

SPA

R

FEL

DSP

AR

S-4

SA

MPL

ES

17

79

. C

1 Pf

l 7 .

01

87

8.0

1

90

0.

0 1

90

9.

n 1

91

7.

n 1

92

8.

P 1

93

3.0

1

939.0

1964

. n1

97

2.

n 1981.0

199

P.

C 20D

6.0

20

27

.02030.0

2041 .

0205?.

02

07

1.0

20

87

.02

09

9.0

2123.0

21

37

.02

15

9.0

2176.0

21

86

. n

2201

. n2211.0

22

32

.0

2239.0

22*9.0

2

26

5.0

2280.0

2293.0

23D

B.O

2.4

8

3.3

71.5

?1

.50

1.0

00

.92

1.5

^0

.98

1.4

70

.33

1.7

3

0.8

71

.2"

2.2

11

.45

1.9

11

.67

1.7

01

.84

1.2

82.

IB1

.91

2.3

00

.93

2.2

90

.51

1.7

52

.38

2.2

0

2.3

72

.93

2

.28

2.3

52

.80

2.0

5

0.7

6

O.P

O1

.01

0.6

90

.76

1.0

5O

.f6

0.9

70

.66

1.1

20

. 68

0

.88

0.

R6

0.7

10

.67

0.7

10

.72

0.6

00

.79

0.9

00

.73

0.7

20

.68

0.8

90

.60

1.7

40

.96

0.5

90

.69

0

.69

0.5

3

0.6

60

.70

0.9

80

.70

?8

.71

3

2.4

14

1.8

05

3.3

14

2.7

14

5.5

15

8.2

05C

.70

46

.80

34

.30

36

.91

4

6.7

13

1.7

155.0

04

2.0

05

5.9

04

6.2

16

0.5

05

1.3

14

1.8

05

2.9

06

0.7

05

5.1

04

0.1

06

1.1

12

9.8

15

7.4

157.2

05

2.3

0

56

.50

55

.91

4

8.8

16

0.7

05

9.0

159.4

0

27

.00

3

1.1

03-6

.10

48

.00

37

.40

36

.90

52.6

04

6.1

04

2.2

02

4.0

03

3.9

0

40

.70

27.7

05

3.4

03

6.3

05

0.2

04

1.8

05

2.9

04

5.0

03

7.2

04

6.2

05

2.4

04

9.5

03

4.5

05

3.8

02

4.2

053.7

053.2

04

8.0

0

48.2

051.2

0

43

.10

55

.70

56.0

05

4.1

0

0.7

0

1.0

02

.00

2.3

02

.30

4.3

03

.00

2.3

03

.00

4.3

01

.00

2

.70

3.0

0

1.0

03

.70

2.7

01

.70

2.3

03

.00

3.3

03

.70

5.0

02

.30

1.3

03

.00

2.3

01

.00

1.3

01

.30

1

.30

1.7

0

2.0

01

.70

1.0

01

.00

0.0

1

0.0

10

.70

0.0

10

.01

0.0

10

.30

0.0

00

.30

0.3

00

.01

0.0

10

.01

0

.30

0.3

00

.00

0.0

10

.30

0.0

10

.30

0.3

00

.30

0 .3

00

.30

0.0

10

.01

0.0

10

.00

0.0

0

0.3

00

.01

0

.01

0.3

00

.01

1.0

0

1.0

0

0.3

03

.00

3.0

03

.00

4.3

02

.30

2.3

01

.30

5.7

02

.00

3

.30

1 .0

00

.30

1.7

03

.00

2.7

05

.00

3.3

01

.00

2.7

03

.00

3.0

04

.00

4 .3

03

.30

2.7

02

.70

3.0

0

6.7

03

.00

3

.70

3.0

02

.00

3.3

0

7.0

0

8.7

06

.76

9.3

012.0

11

1 .6

01

0.6

01

4.4

014

.30

20

.00

17

.70

1

P.

002

0.0

1

1 4.7

01

8.3

01

5.4

011.5

01

0 .6

01

3.4

01

9.3

01

2.4

01

7.4

014.7

021

.30

13

.90

11

.70

16.0

11

0.0

011.7

0

1 0

.40

11

.00

12.3

17

.30

9.3

06.3

0

1.3

0

0.7

01

.00

2.0

01

.30

1.3

01

.30

3.7

02

.30

2.3

06

.70

1

.30

6.3

0

4.0

04

.70

1.7

00

.50

2.3

03

.70

5.3

03

.70

3.7

02

.70

3.3

04

.30

2.0

05

.30

3.7

02

.00

1

.70

2.7

0

1.3

02

.00

0.7

00

.30

5.7

0

8.0

05

.10

7.3

01

0.7

11

0.3

09

.30

10

.70

12

.00

17

.70

11

.00

1

6.7

01

3.7

1

10.7

01

3.6

01

3.7

01

1.0

0a.

30

9.7

01

4.0

08

.70

13

.70

12

.00

18

.00

9.6

09

.70

10

.71

6.3

09

.70

8

.70

8.3

0

11.0

15

.30

8.6

06

.00

FO

RM

AT

ION

M

EM

BE

R

BR

US

HY

BA

SIN

ME

MB

ER

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

RE

CA

PT

UR

EM

EM

BE

R

Page 27: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

4.

(co

nt.

)

ro

SA

MP

LE

T

OT

AL

VO

LC

AN

IC

PL

UT

ON

IC

DE

PT

H

RO

CK

F

RA

GS

IG

NE

OU

S

IGN

EO

US

(F

EE

T)

ME

TA

- S

ED

IME

NT

AR

Y

UN

KN

OW

N

AC

CE

SS

OR

Y

TO

TA

L

MO

RP

HIC

A

LT

&

DE

FM

M

INE

RA

LS

F

RA

ME

UO

RK

S-4

S

AM

PL

ES

1779.0

1

1 S

07

. 0

1878.0

1900.

0

19.0

9.0

1917.0

1928.0

19

33

.0

19

39

. P

19

72

. 0

1981.0

1 9.

9 8

. 0

20

06

.02027.

C2

03

0.0

2041 .

02055.0

2071.0

2087.

n2

09

9.0

2123.0

2137.0

2159.0

2176.0

2186.0

22

04

.02214.0

2?32.n

2239.0

2249.0

22

65

.02

28

0.0

2293.0

2308.0

1.3

2

1.3

26.6

19

.00

17.3

012.6

05.3

04

.6 1

9.0

119.7

08.8

011

.30

30

.71

7.3

11

6.7

14.7

119.3

05.0

19.1

011.2

07.1

24.7

21

0.6

01

7.3

13.3

03

5.7

112.0

02.3

15.3

06.2

0

2.6

01

1.6

11.3

11.7

23.0

1

1.3

1

1.3

13.3

02.6

04.0

04.6

03.0

01

.60

5.7

04.7

0

6.4

05.0

0

5.0

12.3

09.4

02.0

05.3

03.0

06.0

04.6

04.7

14.0

02.3

01

0.0

03

. 00

2.0

05.0

02.0

11.3

01.6

0

1.6

04.6

01.0

00

.71

3.0

0

0.0

0

0.0

03.3

02.0

05.3

05.0

01.7

01

.00

1.3

012.0

0

0.7

04

.00

4.0

01

.00

3.7

01.0

04.7

00.7

01

.70

3.3

00.7

00.0

01.0

04

.30

0.3

01.7

01.0

00.3

00.7

00.3

0

0.7

00.0

00.0

11

.00

0.0

1

0.0

0

0.0

00.0

00.7

00.7

01.0

00.0

00.7

00.0

00.7

0

0,7

00.3

0

0.0

00.0

00.3

00.0

00.3

00.0

00.7

00.3

00.0

10.0

10.0

00.7

00.0

00.0

00.7

00.0

00.0

00.0

0

0.0

00.0

00.0

00.0

00.0

0

0.0

1

0.0

10.0

13.0

04.3

00.3

00.3

00.0

10.0

11.3

0

0.3

00.3

0

4.0

00.0

10.0

10

.01

0.3

00.0

10.0

01.0

00.0

00.0

10.3

00.0

10.0

00.0

10.3

00.0

00.3

00.3

0

0.0

00.0

10.0

00.0

10.0

0

0.0

0

0.0

00.0

00.7

03.3

01.7

00.3

01.3

02.0

01

.00

0.7

01.7

0

17

.70

4 .0

03.3

01

.70

8.7

01.3

00.7

02.0

01.7

00.7

07.0

02.3

00.0

032.0

05.0

00.0

03.0

04.0

0

0.3

07.0

00.3

00.0

00.0

0

0.0

2

0.0

20.0

00.0

10.0

10.0

10.0

20.0

10.0

20.0

1

0.0

00.0

10

.02

0 .3

10.0

10.0

10.0

10.0

10.3

10.0

20.0

20.3

10.3

10.0

20.0

20.0

10.3

10.6

10.0

20.0

1

0.9

00.6

00.0

10.0

10.0

1

37.0

3

42

.43

55

.10

71 .

62

72.0

269.7

27

4.1

26

9.7

170.1

27

4.0

1

63

.41

76

.02

82.4

377.3

17

7.0

176.0

17

7.0

276.1

174 .

12

. 72.3

272.4

28

3.1

18

0.7

178.7

278.3

377.2

285.7

27

0.1

169.3

27

3.1

1

70.4

17

3.3

169.3

170.0

268.7

1

FO

RM

AT

ION

M

EM

BE

R

BR

US

HY

BA

SIN

ME

MB

ER

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

RE

CA

PT

UR

EM

EM

BE

R

Page 28: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le 4.

(co

nt.

)

PO

en

SA

MP

LE

D

EP

TH

(F

EE

T)

MA

TR

IXT

OT

AL

CE

ME

NT

SS

ILIC

AC

AR

BO

NA

TE

K

AO

LIN

ITE

BA

RIT

E

AN

HY

DR

ITE

A

UT

HIG

FN

IC

PO

TA

SS

IUM

F

ELD

Sf

AR

PY

K I

TE

OT

HE

R

CE

ME

NT

S

S-4

S

AM

PL

ES

1779.

L 1

8J0

7.

C1

87

8.0

19Q

O.

C

1=

509.

0 1

91

7.0

1928.

0 1933.0

1939.0

1964.

f!1972.0

1981.0

19

98

.P

20J06.0

i 2

02

7.0

2030.0

20

/tl

.0205^.0

2071.0

2087.0

2099.0

2123.0

2137.0

2159.0

2176.0

21

86

.02

20

4.0

2214.0

2232.0

2239.0

2249.0

2265.0

2280.0

2293.0

23

0S

.O

62

.70

5

7.3

03.0

00.7

04.0

02.0

01.3

02.0

0 1

.00

1.0

025.0

0

0.0

03.0

0

0.3

01

.30

0.3

00.0

00.0

01.3

0I.Q

O0.0

00.7

03.0

0I.

on

0.0

00.0

0*.7

00.0

00.7

0

1 .0

00.3

0

5.0

02.0

02

0.7

01.0

0

0.0

1

0.0

11

0.3

02.0

03.0

03.4

02.7

01

2.7

04.6

03.0

00.3

0

2.3

02.0

0

0.

30

3.3

0

1.7

00

.9Q

2.3

00.7

05.0

00.3

00.3

00.3

04.3

01.6

0IB

. 7

00.9

00.6

01.6

0

1 .6

01.3

0

1.3

011.0

00.3

00.6

0

0 .0

0

0.0

10

.01

0 .0

00.0

10.0

00.0

10.0

11

.00

0.0

10.3

0

0.0

10.0

1

0.0

10.0

0

0.0

10

.01

0.0

10.0

00.0

10.0

00.0

10.3

00

.01

0.0

10.0

10.0

10.0

10

.01

0.3

00.0

1

0.0

10

.01

0.0

10.3

0

0.0

1

0.0

10.0

00.0

00.0

00.0

00.0

01

1.3

00.0

00.0

00.0

0

0.0

00.0

0

0.0

00.0

1

0.0

00.0

00.0

00.0

00.3

00.0

00.0

10.0

13.7

01.0

01

8.7

00.3

00.3

00.3

0

0.0

11.0

0

0.3

0u

.no

0.0

10.3

0

0.0

0

0.0

0o.

no0.3

01.3

02.7

01.7

00.7

01.3

01.7

00.0

1

2.0

01

.30

0.0

02.3

0

0.0

10.3

01.0

00.0

02.7

00.3

00.0

10.0

10.3

00.0

00.0

00.3

00.0

11.0

0

0.0

10.3

0

0.0

10.0

00.3

00.0

0

'

0.0

0

0 .0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

0

0.0

00.0

0

0.0

00.0

0

0 .0

00.0

00.0

00

.00

0.0

00.0

00

.00

0.0

00.0

00.0

00.0

00

.00

0 .0

00.0

0

0 .0

00

.00

0.0

00.0

00.0

00.0

0

0.0

0

0.0

00.0

00.0

00.0

00

.00

0.0

00.0

00.0

00.0

00.0

0

0.0

00.0

0

0.0

00.0

0

0.0

00.0

00.0

00

.00

0.0

00.0

00.0

00.0

00.0

00

.00

0.0

00.0

00.0

00.0

0

0.0

00.0

0

0.0

00.0

10.0

00.0

0

0.0

0

0.0

00

.30

1.7

01.7

00.7

01

.00

0.7

02.3

01

.30

0.0

0

0 .3

00.7

0

0 .3

01

.00

1

.70

0.3

01.3

00

.70

1 .3

00.0

00.3

00.0

00.3

00.3

00.0

00.3

00.0

10.3

0

1 .3

00

.00

1

.00

0.0

00

.00

0.0

1

0.0

0

0.0

01

0.0

00.0

00.0

10.0

10.0

00.0

10.0

00.0

00.0

0

0.0

00.0

0

0.0

10.0

1

0.0

10.3

00.0

10.0

10.7

00.0

10.0

10.0

00.0

00.3

00.0

00.0

00.3

00.0

1

0.0

00.0

0

0.0

00.0

00.0

00.0

0

0.0

0

0.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

0

0.0

10.0

0

0.0

00.0

0

0.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

00.0

0

0.0

00.0

0

0.0

00.0

00.0

00

.00

FO

RM

AT

ION

M

EM

BE

R

BR

US

HY

BA

SIN

ME

MB

ER

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

RE

CA

PT

UR

EM

EM

BE

R

Page 29: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

4.

(co

nt.

)

ro

SA

MP

LE

DE

PT

H(F

EE

T)

1779.0

1

8JQ

7.0

1878.

0

1 «D

0 .

C

1 9j

Q 9

. 0

1

91

7.0

1928.0

1^33.0

1

93

9.0

1964.0

1972.

C 1

98

1 .

C1

99

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Page 31: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 32: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 33: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 34: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 35: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 36: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 37: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 38: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

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Page 39: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

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Page 40: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

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03.3

01

.70

3.0

02

.00

21 .

60

36

.00

4.7

0

1.6

03

. 00

3.0

01

4.6

03

.30

2.3

034.6

03

8.0

01

2.3

0

0.0

00

.00

0

.01

0.0

0

0.0

00

.01

0.0

00

.01

0.0

00

.00

0.3

00

.01

0.0

10

.01

0.0

10

.01

0.0

10

.01

0.0

00.0

10

.30

0.0

00

.01

0.0

00.0

10

.01

0.0

10

.00

0.0

10

.01

0

.01

0.0

1

0.0

10

.30

0.0

10

.01

0.0

00

.00

0.0

1

17

.00

1.3

0

25.0

021.0

0

1.0

00

.00

1.3

00.0

00

.00

0.0

00

.00

oioi

0.0

00

.70

6.0

00

.01

2.3

00

.01

8.3

02

2.7

00

.00

0.3

01

.70

2.3

00.0

12

.00

0.0

10

.00

30

.00

2.0

0

0.3

01.0

0

0.3

01

3.3

00

.01

1.3

03

4.3

03

6.7

09

.30

1.3

00

.01

0

.01

0.7

0

0.0

01

.70

1.3

00

.01

0.3

00

.01

0.0

10

.01

0.7

00

.30

0.0

10

.30

0.0

10

.30

0.0

10

.01

0.3

00

.00

0.0

10

.30

0.0

00

.00

0.0

00

.00

0.0

10

.01

0

.70

0.3

0

2.7

00

.30

3.3

01

.00

0.3

00

.00

0.0

0

0.0

00

.01

0

.00

0.0

0

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00.0

00

.00

o.po

0.0

10

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.01

0.0

15

.30

0.7

00

.00

0

.00

0.7

0

0.0

00

.01

0.0

00

.01

0.0

00

.00

3.0

0

0.0

00

.00

0

.01

0.0

1

0.0

00

.00

0.0

10

.00

0.0

10

.00

0.0

10

.00

0.0

10

.01

0.0

10

.00

0.0

00

.01

0.0

10

.01

0.0

00

.00

0.0

10

.00

0.0

10

.30

1.7

01

6.3

05

.30

1.0

0

0.0

10

.00

0

.00

0.0

10

.00

0.0

00

.01

1.3

00

.00

0.0

00

.00

0.0

10

.00

0

.00

0 .0

00

.70

0 .0

01

.00

0.0

00.0

10.3

00

.30

0 .0

01.0

00.0

01

.00

0 .7

00

.70

0.7

00

.01

0.3

00

.70

0.7

01

.70

0.7

00.3

00

.00

0 .0

11

.70

0

.30

1 .0

0

0.0

10

.70

0 .0

00

.00

0.0

00

.00

0.0

0

0.0

00

.30

0

.00

0.0

0

0.0

00

.00

0.0

10

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

O.Q

Q0

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.01

0.0

00

.01

0.0

00

.00

0.0

00

.00

0

.30

0.0

0

0.0

00

.00

0.0

10

.00

0.0

00

.01

0.0

0

Q.O

Q0

.00

0

.00

0.0

0

0.0

00

.00

0.0

00

.00

0.0

0O

.QQ

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

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.00

0.0

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.00

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00

.00

0.0

00

.00

0.0

00

.00

0.0

00

.00

0

.00

0.0

0

0.0

00

.00

0.0

00

.00

0.0

00

.00

0.0

0

BR

US

HY

BA

SIN

ME

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Page 41: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Tab

le

7.

(co

nt.

)

oo oo

SAM

PLE

TO

TAL

DE

PTH

A

LT

ER

AT

ION

(F

EE

T)

PRO

DU

CT

S

28

55

. C

2R

96

.0

29

07

. n

29

2R

.O

29

41

.02

97

8.0

2985.0

30

28

.03038.0

3050.0

3068.0

3091.0

31.0

6.0

3133.0

31

55

.0 3

17

9.0

31

90

.03

19

1.0

321?.

0 3

223.0

3

22

7.0

3229.0

3247.0

32

58

.0 3

259.0

32

63

.0 3

267.0

3271.0

3

28

2.0

32

96

.0

33

02

. c

3320.0

3336.0

3358.0

3374.0

3388.0

34

00

.C3

42

0.0

3438.0

8.0

00

.01

0

.01

1.3

0

0.0

11

.30

0.0

10

.60

3.4

00

.01

0.7

01

.30

1.0

01

.00

1.3

00

.70

3.0

01

.0 0

1.7

01

.00

0.3

03

.30

1.6

03

.30

1.3

00

.30

1 .0

00.3

0

0.7

01

.70

1

.30

0.3

0O

.ftO

1.0

00

.70

1.0

00

.01

0.0

10

.00

TOTA

L N

ON

- F9

AM

EU

OR

K

54.3

04

1.6

1

25

.01

23

.00

62.6

121.3

03

.31

18

.31

6.4

03

3.0

23

.70

7.9

05

.70

2.0

01

2.6

03

9.0

08

.60

R.3

01

3.4

027.7

021.6

01

9.6

01

0.3

0ft

. 60

5.7

05

.30

3.7

022.2

0

37

.00

10

.10

6

.60

6.6

05

.60

15

.90

4.7

06

.00

35

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38

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13

.60

PO

RO

SIT

Y

0.0

10

.00

0

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9.3

0

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011.0

024.7

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17.0

06

.30

13

.30

13

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17

.00

18

.00

10.7

00

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18.7

08

.30

13.7

06

.70

8.0

014.3

011.0

09

.00

19.0

017.0

01

2.3

00

.30

0

.00

14

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1

5.7

021.7

021.3

014.7

017.0

026.3

05

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3.3

09

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FO

RM

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ION

M

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SA

MPL

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Page 42: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

co

Tab

le

8.

Co

mp

ute

r-g

ener

ated

tab

le o

f sele

cte

d t

ex

tura

l an

d co

mp

osi

tio

nal

data

fr

om t

he

Up

per

Ju

rass

ic

Mo

rris

on

F

orm

atio

n,h

ole

S

-7a,M

ari

an

o

Lake-L

ake

Va

lle

y

dri

llin

g p

roje

ct,

M

cKin

ley

Co

un

ty,N

ew

Mex

ico

.

SA

MP

LE

D

EP

TH

(F

EE

T)

PH

IM

EA

NS

OR

TIN

G

IND

EX

(P

HI)

TO

TA

L

QU

AR

TZ

MO

NO

XT

AL

PO

LY

XT

AL

CR

YP

TO

XT

AL

ME

TA

MO

RP

HIC

Q

UA

RT

Z

QU

AR

TZ

Q

UA

RT

Z

QU

AR

TZ

TO

TA

L

PLA

GIO

CLA

SE

F

EL

DS

PA

RP

OT

AS

SIU

M

FE

LD

SP

AR

FO

RM

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ION

M

EM

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R

S-7

A

SA

MP

LE

S

29

49

.02^54 .

02

9,7

1 .

0

2

99

7.0

3030.

C 3042.0

3062.0

3

07

2.0

3108.0

31

10

.0 3

13

6.0

3140.0

3156 .

0 3

16

4.0

3

16

8.0

31

80

.03199.0

0.8

11.7

91.9

6

3.0

4 1.7

60.5

72.2

9

1.2

31

.63

0.9

61.2

41.2

41.8

81

.45

1.5

R2.0

31

.48

0.8

60.8

00.6

1

0.5

40.6

4

0.7

40.6

8

0.6

30.8

30.7

10.6

60.6

70.6

40.7

30.7

2n.f>

20.8

8

42

.40

49

.80

46.4

1

38

.80

48.7

1

38

.41

52

.71

46.7

154.1

14

8.7

14

4.3

15

0.1

05

8.8

059.5

05

9.0

15

7.0

05

3.6

1

36

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42

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41

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3

5.2

04

3.0

0

30.8

049.1

0

43

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50.1

043.1

039.7

044.8

053.8

056.1

052.4

052.7

048.9

0

1.3

03.7

02.0

0

1.3

03.0

0

4.3

01.3

0

0.7

01.3

01.3

01.3

02.0

00.3

00.7

03.3

01.0

02.0

0

3.0

01.0

00.0

1

0.3

00.0

1

0.0

10.0

1

0.0

10.0

10.0

10.0

10.0

00.0

00.0

00.0

10.0

00

.01

?.oo

2.7

03.0

0

2.0

02.7

0

3.3

02.3

0

2.3

02.7

04.3

03.3

03.3

04.7

02.7

03.3

03.3

02.7

0

17

.01

14.0

01

8.7

0

10.6

019.7

0

25.0

020.3

0

15.7

01

5.7

017.6

024.6

01

5.4

01

8.7

01

3.0

01

5.7

01

4.0

01

9.0

0

1.3

04.0

04.7

0

2.0

03.3

0

7.0

05.3

0

3.3

02.3

03.0

06.3

03.7

03.7

03.7

03.3

02.3

04.3

0

15

.71

10

.00

14

.00

8.6

01

6.4

0

18

.00

15

.00

1

2.4

01

3.4

014.6

0IP

. 3

01

1.7

015.0

09.3

01

2.4

011.7

01

4.7

0

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ST

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TE

R

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NY

ON

ME

MB

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Page 43: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Ta

ble

8.

(co

nt.

)

S*M

PLF

T

OT

AL

V

OL

CA

NIC

P

LU

TO

NIC

D

EP

TH

R

OC

K

FR

AG

'; IG

NF

OU

S

IGN

EO

US

(F

EE

T)

ME

TA

- S

ED

IME

NT

AR

Y

UN

KN

OW

N

AC

CE

SS

OR

Y

MO

RP

HIC

A

LT

&

OE

FM

M

INE

RA

LS

TO

TA

LF

RA

ME

UO

RK

FO

RM

AT

ION

M

EM

BE

R

S-7

A

SA

MP

LE

S

2949.0

2^5

4.0

29

71

. 0

29

97

.0

30,3

0.0

30

42

.03062.0

30

,72

.0

31

D8

.03110.0

3136.0

3140 .

03

15

6.0

31

64

.0

31

68

.03

18

0.0

3199.0

12

.80

12.0

16.3

23.0

1

7.7

?1

5.0

0

6.7

011.7

1

12

.60

8.7

011.6

112.4

25.9

18.2

06.0

06.8

010.0

0

3.4

05.0

02.0

13.0

0

3.3

05.3

0

3.4

03.7

0

7.0

03.3

03.6

06.4

04.0

02.6

02.3

03.4

05.4

0

7.3

02.7

02.0

00.0

0

0.7

06.7

0

0.7

05.7

0

3.0

04.0

05.0

04.0

01

.30

1 .0

02.0

01.7

01.0

0

0.7

00.3

00.3

00.0

0

0.0

11.0

0

0.3

01.3

0

0.3

00.7

C1.3

00.0

10.3

00.3

00.7

00.7

00.0

0

0.7

00.0

10.0

10.0

1

0.0

10.0

0

0.0

00.0

1

0.0

00.0

00.0

10.0

10.0

10.0

00.0

00.0

00.3

0

0.7

04.0

02.0

00.0

0

3.7

02.0

0

2.3

01

.00

2.3

00.7

01.7

02.0

00.3

04.3

01.0

01.0

03.3

0

0.0

10.0

20.0

00.3

1

0.0

20.3

0

0.0

10.3

0

0.0

10.0

20.0

10.0

10.0

10.0

20

.00

0.0

10.0

1

72

.21

75

.82

71 .

41

52.7

1

76.1

37

8.7

1

79.7

27

4.4

1

82.4

275.0

380 .

52

77.9

18

3.4

180.7

28

0.7

177.8

182.6

2

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ST

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Page 44: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Ta

ble

8

. (c

on

t.)

SA

MP

LE

DE

PT

H<

FF

ET

)

MA

TR

IX

TO

TA

L

SIL

ICA

CE

ME

NT

SC

AR

BO

NA

TE

K

AO

LIN

ITE

B

AR

ITE

A

NH

YD

RIT

E

AU

TH

IGF

.NIC

P

YR

ITE

PO

TA

SS

IUM

FE

LD

SP

AR

OT

HE

RC

EM

EN

TS

S-7

A

SA

MP

LE

S

2949. r

2954.0

2971.0

2S97.0

3030.0

3042.0

3062.0

3072. C

3108.0

3110.0

3136.0

3140.0

3156.0

3164.0

3168.0

3180.0

3199.0

1.70

3.00

2.30

46.00

0.00

0.00

0.00

0.00

0.30

0.30

0.70

0.00

0.00

0.00

0.70

1.30

0.70

24.70

9.60

2.60

0.30

4.30

7.00

5.30

6.30

0.30

1.70

6.90

1.40

0.01

2.00

1.30

1.60

1.30

0.00

0.01

0.01

0.01

3.30

2.30

5.00

0 .0

10.30

0.01

0.30

0.01

0.00

0.70

0.01

0.01

0.01

24.70

0.30

0.00

0.00

0.00

2.00

0.00

5.00

0.00

0.01

6.00

0.70

0.01

1.30

0.30

0.30

0.30

0.01

7.30

2.30

0.30

0.01

2.00

0.01

1.00

0.00

0.00

0.01

0.00

0.01

0.00

0.30

0.01

0.01

0.00

0.00

0 .00

0.00

0.00

0.01

0.30

0.00

0.00

0.01

0.30

0.00

0.01

0.01

' 0.00

0.00

0.00

0.01

0.01

0.00

0.00

0.00

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0 .01

0.00

0.00

0.01

0.00

2.00

0.30

0.00

1 .00

0.70

0.01

0.30

0.00

1.70

0.30

0.70

0 .00

0.00

0.70

1.30

1 .00

0.00

0.0 1

0.00

0.00

0.00

0.00

0.01

0.00

0.00

0.00

0.01

0.01

0.00

0.01

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

FO

RM

AT

ION

M

EM

BE

R

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

Page 45: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

Table 8.

(cont.)

SAMPLE

TOTAL

DEPTH

ALTERATION

(FEET)

PPODUCTS

TOTAL

NON-

FRAMEUOPK

POROSITY

FO

RM

AT

ION

M

EM

BE

R

ro

29A

9.0

29

54

.02971.0

29

97

.0

30

30

.03

04

2.0

3062.0

3072.0

3108.0

3110.0

3136.0

31

40

.03

15

6.0

3164.0

31

68

.03180.0

3199.0

1.4

01

.30

1.0

00

.01

2.6

02

.00

0.3

02

.00

1.7

04

.30

1.6

02

.30

0.3

00.0

11

.00

1.6

01

.70

27

.HO

13

.90

5.9

04

6.3

16

.90

9.0

05

.60

8.3

02

.30

6.3

09

.20

3.7

00

.31

?.0

13

.00

4.5

03

.70

0.0

11

0.3

02

2.7

01

.00

17

.00

12

.30

14

.70

17

.30

16

.30

18

.70

10

.30

18

.70

16

.30

17

.30

16

.30

17

.70

13

.70

S-7

A

SA

MP

LE

S

WE

ST

WA

TE

RC

AN

YO

NM

EM

BE

R

Page 46: Preliminary report on the petrography of the Upper Jurassic … · 2010-11-17 · PRELIMINARY REPORT ON THE PETROGRAPHY OF THE UPPER JURASSIC MORRISON FORMATION, MARIANO LAKE-LAKE

APPENDIX II

Explanation of computer generated downhole plots. Column no.

1. Mean grain size (phi units)2. Sorting index (phi standard deviation)3. Total quartz (columns 4-7)4. Monocrystalline quartz5. Polycrystalline quartz6. Cryptocrystalline quartz7. Metamorphic quartz8. Total feldspar (columns 8-9)9. Plagioclase feldspar

10. Potassium feldspar11. Total rock fragments (columns 11-15)12. Volcanic igneous13. Plutonic igneous14. Metamorphic15. Sedimentary16. Unknown altered and deformed17. Accessory minerals18. Total framework (columns 3, 8, 11 and 16)19. Matrix20. Total cement21. Silica22. Carbonate23. Kaolinite24. Barite25. Anhydrite26. Authigenic potassium feldspar27. Pyrite28. Other cements29. Total alteration products30. Total nonframework (columns 19, 20 and 29)31. Porosity

NOTE: 1) All compositional values volume percentages.2) MZ = zone of uranium mineralization.3) X = constituent observed (when against zero line observed as trace

quantity).4) 0 = constituent not observed.5) + = value of constituent greater than maximum value on scale.

43