 | | Report (volume) | | DEPARTMENT OF THE INTERIOR Ray Lyman Wilbur, Secretary U. S. GEOLOGICAL SURVEY George Otia Smith. Director...Director m 800 GEOLOGY AND MINERAL DEPOSITS OF SOUTHEASTERN ALASKA BY A. F. BUDDINGTON AND THEODORE CHAPIN... ADDITIONAL COPIES OF THIS PUBLICATION MAT BE PROCURED FROM THE SUPERINTENDENT OF DOCUMENTS U. 8. GOVERNMENT..._______________ Scope of report ___.__-_-____-__________-_--__-___-_________ Nature of the field work ____...____ ______________________________ Responsibility of authorship... ______________________________ Acknowledgments |  | | Journal (article/letter/editorial) | | to mantle olivine: evidence from the Duke Island Complex, Alaska Chusi Li & Joyashish Thakurta & Edward...indicators of mantle origin. Here we report the occurrence of this type of olivine in the peridotites of the...the Annette and Duke Island Complexes in southeastern Alaska which are interpreted to have formed at crustal...warranted in using this type of olivine or peridotite xenoliths containing this type of olivine in volcanic rocks...rocks to decipher the nature of the mantle. Introduction Olivine is the most abundant and arguably the |  | | Journal (article/letter/editorial) | | retention in ultramafic rocks of the Duke Island Complex, Southeastern Alaska Eric C. Stifter & Edward M...Ural-Alaskan-Type Duke Island Complex in Southeast Alaska. The addition of large amounts of sulfur from country...rocks occurred during fractional crystallization of the parental magma when clinopyroxene was becoming...interstitial liquid component is observable only in the form of interstitial sulfide in the S-rich rocks. Rounded...conditions of sulfide saturation. The presence of dense sulfide liquid inhibited the growth of silicate |  | Brew, David A., Drew, L.J., Schmidt, J.M., Root, D.H., Huber, D.F. (1991) Undiscovered locatable mineral resources of the Tongass National Forest and adjacent lands, southeastern Alaska. Open-File Report Vol. 1991 (91-10) US Geological Survey doi:10.3133/ofr9110 | Report (issue) | | DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY UNDISCOVERED LOCATABLE MINERAL RESOURCES OF THE TONGASS...NATIONAL FOREST AND ADJACENT LANDS, SOUTHEASTERN ALASKA By David A. Brew U.S. Geological Survey, MS 904...with the North American Stratigraphic Code. Any use of trade, firm, or product names is for descriptive...8 Regional geology 11 Methods 16 Explanation of tables 19 Past mineral-resource production 22...25 Appendix 1. Lists of reference materials pertinent to southeastern Alaska as a whole and to the individual |  | | Report (issue) | | 000irvi PETROLOGY OF THE DUKE ISLAND ULTRAMAFIC COMPLEX SOUTHEASTERN ALASKA ALILOGIaAd HAOO TIVH... The Geological Society of America, Inc. Memoir 138 Petrology of the Duke Island Ultramafic Complex Southeastern...Southeastern Alaska T. N. IRVINE Geological Survey of Canada 601 Booth Street Ottawa, Ontario 1974 ... Copyright 1974 by The Geological Society of America, Inc. Library of Congress Catalog Card Number 73-87233...SOCIETY OF AMERICA, INC. 3300 PENROSE PLACE BOULDER, COLORADO 80301 Printed in the United States of America |  | | Report (issue) | | DEPARTMENT OF THE INTERIOR GEOLOGICALSURVEY METAMORPHIC FACIES MAP OF SOUTHEASTERN ALASKA DISTRIBUTION...DISTRIBUTION, FACIES, AND AGES OF REGIONALLY METAMORPHOSED ROCKS By Cynthia Ousel-Bacon, David A. Brew, and Susan...Cooperation with State of Alaska Department of Natural Resources, Division of Geological and Geophysical...with the North American Stratigraphic Code. Any use of trade, firm, or product names is for descriptive.........^ Summary of the major metamorphic episodes that affected southeastern Alaska................. |  | | Journal (article/letter/editorial) | | Ā©2014 Society of Economic Geologists, Inc. Economic Geology, v. 109, pp. 643ā659 Platinum Group Element...Geochemistry of Sulfide-Rich Horizons in the Ural-AlaskanāType Ultramafic Complex of Duke Island, Southeastern...Southeastern Alaska Joyashish Thakurta,1,ā ,* Edward M. Ripley,2 and Chusi Li2 1Department 2Department of Geological...316 Clippinger Laboratories, Athens, Ohio 45701 of Geological Sciences, Indiana University, 1001 E....Indiana 47405 Abstract The Duke Island Ultramafic Complex in southeastern Alaska is a Ural-Alaskanātype complex |  | Li, Chusi, Ripley, Edward M., Thakurta, Joyashish, Stifter, Eric C., Qi, Liang (2013) Variations of olivine FoāNi contents and highly chalcophile element abundances in arc ultramafic cumulates, southern Alaska. Chemical Geology, 351. 15-28 doi:10.1016/j.chemgeo.2013.05.007 | Journal (article/letter/editorial) | | homepage: www.elsevier.com/locate/chemgeo Variations of olivine FoāNi contents and highly chalcophile element...abundances in arc ultramaļ¬c cumulates, southern Alaska Chusi Li a,ā, Edward M. Ripley a, Joyashish Thakurta...Department of Geological Sciences, Indiana University, Bloomington, IN 47401, USA Department of Geosciences...Kalamazoo, MI 49008, USA State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese...Chinese Academy of Sciences, Guiyang, 550002, China a r t i c l e i n f o Article history: Received |  | | Book | | form without the written permission of the publisher. Library of Congress Catalog Card Number: 67-19786...67-19786 Printed in the United States of America ISBN 0 471 96891 9 Contributors S. BHATTACHARJI, Brooklyn...DAVIDSON, The University of St. Andrews, Fife, Scotland J. B. DAWSON, The University of St. Andrews, Fife,... Scotland H. I. DREVER, The University of St. Andrews, Fife, Scotland H. von ECKERMANN, Edeby Ripsa...Ripsa, Sweden R. B. FORBES, University of Alaska, College, Alaska, U.S.A. G. W. FRANZ, Southeast Missouri |  | | Report (issue) | | IRC 868 THE UNITED STATES GEOLOGICAL SURVEY IN ALASKA: ACCOMPLISHMENTS DURING 1981 Geological Survey...COVER The front cover is a photograph of Mount Doonerak, one of the highest mountains in the Brooks Range...volume). The United States Geological Survey in Alaska: Accomplishments During 1981 Warren L. Coonrad...GEOLOGICAL SURVEY CIRCULAR 868 1984 Department of the Interior WILLIAM P. CLARK, Secretary U.S. Geological...Geological Survey Dallas L. Peck, Director Library of Congress Catalog Card Number 76-608093 Free on application |  | | Report (issue) | | and Petrogenesis of Alaskan^Type Ā«/ J: Ultranaafic-Mafic Intrusions, Southeastern Alaska U.S. GEOLOGICAL... AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U... along with prices of the last offerings, are given in the currentyear issues of the monthly catalog...catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publications...National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include NTIS |  | | Journal (article/letter/editorial) | | (1986) 94:12-28 9 Springer-Verlag1986 Assimilation of peridotite in zoned calc-alkaline plutonic complexes:...Department of Geological Sciences AJ-20, University of Washington, Seattle, WA 98195, USA Abstract....which intruded the pelitic Chiwaukum schist. Most of the major plutonic rock types (from websterite through...MgO/(MgO + FeO*)) from 0.90 to 0.89, the same as those of Chiwaukum metaperidotites, and distinctly different...relations indicate widespread, stepwise replacement of harzburgite by pyroxenite, hornblendite, gabbro and |  | | Journal (article/letter/editorial) | | Origin and Emplacement of the Ultramafic Rocks of the Emigrant Gap area, California1 by ODETTE B. JAMES...alpinetype peridotites. They occur along the western flank of the mountains and are commonly bounded by fault zones...1960). The ultramafic rocks of the Emigrant Gap area are in the north-east part of the Colfax quadrangle (Lindgren...(Lindgren, 1900), about io miles farther east than any of the alpine-type peridotites, and differ from them...by the Director, U.S. Geological Survey. [Journal of Petrology, Vol. 12, Part 3, pp. 523-60,1971 Downloaded |  | | Journal (article/letter/editorial) | | Institute of Technology, Pasadena, Calif. Relationship Between O18/O16 Ratios in Coexisting Minerals of Igneous...Petrologic Problems Abstract: Oxygen isotopic analyses of coexisting minerals in igneous rocks indicate the...the crystallization history and mineral paragenesis of these rocks. Detailed variations in the O18/O16 fractionations...be readily explained on the basis of equilibrium crystallization of magma with incomplete reaction. In...petrologic type. As is to be expected on the basis of their lowertemperature origin, O18/O16 fractionations |  | | Journal (article/letter/editorial) | | S H I P S SOUTHEASTERN IN ULTRAMAFIC ROCKS, ALASKA * Marvin A. LANPHERE U.S. Geological Survey, Washington...evidence suggests that a series of ultramafic complexes of the 'Duke Island type' located along a 560 km-long...km-long belt in southeastern Alaska crystallized from magmas of ultramafic composition. Some geologists...fusion of ultramafic material in the upper mantle. The 87Sr/86Sr ratios, corrected for growth of radiogenic...isotopic composition of strontium in alpine peridotites is significantly different from that of oceanic volcanic |  | | Report (issue) | | The Bls-siiko Island uitrabasic complex notes on relatod areas ia southeastern Alaska Matt S. YTalton...subnittod to ths Faculty of Pure Science of Columbia Tr.ivorsity in partial fulfillment of tl'jj rOxvaireL',-:-...-:-.tc for ths decree of Doctor of ?.:il llaroh 1C, 1S51 TT Abstract ..............................Poridotite complexes in southeastern Alaska. ............ 11 The Blashke Island complex ......................deformation of the c(implex and surrounding rocks . . 141 Summary of the petrology and mineralogy of the Blashke |  | | Journal (article/letter/editorial) | | analogue of Alaskan-type complexes H. M. Helmy and M. M. El Mahallawi Geology Department, Faculty of Science...fracture zone trending NE-SW in the Eastern Desert of Egypt. It intruded low-grade metasedimentary rocks...from the core of the intrusion are highly magnesian, a consistent increase in the Mg# of olivine (from...maĀ®c to the ultramaĀ®c units. Spinel has a wide range of Cr# and Mg# ratios. The various rock units deĀ®ne...contamination. A petrogenetic model involving a rapid rise of hydrous mantle magma along a major fracture zone |  | Su, Ben-Xun, Qin, Ke-Zhang, Zhou, Mei-Fu, Sakyi, Patrick Asamoah, Thakurta, Joyashish, Tang, Dong-Mei, Liu, Ping-Ping, Xiao, Qing-Hua, Sun, He (2014) Petrological, geochemical and geochronological constraints on the origin of the Xiadong UralāAlaskan type complex in NW China and tectonic implication for the evolution of southern Central Asian Orogenic Belt. Lithos, 200. 226-240 doi:10.1016/j.lithos.2014.05.005 | Journal (article/letter/editorial) | | geochemical and geochronological constraints on the origin of the Xiadong Ural-Alaskan type complex in NW China...China and tectonic implication for the evolution of southern Central Asian Orogenic Belt Ben-Xun Su, Ke-Zhang...geochemical and geochronological constraints on the origin of the Xiadong Ural-Alaskan type complex in NW China...China and tectonic implication for the evolution of southern Central Asian Orogenic Belt, LITHOS (2014),...doi: 10.1016/j.lithos.2014.05.005 This is a PDF ļ¬le of an unedited manuscript that has been accepted for |  | Su, Ben-Xun, Qin, Ke-Zhang, Sakyi, Patrick Asamoah, Malaviarachchi, Sanjeewa P.K., Liu, Ping-Ping, Tang, Dong-Mei, Xiao, Qing-Hua, Sun, He, Ma, Yu-Guang, Mao, Qian (2012) Occurrence of an Alaskan-type complex in the Middle Tianshan Massif, Central Asian Orogenic Belt: inferences from petrological and mineralogical studies. International Geology Review, 54 (3) 249-269 doi:10.1080/00206814.2010.543009 | Journal (article/letter/editorial) | | & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer...http://www.tandfonline.com/loi/tigr20 Occurrence of an Alaskan-type complex in the Middle Tianshan Massif...Laboratory of Mineral Resources , Institute of Geology and Geophysics, Chinese Academy of Sciences ,...Graduate University of Chinese Academy of Sciences , Beijing, 100049, China c Department of Earth Science...Science , University of Ghana , P.O. Box LG 58, Legon-Accra, Ghana d Research School of Earth Sciences , The |  | | Report (volume) | | Geochemistry of the Lower Coon Mountain Pluton, Northern California, with Respect to the Di.stribution of Platinum-Group...Geochemistry of the Lower Coon Mountain Pluton, Northern California, with Respect to the Distribution of Platinum-Group...GEOLOGICAL SURVEY BULLETIN 2014 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL...GEOLOGICAL SURVEY Dallas L. Peck, Director Any use of trade, product, or firm names in this publication...Federal Center, Box 25286 Denver, CO 80225 Library of Congress Cataloging in Publication Data Page, Norman |  | | Book (volume) | | THE GEOLOGY OF ALASKA The Geology of North America 'll L *ā¢ / ^ X, ^x /yj 5*? ^^vrA. j /X XxT &... ā¢ ' -ā-ā The Geology of North America Volume G-l The Geology of Alaska Edited by George Plafker... Acknowledgment Publication of this volume, one of the synthesis volumes of The Decade of North American Geology...made possible by members and friends of the Geological Society of America, corporations, and government...contributions to the Decade of North American Geology fund of the Geological Society of America Foundation. Following |  | | Journal (article/letter/editorial) | | Inclusions from Adak Island: Crystallization History, and Implications for the Nature of Primary Magmas and...by WALTER K. CONRAD AND ROBERT W. KAY Department of Geological Sciences, Cornell University, Ithaca,...volcano, Adak Island, Aleutian arc, reveal a nearly continuous record of crystallization of basaltic magmas...mantle, of the arc. The record is more detailed and continuous than that obtained from study of calc-alkaline...hornblende gabbro xenoliths are typical of those found in island arc andesites worldwide. Xenolithic inclusions |  | Eyuboglu, Yener, Dilek, Yildirim, Bozkurt, Erdin, Bektas, Osman, Rojay, Bora, Sen, Cuneyt (2010) Structure and geochemistry of an Alaskan-type ultramaficāmafic complex in the Eastern Pontides, NE Turkey. Gondwana Research, 18 (1) 230-252 doi:10.1016/j.gr.2010.01.008 | Journal (article/letter/editorial) | | m / l o c a t e / g r Structure and geochemistry of an Alaskan-type ultramaļ¬cāmaļ¬c complex in the Eastern...Department of Geological Engineering, Gumushane University, 29000, Gumushane, Turkey Department of Geology...University, Shideler Hall, Oxford, OH 45056, USA Department of Geological Engineering, Middle East Technical...University, TR-06531 Ankara, Turkey d Department of Geological Engineering, Karadeniz Technical University...and is one of many such intrusive complexes that were emplaced into the continental basement of the Eastern |  | | Journal (article/letter/editorial) | | Discordant bodies from olivine-bearing zones III and IV of the Stillwater Complex, Montana Ā± evidence for postcumulus...unzoned discordant bodies composed predominately of plagioclase with up to 35% olivine, occur at three...in Olivine-Bearing zones III and IV of the Middle Banded series of the Stillwater complex. The discordant...bodies are elongate perpendicular to the layering of the host cumulates with slender concordant apophyses...the host rocks is slightly more magnesian than that of the discordant bodies (Mg#75.8 Ā 0.7 versus Mg#74 |  | Li, Gangzhu, Li, Chusi, Ripley, Edward M., Kamo, Sandra, Su, Shangguo (2012) Geochronology, petrology and geochemistry of the Nanlinshan and Banpo maficāultramafic intrusions: implications for subduction initiation in the eastern Paleo-Tethys. Contributions to Mineralogy and Petrology, 164 (5) 773-788 doi:10.1007/s00410-012-0770-4 | Journal (article/letter/editorial) | | PAPER Geochronology, petrology and geochemistry of the Nanlinshan and Banpo maficāultramafic intrusions:...Yunxian-Jinghong magmatic belt in the western part of the Simao Block, one of several Gondwana-derived continental...continental fragments assembled by the closure of multiple Tethyan oceans. Different petrogenic models including...geochronological, petrological and geochemical study of both intrusions. Precise CA-ID-TIMS zircon UāPb dating...Nanlinshan and Banpo intrusions have similar ages of *298 and 295 Ma, respectively, confirming that they |
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