dggs.alaska.govdggs.alaska.gov/webpubs/usgs/b/oversized/b1425pt01.pdfdiorite. contains abundant...

1

Upload: buinhu

Post on 03-Jun-2019

214 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

TRANSCRIPT

Page 1: dggs.alaska.govdggs.alaska.gov/webpubs/usgs/b/oversized/b1425pt01.pdfdiorite. Contains abundant phenocrysts of microcline to 5 cm long. Full aerial extent of pluton unknown. Intruded

IJES I Vol. 1 J E Sijes.mshdiau.ac.ir/article_671654_01cdc39f5c5b90a773945ebf8e8ab… · 3.1. Petrography and micro-textures of andesite rocks Plagioclase phenocrysts (25 m to 1cm)

15. SITE 57 - Deep Sea Drillingclase' phenocrysts and smaller anhedral crystals of pyrox-ene and olivine. The Plagioclase phenocrysts are lath-shaped, average about 5 millimeters in

dggs.alaska.govdggs.alaska.gov/webpubs/usbm/sr/text/sr_75.pdf · Several areas north of the Brooks Range have the potential for production once transmission (pipel ine) facilities

Geology, Petrology and Petrographic Analysis of …Minerals observed under Plane Polarized Light (PPL) and Cross Polarized Light (XPL) are plagioclase, quartz, orthoclase, microcline,

Geochemistry of Variscan lamprophyre magmatism in the Saxo … · 2015-01-16 · Lamprophyres are strongly porphyritic, with abundant phenocrysts of biotite and amphiboles. Feldspar

EXPLANATORY BOOKLET TO ACCOMPANY ... - dggs.alaska.govdggs.alaska.gov/webpubs/dggs/ri/text/ri2005_001.pdf · Alaska Division of Geological University of Alaska Anchorage Library &

GSA Bulletin: Origin of broken phenocrysts in ash-flow tuffsgeology.byu.edu/home/sites/default/files/best_97_broken_phenocrysts.pdf · BROKEN PHENOCRYSTS IN ASH-FLOW TUFFS Geological

dggs.alaska.govdggs.alaska.gov/webpubs/dggs/gpr/oversized/gpr2000_030h_sh001.… · Resources. Division Geological & Geophysical Surveys (DGGS).. and Stevens Exploration Management

dggs.alaska.govdggs.alaska.gov/webpubs/dggs/pdf/text/pdf1985_041.pdf · Particle sizes and textures for Nenana coal field over- burden samples from six general area..... 117 Acidlbase

K203-1 (Aug 27 , 2001) - pubs.usgs.gov · PDF fileOl basalt Phenocrysts= %, % Pl-ol basalt Phenocrysts= %, % Aphyric rock Phenocrysts= %, % Others ... Fabric: clast-support

Campo Belo Metamorphic Complex: Tectonic Evolution of an … · 2003-04-07 · Itapecerica Gneiss of granitic Microcline, (3.38-3.0 Ga1) Gneiss composition plagioclase and and probable

Alteration of plagioclase and pyroxene phenocrysts in a ... · Valley of Ten Thousand Smokes, Alaska ... slightly altered tephra, ... at a submicrometer scale, within

dggs.alaska.govdggs.alaska.gov/webpubs/usgs/i/oversized/i-0807sht01.pdfDEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY .70. 53, : : • Qrgoo .Qcü 26 1341 .Qaf.. :KJs Qal

dggs.alaska.govdggs.alaska.gov/webpubs/usbm/ofr/oversized/ofr129_84_platek17.pdf340,000 Feet 380,000 Feet 420,000 Feet ok e '2374 0 Primary VABM - VABM VABM VABM USMM USLM — USLM

UNITED STATES THE - dggs.alaska.govdggs.alaska.gov/webpubs/usgs/of/text/of80-1082.pdfU.S. Geolagical Survey ... those publications and the prior work . ... Glomar Challenger of the

26. THE MICROCLINE-ORTHOCLASE CONTROVERSY --- CAN ...vcgeo005/Nr26Controversy.pdf · 1 ISSN 1526-5757 26. THE MICROCLINE-ORTHOCLASE CONTROVERSY --- CAN MICROCLINE BE PRIMARY? Lorence

· with felspar ñonocrystg inch in length. Many of the phenocrysts show Carlsbad twinning. Segregations of dark colored minerals are

Trace element concentrations in plagioclase phenocrysts of Karymsky andesite: Evidence for basalt replenishments Pavel Izbekov 1, John Eichelberger 1,

dggs.alaska.govdggs.alaska.gov/webpubs/dggs/pr/text/pr119.pdf · EDITORIAL POLICY Short Notes on Alaska Geology is a collection of brief scientific papers describing recent geological

Exsolution and Phase Diagrams Lecture 11. Alkali Feldspar Exsolution ‘Microcline’ - an alkali feldspar in which Na- and K-rich bands have formed perpendicular

HISTORICAL DEVELOPMENT IN LATERITIC PROFILEShorizon.documentation.ird.fr/exl-doc/pleins_textes/...neogeneses (photo 2) covering unaltered surface of quartz or microcline are very independant

Experimental hydration of natural volcanic clinopyroxene ...WATER IN NOMINALLY HYDROUS AND ANHYDROUS MINERALS Experimental hydration of natural volcanic clinopyroxene phenocrysts under

UNITED STATES OF THE INTERIOR - dggs.alaska.govdggs.alaska.gov/webpubs/usgs/of/text/of81-0624.pdf · UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Bibliographic References

Magmatic evolution recorded by phenocrysts in volcanic · PDF filePlagioclase phenocrysts are typically zoned. This mineral exhibits oscillatory, normal or reverse zoning. Two types

Late quaternary volcanic stratigraphy of the … established using ferromagnesian mineral assemblages and major element chemistry of ferromagnesian phenocrysts, and glass determined

Effects of silicon carbide on the phase developments in ...lejpt.academicdirect.org/A31/045_058.pdf · mullite, cristobalite and microcline. The kaolinite content of the raw kaolin

Geological Survey GEOLOGY OF THE KING’S POINT COMPLEX ... · Amphibole-porphyritic ash-flow tuffs, characteristically containing oikocrystic phenocrysts or 6d 6a Sparsely quartz-feldspar-porphyritic

ALASKAN-TYPE MAFIC-ULTRAMAFIC ROCKS IN … · Alaskan-type ultramafic rocks in central and northern British Columbia. ... clinopyroxene and amphibole phenocrysts in Gnat Lakes ultramafic

dggs.alaska.govdggs.alaska.gov/webpubs/usgs/mr/oversized/mr-0038sht01.pdf · DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY 620 560 Base by U.S. Geological Survey Topographic

RESEARCH ARTICLE DISCOVERYARTICLE ge 363 RESEARCH of the Kanawa Member of Pindiga Formation consists of calcite, dolomite, microcline, quartz and iron oxide. Gombe Sandstone is made

Precambrian Research, Elsevier Science Publishers B.V ... · clase) together with primary volcanic textures and features (eg., clinkery surfaces, vesicles and phenocrysts). Thus,

Chemical and Pb Isotope Composition of Phenocrysts from

UNIVERSITY OF SOUTH ALABAMA OF SOUTH ALABAMA Lecture 26: Class VIII-Silicates . ... (incl. Adularia/Moonstone) 2) Microcline (incl. Amazonite) 3) Sanadine . 4) Anorthoclase

I I j TN I : 2Y - dggs.alaska.govdggs.alaska.gov/webpubs/usbm/cr/text/cr_resource_associates_of... · grani te and some s:mds'tOI'lG ... 80" ..... -..-" -40 45 ' ~ ~ 2.0 o ----~ 1.5

Nil - dggs.alaska.govdggs.alaska.gov/webpubs/dggs/ch/text/ch008.pdfSTATE OF ALASKA Walter J. Hickel - Governor DEPARTMENT OF NATURAL RESOURCES Phil R, Holdsworth - Commissioner DIVISION