LOCATION MAP

EXPLANATIONGranitic rocks of Kodiak batholithGranitic rocks of trenchward beltBasalt and gabbro of trenchward beltLocations and ages of geochronology samples—

Sample location numbers identify data in table 1U/Pb ageK/Ar and Ar/Ar ageRb/Sr ageZircon fission-track ageApatite fission-track agePlanktonic foraminifer age and source

Contact—Dashed where approximately located; dotted where concealed

Fault—Dashed where approximately located; dotted where concealed

Thrust fault—Dotted where concealed. Sawteeth on upper (tectonically higher) plate

Location of gravity transect—See figure 2 for gravity transect and model

41, 58.2 Ma

55, 58.9±0.2 Malower intercept

54, 62±9 Mawith 80–120 Mainherited zircons

57, 58.4±0.2 Ma

58, 58.5±0.1 Ma

52, 59.2±0.20 Ma51, 59.1±0.2 Ma

23, 43±2 Ma

21, 53±3 Ma

19, 48±8 Ma

14, 50±4 Ma

25, 72±8 Ma

24, 55±4 Ma

17, 59±5 Ma

22, 44±4 Ma

20, 40±5 Ma

18, 29±3 Ma

16, 34±2 Ma

12, 35±2 Ma

11, 32±2 Ma

10, 28±2 Ma8, 30±2 Ma

7, 25±2 Ma

41, 58.2 Ma

39, 58.1±1 Ma40, 57.1±1 Ma

47, 63±3 Ma

36, 62.6±0.6 Ma

35, 62.1±0.6 Ma34, 60.8±3 Ma

2, 58.3±0.2 Ma

1, 60.2±0.9 Ma

38, 164.7 Ma

56, 184 Ma

37, 59.5 Ma

42, 188±11 Ma

44, 193 Ma

43, 197±11 Ma

5, 150–120 Ma

27, 153±10 Ma

59, 218±5 Ma60, 216±8 Ma

45, 173 Ma30, 148±14 Ma29, 77±10 Ma32, 55±4 Ma

31, 55±6 Ma

6, 59.3±2.2 Ma50, 193±6 Ma

49, 189±13 Ma61, 204±8 Ma

48, 207±11 Ma

4, 58.3±0.3 Ma

28, 53±5 Ma

33, 61.9±2.9 Ma

46, 192 Ma

62, 212.87±0.19 Ma

53, 59.0±0.3 Ma

13, 49±3 Ma

9, 50±3 Ma

3, 57.3±2.5 Ma

55, 1.9 Gaupper intercept

26, 64±4 Ma

15, 34±2 Ma

Early Tertiary (Moore and others, 1983)

Paleocene (Nilsen and Moore, 1979)

Early Tertiary (Moore and others, 1983)

Map D

Map E

Map C

Kodiak Formation(Cretaceous accretionary rocks)

Map F

Map A

GRAVITY TRANSECT

Map B

KODIAK BATHOLITH

SH

EL

I KO

F S

TR

AI T

B O R D E R R A NG

ES

F AU

LT

S H U Y A K T H R U S T

UG

AN

I K T H

RU

S T

Ghost Rocks Formation(Paleocene accretionary rocks)

U

pper C

retace

ous ac

cretion

ary ro

cks (U

yak C

omple

x)

Triassic-Ju

rassic arc a

nd acc

retiona

ry rock

s

Triassic-Ju

rassic arc r

ocks

Oligocene and younger sedimentary r

ocks ALASKA

AREA OFMAP

PA

CI F

I C O

CE

ANK

OD

I AK

I SL

AN

D

AF

OG

NA

K

I SL

AN

D

K A L S I N B A Y F A U L T RUSSIA CANADA

56

70

70

45

71

56

88

61

71

59

71

5970

65

58

74

76

54

74

7166

55

84

66

81

46 86

46

77

6175

62

79

56

32

3075

71

85

81

60

78

52

75

70

74

8

54

85

85

59

61

73

72

80

82

70

25

84

70

Tsf

Tdp

TdpTdp

TdpQu

Tnc

Tnc

TcgQu

Qu

Tgrm

Tgrm

Tgr

Qu

Tpgs

Tpg

Tgrm

Tcg

Qu

Tgrm

Tgr

Tgr

Qu

Tpg

Kk

Tgr

Tgr

Tgr

Tgr

Tgrm

Qu

Tdp

7269

76 65

75

7188

8985

57

75

54

71

69

68

82

30

66

45

Qu

KktTgr

Tdp

Tgr

Kkl

Tpg

Kk

TgrKkt

KkTpg

Kk

Qu

Kk

Tcg

Sitkal idak Strai t

82

6068

74

4055

46

86

73

74

70

86

80

81

78

61

71

75

66

75

78

75

79

50

87

73

37

64

74

64

72

78

75

61

74

76

64

64

Tgr

Tgr

Tgr

Kk

Kk

Qu

Qu

KkKkt

Kk

Kk

Tgm

Kk

Qu

Tgl

Qu

Qu

Kk

Tgl

Qu

Qu

Kk

Qu

Kk

Tgl

Tgm

Tgl

Kk

Qu

Kk

Tgl

Kk

Tgm

33 5760

3478

39

68

25

25

64

68

5864

53 51

44

39

84

45

69

4054

45

5921

34

24

50

18

57

63

363564

7547

67

80

18

74

64

76

31

34

71

Tgl

Qu

Tglc

Kk

Kk

Kk

TglcQu

Tgl

Kk

Kk

15

64

2539

85

41

11

3330

28

33

4020

17

31

19

33

25

25

80

3129

Kk

Tgl

Kk

Kk

KkKk

Tgh

Tgl

Qu

Qu

Qu

Tgh

Qu

Tgh

Tgh

Tgm

Kk

Tgh

Tgl

Tgm

Tgl

Qu

Qu

Qu

Tgl

Kk

TglKk

Qu

Kk

Qu

Kk

Tgl

Tgm

Tgl

Kk

Kk

Kk

Kk

Kk

72

6560

6865

44

73

52

66

59

80

71

65 69

75

69

75

80

60

61

63

46

55

36

70

72

45

63

46

51

75

31

66

61

49

63

41

7171

64

58

71

81

59

74

40

63

78

65

5854

60

78

60

55

6474

76

38

26

62

61

55

64

47

63

2635

3578

70

48

505059

51

45

76

44

64

75

70

74

74

71

78

69

89

75

74

5660

85

87

75

74

70

64

71

73

49

6265

58

63

70

62

65

59

80

7572

72

73

70

67

79

7581

45 89

75

55

86

78

84

81

81

76

74

65

71

48

44

71

39

50

72

73

59

73

74

74

70

67

63

65

47

85

58

81

62

59

45

55

62

4580

60

503843

37

79

74

69

67

77

71

60 73

62

86

2080

84

30

50

15

60

45

70

55

4587

89

78

50

75

Tgl

Tgl

Ta

Ta

Ta

cordierite isograd

cord

ierit

e is

ogra

d

cord

ierite

isog

rad

cordierite isograd

garn

et is

ogra

d

cord

ierit

e iso

grad

garnetzone

biotitezone

biotitezone

biotitezone

biotitezone

cordierite zone

cordierite zone

biotitezone

cordierite zone

cord

ierite

isog

rad

B

B'

KODIAK BATHOLITH

KIZHUYAK BAYPLUTON

CROWN MOUNTAINPLUTON

KODIAK BATHOLITH

BA

Y

Te

rr

or

L

ak

e

A

A' KI

ZH

UY

AK

B A Y

cordieritezone

cordierite isograd

biotitezone

biotitezone

WHALE PASSAGEPLUTON

cordieritezone

biotitezone

cord

ierit

e iso

grad

cordieritezone

biotitezone

cordierite isograd

SHERATIN BAYPLUTON

ANTON LARSENBAY PLUTON

BA

Y

BA

Y

U

U

D

D

KALSIN BAY FAULT

KODIAK BATHOLITH

KODIAK BATHOLITH

cord

ierit

e iso

grad

cordieritezone

cordierite iso

grad

cordi

erite

isogra

d

Sitkal idak Is land

A

A'

KALSIN

BAY

FAULT

SITKALID

AK

PLUTO

N

UD

KALSIN

BAY F

AULT

UD

UD

UD

PASAGSHAK PLUTON

SHAFT PEAK PLUTON

angular unconformity

angular unco

nformity

DU

cordierite zone

1

EXPLANATION1 Moore (1967)2 Fisher and Byrne (1987)3 Sample and Moore (1987)4 Capps (1937)5 Moore and others (1983)

KODIAK

ISLANDSHELIK

OF STRAIT

PACIFIC

O

CEAN

5

2

3

4

INDEX MAP SHOWING SUPPLEMENTAL SOURCES OF GEOLOGIC MAPPING

57°

58° 154° 153°

D, 0

D, 0

Observed gravity value and errorCalculatedGr

avity

ano

mal

y (m

Gals

)

−20

−15

−10

−5

0

5

10

100 20 30Distance (kilometers)

Dept

h (k

ilom

eter

s)

10

5

0

Air

D, 0

D, 0

D, −100

D, 0

D, −100

D, 0

D, +100

D, 0

granitegranite

gabbro

granitehigh

inclusion granite /

granodiorite

D, 0

D, 0

D, −100

D, density anomaly in kg/m3

Kodiak Formation metasedimentary

rocks

Kodiak Formation metasedimentary

rocks

Kodiak Formation metasedimentary

rocks

D, 0

KALSIN BAYFAULT

Ghost RocksFormation

metasedimentaryrocks

NO VERTICAL EXAGGERATION

Figure 2. Gravity transect (A) and gravity model (B) across the Kodiak batholith (see fig. 1 for transect location). This model indicates that the Kodiak batholith is vertically extensive and extends downward for a minimum of 6 km. Densities are constrained by density measurements of the Kodiak batholith and surrounding rocks. Modified from Farris and others (2006).

A

B

NORTHWEST SOUTHEAST

KALSIN BAYFAULT

NO VERTICAL EXAGGERATION

A

Kk

Tpg

Kkl Tdp

Kkt

Tgr

1,000FEET

SEA LEVEL

−1,000

−2,000

−3,000

−4,000

−5,000

Tcg

A'

1,000FEET

SEA LEVEL

−1,000

−2,000

−3,000

−4,000

−5,000

B'

magmatic foliation

beddingbedding

KkKk

KkTgl

Tgl

Tgl

Tgm

Tgm

Tgh

Surficial units not shown NO VERTICAL EXAGGERATION

B

2,000

3,000

4,000

1,000

−1,000

−2,000

SEA LEVEL

FEET

2,000

3,000

4,000

1,000

−1,000

−2,000

SEA LEVEL

FEET

Surficial units not shown

A A'

magmatic foliationbedding

2,000

3,000

4,000

1,000

−1,000

SEA LEVELKk

TglKk

FEET

2,000

3,000

4,000

1,000

SEA LEVEL

FEET

NO VERTICAL EXAGGERATION−1,000

ABBREVIATED DESCRIPTION OF MAP UNITS

[See Description of Map Units (in pamphlet) for complete unit descriptions]

STRATIFIED ROCKSUndivided surficial deposits (Quaternary)—Unconsolidated sediments dominantly

composed of silt, sand, gravel, and glacial till. (Maps A–F)Narrow Cape Formation (Miocene)—Tan poorly cemented shallow-marine siltstones,

sandstones, and conglomerates that contain molluscan fossils and Kodiak batholith granitic cobbles. Bottom of unit contains coarse-grained conglomerate and breccia with clasts as much as 40 cm across derived from the underlying Ghost Rocks Formation. Above basal rocks, finer grained sandstone and siltstone is more common. (Map F)

Sitkalidak Formation (Oligocene and Eocene)—Dark-gray to black argillite and graywacke turbidites. Planar beds typically 10 to 50 cm thick. Thicker graywacke beds often contain argillite rip-up clasts. (Map F)

Ghost Rocks Formation (Paleocene)Mélange—Mélange zone at south edge of the Ghost Rocks Formation. Rocks range from

intensely folded and faulted beds of sandstone and shale to coherent sedimentary beds found only as isolated phacoidal structures surrounded by shale-dominated mélange. Rootless fold hinges and isoclinal folds common. (Map F)

Coherent strata—Light-gray, highly deformed sandstone and shale. Graywacke beds tend to be coherent with open short-period folds. Soft-sediment deformation prevalent through-out. Shale-rich layers not as common, but typically more deformed and sometimes with mélange texture. Beds are typically 10 to 20 cm thick and as thick as 1 to 2 m. In addition, rocks are intruded by basaltic dikes and small granitic and gabbroic plutons, which range in age from 63 to 60 Ma. (Maps D–F)

Kodiak Formation (Cretaceous)—Argillite and graywacke turbidites structurally repeated many times by thrust faults. Beds range from 5- to 10-m-thick massive graywacke to 5- to 10-cm-thick rhythmically bedded argillite. Argillite-rich sections are almost black, whereas the graywacke is dark gray. (Maps A–F)

Hornfels—Sheared hornfelsic argillite and graywacke of the Kodiak Formation along the Kalsin Bay Fault. Metamorphic cordierite and biotite present. (Maps D, E)

Leucocratic dikes—Highly disrupted and sheared Kodiak Formation intruded by leuco-cratic dikes. Unit located between gabbro and granite bodies on Sitkalidak Island. (Maps D, E)

IGNEOUS ROCKSKodiak batholith (Paleocene)—Elongate body of biotite granite, granodiorite, and tonalite

that extends along the mountainous axis of Kodiak Island. Includes main body and compositionally similar satellite plutons that surround it (map D). This informal unit is further subdivided based on amount of partially assimilated host-rock inclusions. Ranges in age from 59.2±0.2 Ma at the southwest end to 58.4±0.2 Ma at its northeast tip (Farris and others, 2003, 2006)

Aplite dikes—White to tan, fine-grained quartz and potassium feldspar aplite dikes, 1 cm to 10 m wide, which intrude high-inclusion unit (Tgh) of Kodiak batholith. (Map A)

Low-inclusion unit—Medium-grained (0.5 to 1 cm) biotite granite and granodiorite containing quartz, potassium feldspar, plagioclase, biotite, and ilmenite. Rocks have low percentage of host-rock inclusions. Sillimanite xenocrysts are rare or absent, unlike medium- and high-inclusion units (Tgm, Tgh). Near pluton margin, muscovite and relatively unaltered host-rock xenoliths are present. (Maps A–D)

Medium-inclusion unit—Biotite-rich granodiorite and tonalite containing as much as 5 to 10 percent partially assimilated host-rock material composed of 1- to 15-cm quartz clots, 1- to 30-cm biotite aggregates, 1- to 10-cm sillimanite xenocrysts, and 5- to 50-cm metamorphosed host-rock xenoliths. Andalusite, kyanite, and garnet xenocrysts also present, but less common than sillimanite. (Maps A, D)

High-inclusion unit—Biotite-rich granodiorite and tonalite containing 10 to 50 percent partially assimilated host-rock material consisting of 1- to 15-cm pure quartz clots, 1- to 30-cm biotite aggregates, 1- to 10-cm sillimanite xenocrysts, and 5- to 50-cm altered host-rock xenoliths. Andalusite, kyanite, and garnet also present. Rocks contain 20 to 40 percent biotite and appear as mixture of highly metamorphosed host-rock fragments and biotite-rich granite. (Map A)

Leucocratic muscovite-bearing granite—Leucocratic muscovite-bearing, biotite-poor granite. Rare garnet. Muscovite concentration increases with proximity to host-rock blocks. Biotite present in schlieren, which generally parallels blocks of host rock. Host-rock blocks are common, in various stages of disaggregation, and typically fragmented along bedding planes. Quartz-filled miarolitic cavities also present. (Map C)

Trenchward belt (Paleocene)—Informal group of units of Paleocene igneous rocks along and south of Kalsin Bay Fault. Composed of small granitic and gabbroic plutons; dikes of porphyritic gabbro, basalt, and andesite; and pillow basalt. Most rocks intrude the Ghost Rocks Formation and range in age from 60 to 63 Ma (Moore and others, 1983); however, some are interbedded with the Ghost Rocks Formation strata (Plumley and others, 1983; Moore and others, 1983)

Biotite-rich granodiorite—Biotite-rich, clinopyroxene-bearing granodiorite and tonalite. Clinopyroxene phenocrysts partially resorbed and altered to biotite. Mafic minerals variably range from 1 to 25 percent. Clinopyroxene increases in abundance with proxim-ity to gabbroic pods, which can be as much as hundreds of meters across. Larger (1–5 mm) plagioclase phenocrysts commonly surrounded by matrix of granular, intergrown quartz and alkali feldspar. (Maps E, F)

Granodiorite and granite with voluminous stoped blocks—Granodiorite and granite that contain greater than 25 percent stoped blocks by volume. Host-rock blocks of the Ghost Rocks Formation range to 5 m across and have dark reaction rims and can be visually reassembled like puzzle pieces. Block margins are sharp to gradational. Where host-rock block concentrations are highest, the granite is most leucocratic and composed almost entirely of quartz, potassium feldspar, and host-rock remnants. (Map F)

Porphyritic gabbro—Porphyritic clinopyroxene–plagioclase gabbro. Plagioclase phenocrysts, 1 to 2 cm in diameter, form a framework filled with smaller, intergrown clinopyroxene and plagioclase grains. Commonly intruded into the Ghost Rocks Forma-tion as thick 10- to 50-m-wide dikes that fine upward. Upper dike sections almost entirely devoid of large plagioclase and may grade into basalt. Equigranular and coarser grained in Pasagshak Pluton and on Sitkalidak Island. (Map F)

Fine-grained basalt—Very fine grained basalt to andesite dikes and pillows typically altered to greenstone with common calcite veins. Rarely visible clinopyroxene phenocrysts. Pillows may show hyaloclastite fragments. Basalt dikes, 20-cm- to 20-m-wide, may show baked margins, grade into pillows, and crosscut mélange features in the Ghost Rocks Formation. In the Pasagshak Bay area, 40Ar/39Ar dating on a 3-m-wide dike yielded an age of 60.15±0.86 Ma (Farris, 2010). (Maps E, F)

EXPLANATION OF MAP SYMBOLSContact—Solid where location is certain; dashed where inferred (labeled where angular

unconformity); dotted where concealedFaults—Solid where location is certain; dashed where inferred; dotted where concealed

Normal fault—U, upthrown side; D, downthrown side. Arrow pair shows relative motion. Long arrow shows bearing and plunge of lineation

Strike-slip fault—Arrows show relative horizontal movement

Right lateral

Left lateral

Unit Ta dike

Unit Tgl dike

Folds—Solid where location is certain; dashed where approximate. Showing trace of axial surface and direction of plunge where appropriate

Anticline

Syncline

Overturned syncline

Metamorphic isograd—Dashed where inferred

Strike and dip of bedding—In sedimentary and metasedimentary rocksInclined

Vertical

Strike and dip of foliationMagmatic foliation

Foliation in metamorphic and sedimentary rocks

Strike and dip of cleavageInclined

70

70

70

70

UD

Qu

Tpg

Tnc

Tsf

Kk

Tpgs

Tgrm

Tdp

Tcg

Tgr

Kkt

Kkl

Tgl

Ta

Tgh

Tglc

Tgm

Kkt

Kk

Tgrm

Tnc

Tsf

Kkl

Tgr

Ta

Qu

TdpTcgTpg Tpgs

Tgl Tgm Tgh Tglc

STRATIFIED ROCKS IGNEOUS ROCKS

Eocene

Miocene

Oligocene

QUATERNARY

TERTIARY

Paleocene

LateCretaceous CRETACEOUS

CORRELATION OF MAP UNITS

[See Description of Map Units and table 1 (in pamphlet) for precise unit ages]

Unconformity

CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929

CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929

CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929

CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929

MAP A. KODIAK BATHOLITH NEAR TERROR LAKE

Geologic mapping from Moore (1967) compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003

Topographic base from U.S. Geological Survey, Kodiak D-3, 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984

MAP B. WHALE PASSAGE PLUTON

Geologic mapping from Capps (1937) and Moore (1967), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003

Topographic base from U.S. Geological Survey, Kodiak D-2 and D-3, 1947 (revised 1978) Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984

MAP C. ANTON LARSEN BAY PLUTON

Geologic mapping from Moore (1967) and Moore and others (1983), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003

Topographic base from U.S. Geological Survey, Kodiak A-5, 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984

Geologic mapping from Moore (1967), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003

Topographic base from U.S. Geological Survey, Kodiak A-4, 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984

Geologic mapping from Moore (1967) and Fisher and Byrne (1987), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003

Topographic base from U.S. Geological Survey, Kodiak B-1, C-1, and C-2 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984

MAP F. TRENCHWARD BELT INTRUSIVE ROCKS NEAR PASAGSHAK BAY

Geologic mapping from Moore (1967) and Moore and others (1983), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003Manuscript approved for publication September 23, 2019

Topographic base from U.S. Geological Survey, Kodiak C-3, C-4, D-3, and D-4 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984

MAP D. KODIAK BATHOLITH AT THREE SAINTS BAY

MAP E. SITKALIDAK PLUTONAT SITKALIDAK STRAIT

Figure 1. Map of Kodiak Island showng the Kodiak batholith, other Paleocene intrusive rocks, regional structures, location of gravity transect, geochronology sample locations, and pluton map locations. See figure 2 for gravity transect and model.

57°35'

57°45'

153°06' 153°00' 152°54'

57°40'

57°45'

153°06' 153°00' 152°54'

57°40'

57°35'

57°52'

152°45'

152°50'

57°56'

152°45'

57°56'

152°50'

57°52'

152°40' 152°36'

57°51'

57°54'57°54'

152°36'152°40'

57°51'

57°09'

57°06'

57°03'

57°12'

153°35' 153°30' 153°25'

57°03'

57°06'

57°09'

57°12'

153°35' 153°30' 153°25'

153°14'31"57°14'26"

153°09'26"57°14'26"

153°09'26"57°10'51"

153°14'31"57°10'51"

57°12'

57°14'

57°12'

57°14'

153°12"

153°12"

153°37'34"57°14'42"

153°20'28"57°14'42"

153°20'28"57°02'37"

153°37'34"57°02'37"

152°43'45"57°56'05"

152°34'37"57°56'05"

152°34'37"57°49'50"

152°43'45"57°49'50"

152°54'52"57°57'31"

152°43'13"57°57'31"

152°43'13"57°57'31"

152°54'52"57°50'44"

153°10'17"57°48'53"

152°50'10"57°48'53"

152°50'10"57°30'03"

153°10'17"57°30'03"

57°30'

57°27'

57°33'

152°30' 152°25' 152°20'

57°27'

57°30'

57°33'

152°30' 152°25' 152°20'152°33'45"57°34'05"

152°17'35"57°34'05"

153°17'35"57°34'05"

152°33'45"57°24'50"

57°00'

57°30'

58°00'

154°00' 153°00' 152°00'155°00'

CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929

CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929

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This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map.

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Digital files available at https://doi.org/10.3133/sim3441

Suggested citation: Farris, D.W., and Haeussler, P.J., 2020, Selected geologic maps of the Kodiak batholith and other Paleocene intrusive rocks, Kodiak Island, Alaska: U.S. Geological Survey Scientific Investigations Map 3441, pamphlet 10 p., scale 1:50,000, https://doi.org/10.3133/sim3441.

ISSN 2329-132X (online)

https://doi.org/10.3133/sim3441

Selected Geologic Maps of the Kodiak Batholith and other Paleocene Intrusive Rocks, Kodiak Island, AlaskaBy

David W. Farris1 and Peter J. Haeussler2

2020 1East Carolina University 2U.S. Geological Survey

U.S. Department of the InteriorU.S. Geological Survey

Scientific Investigations Map 3441Pamphlet accompanies map