 | | Report (volume) | | ..... 10 ..!; :,.0.-d Studies of the Early Mesozoic Basins of the Eastern United States ALBERT j...editors and GILPIN R. ROBINSON, Jr., A summary of current research on early Mesozoic sedimentary and...resources and studies of geophysics, structure, and tectonics of the basins of the Eastern United States... GEOLOGICAL SURVEY BULLETIN 1776 DEPARTMENT OF THE INTERIOR DONALD PAUL HODEL, Secretary U.S. GEOLOGICAL...80225 Library of Congress Cataloging in Publication Data Studies of the early Mesozoic Basins of the Eastern |  | | Journal (article/letter/editorial) | | Aufs~itze Structure and Petrology of Mylonite and Related Rocks from the Lesser Himalaya, Garhwal, India...the Lesser Himalayan region of Garhwal, an elongate, NW--SE trending zone of mylonitic rocks is developed...metasedimentary formation of the Deoban-Tejam Belt. Detailed petrography of various mylonitic rocks indicates...the trace of Singuni Thrust, Uttarkashi Thrust and Main Central Thrust in the 'a' direction of tectonic...mylonitic rocks, a probable contemporaneous development of the metamorphic and structural elements has been |  | Christie, A. B., Simpson, M. P., Brathwaite, R. L., Mauk, J. L., Simmons, S. F. (2007) Epithermal Au-Ag and Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand. Economic Geology, 102 (5) 785-816 doi:10.2113/gsecongeo.102.5.785 | Journal (article/letter/editorial) | | ©2007 Society of Economic Geologists, Inc. Economic Geology, v. 102, pp. 785–816 Epithermal Au-Ag and...Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand ANTHONY B. CHRISTIE,† GNS Science... Box 30-368, Lower Hutt 5040, New Zealand MARK P. SIMPSON, School of Geography, Geology and Environmental...The University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand ROBERT...30-368, Lower Hutt, New Zealand JEFFREY L. MAUK, AND STUART F. SIMMONS School of Geography, Geology and |  | | Journal (article/letter/editorial) | | mines, and application to the Martha Au–Ag mine, Waihi, New Zealand Devin N. Castendyk a a,* , Jeffrey...SGES, The University of Auckland, Tamaki Campus, Private Bag 92019, Auckland, New Zealand b Geology Department...Department, The University of Auckland, Private Bag 92019, Auckland, New Zealand Received 2 September...method to measure the distribution and concentration of wall rock minerals in open pit mines, and applies...Au–Ag mine, Waihi, New Zealand. Heterogeneous ore deposits, like Martha, require a large number of wall |  | | Report (issue) | | Titanium Chapter T of Critical Mineral Resources of the United States—Economic and Environmental Geology...1802–T U.S. Department of the Interior U.S. Geological Survey Periodic Table of Elements 1A 8A 1 2...left, Ilmenite open pit mine at Tellnes, Sokndal, Norway. Photograph courtesy of Mike Norton/CC-BY-SA-3...wiki/File:Tellnes.jpg. Lower left, open pit mining of heavy mineral sands at the Maxville deposit on Trail...Chemours Co., used with permission. Upper right, because of titanium’s high strength-to-weight ratio, it is used |  | | Journal (article/letter/editorial) | | ROBERT S. PENCZAK* AND ROBERT MASON** Department of Geological Sciences, Queen's University, Kingston...situated in thewesternpartof the Uchisubprovince of the Superior province. Geochronological evidence...superimposed phases of wall-rockalteration occurred priorto the eraplacement of mainstage veinsandwerecontrolled...textures of themain-stage veins,sheeted veinletzones andstockwork fracturing, multiplephases of hydrothermal...1). TheCampbell mine,theRed Lakemine(theRedLakeminewasformerlyknownasthe A.W. White mine and the Diekensonmine) |  | | Journal (article/letter/editorial) | | ARC Centre of Excellence in Ore Deposits (CODES), School of Physical Sciences, University of Tasmania,...7001, Australia Geological Survey of South Australia, Department of State Development, Adelaide, SA 5001...5001, Australia c Department of Earth Sciences, The University of Adelaide, Adelaide, SA 5005, Australia...a c t Neoarchean–earliest Paleoproterozoic rocks of the Gawler Craton preserved within the Mulgathing...pelitic gneisses of the Mulgathing Complex from three locations (Challenger, Mt Christie and Blackfellow |  | | Journal (article/letter/editorial) | | ©2007 Society of Economic Geologists, Inc. Economic Geology, v. 102, pp. 841–871 Geochemistry and Stable...Isotope Composition of Altered Rocks at the Golden Cross Epithermal Au-Ag Deposit, New Zealand JEFFREY L...P. SIMPSON School of Geology, Geography, and Environmental Science, University of Auckland, Private Bag...Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Golden Cross is a late Miocene...assemblages located in the Coromandel peninsula, New Zealand. Gold- and Ag-bearing quartz veins occur |  | | Journal (article/letter/editorial) | | hydrothermal systems John R. Holloway Departments of Geological Sciences, Chemistry & Biochemistry, Arizona...State University, Tempe, AZ 85287-1404, USA Abstract Many features of the magma-hydrothermal interface are...during rapid crystallization of basaltic magma, which results in generation of highly reducing hydrothermal...hydrothermal fluids. A consequence of the reaction is that the ferric/ferrous ratio observed in the resulting...than it was in the basaltic magma, the redox state of the magma inferred from the ferric/ferrous ratio |  | | Journal (article/letter/editorial) | | Precambrian Research 151 (2006) 160–184 Timing of Mesoproterozoic tectonic activity in the northwestern...Abstract An array of northeast-trending shear zones in the north-west Gawler Craton of South Australia...domains, each with contrasting metamorphic histories. New 40 Ar/39 Ar data provide age constraints for movement...for reshuffling of crustal blocks that were already adjacent, rather than amalgamation of exotic terranes...terranes. The new data also provide additional evidence for a widespread metamorphic and deformational event |  | | Journal (article/letter/editorial) | | ©2011 Society of Economic Geologists, Inc. Economic Geology, v. 106, pp. 1031–1041 Geophysical Characteristics...Characteristics of Adularia-Sericite Epithermal Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand...JEFFREY L. MAUK School of Geology, Geography, and Environmental Science, University of Auckland, Private Bag...Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Aeromagnetic, airborne radiometric...data from the adularia-sericite epithermal province of the Hauraki goldfield have delineated distinct anomalies |  | | Journal (article/letter/editorial) | | Vol.94, 1999,pp.387404 Isotopic Characteristics of MetalDeposits, Intrusions, and SourceRocksin thePioeheDistrict...ofsulfideminerals, andmetalabundances definetwoperiods of metalmineralization: LateCretaceous (ca.100to90 Ma)...features of Oligocene deposits areproximityto Oligocene intrusions andburied,magnetic apophyses of Oligocene...andsignificant copperproduction. Structural analyses of thePiochedistrictandof adjacent ranges, combined...allowfortensof kilometersor moreof eastward displacement of LateProterozoic, Cambrian, andlatePaleozoic siliciclastic |  | | Journal (issue) | | geared for those mineral collectors who like to visit new places in order to expand their knowledge. My own...started last summer at the meeting of the Midwest Chapter of the Friends of Mineralogy associated with the...The speaker talked about the origin and mineralogy of the carbonatitelike deposits in the Bancroft area...I live in an area underlain by thousands of square miles of sedimentary rock, the interest in such an...often. The trip involved myself and two other members of the Kyana Geological Society in Louisville and a |  | | Report (issue) | | Department of the Interior U.S. Geological Survey Unalaska quadrangle Description of the mineral occurrences...Geological Survey (1996) for description of the information content of each field in the records. The data...data presented here is maintained as part of a statewide database on mines, prospects and mineral occurrences...occurrences throughout Alaska. Distribution of mineral occurrences in the Unalaska l:250,000-scale quadrangle...digital retrievals should be directed to the author(s) of this compilation: F.H. Wilson U.S. Geological Survey |  | | Journal (article/letter/editorial) | | metamorphism in the Hylas zone and adjacent parts of the eastern Piedmont in Virginia ANDY R. BOBYARCHICK*...III 1 j Orogenic Studies Laboratory, Department of Geological Sciences, Virginia Polytechnic and State...Structural and pétrographie studies of the Hylas zone northwest of Richmond, Virginia, reveal that late...Petersburg(?) granite. Rocks in the Goochland complex west of the Hylas zone underwent at least two deformations...in the Hylas zone. Brittle deformation in the form of high-angle faulting and locally intense fracturing |  | | Journal (article/letter/editorial) | | Society of Economic Geologists, Inc. Economic Geology, v. 106, pp. 921–943 Punctuated Evolution of a Large...Large Epithermal Province: The Hauraki Goldfield, New Zealand* JEFFREY L. MAUK,1,† CHRIS M. HALL,2 JOHN...CHESLEY,3 AND FERNANDO BARRA3,* 1 School of Environment, University of Auckland, Private Bag 92019, Auckland...Centre, Auckland 1142, New Zealand 2 Department of Geological Sciences, University of Michigan, Ann Arbor...Michigan 48109-1005 3 Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Abstract |  | | Journal (article/letter/editorial) | | ROBERT S. PENCZAKL* AND ROBERT MASON** Department of Geological Sciences, QueensUniversity, Kingston,... Ontario,CanadaK7L3N6 Abstract TheCampbell mine,located in northwestern Ontario,Canada, is developed...andultramarie rocks with lesserquantities of rhyoliteanddiorite.The sequence of hydrothermal alteration hasbeensubdivided...into threepartiallyoverlapping phases consisting of an earlyalteration phase,followedby the main-stage...themineralization phase. Earlyalteration consists of twosubstages represented by carbonatization andpervasive |  | | Report (issue) | | Department of the Interior U.S. Geological Survey. Cold Bay quadrangle Description of the mineral...Geological Survey (1996) for description of the information content of each field in the records. The data...data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences...occurrences throughout Alaska. Distribution of mineral occurrences in the Cold Bay l:250,000~scale quadrangle...digital retrievals should be directed to the author(s) of this compilation: F.H. Wilson Alaska U.S. Geological |  | | Report (issue) | | DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY STRATIGRAPHY AND MAJOR ELEMENT GEOCHEMISTRY OF THE LASSEN...stratigraphic nomenclature. Menlo Park, Ca. 1984 TABLE OF CONTENTS ABSTRACT .................................................................... 15 Basalt of Camp Forward................................... ..... 17 Andesites of Maidu Volcanic Center....................... 17 Andesite of Turner Mountain........ 20 Rhyolite of Blue Ridge................................... 22 Dacites of Maidu Volcanic Center |  | Dong, Jin, Zhang, Shihong, Jiang, Ganqing, Li, Haiyan, Gao, Rui (2013) Greigite from carbonate concretions of the Ediacaran Doushantuo Formation in South China and its environmental implications. Precambrian Research, 225. 77-85 doi:10.1016/j.precamres.2012.03.010 | Journal (article/letter/editorial) | | com/locate/precamres Greigite from carbonate concretions of the Ediacaran Doushantuo Formation in South China...State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Beijing...Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, PR China Department of Geoscience...Geoscience, University of Nevada, Las Vegas, NV 89154-4010, USA a r t i c l e i n f o Article history:...precursor of pyrite in anoxic environments where the supply of reactive Fe outpaces that of sulfide (H2 |  | | Journal (article/letter/editorial) | | AND BULLETIN OF ECONOMIC Vo.. 48 THE SOCIETY M,Rca-A?RiI., THE GEOLOGIC OF GEOLOGISTS 1953...1953 CHARACTER PITCHBLENDE DONALD L. EVERHART OF No. 2 TYPICAL VEINS.* AND ROBERT J. WRIGHT. ...deposits Epochs of mineralization ............................................ Types of host rock .......throughout the world has been assembled. Thirteen of these deposits are described briefly and their features...features are summarizedand classified. Several of the deposits belong to Bastin's (2) nickel-cobalt-native |  | | Report (volume) | | GEOLOGICAL SURVEY BULLETIN 1410 A description of the major faults and mylonite zones that form the...OFFICE, WASHINGTON : 1976 UNITED STATES DEPARTMENT OF THE INTERIOR THOMAS S. KLEPPE, Secretary GEOLOGICAL...GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Main entry under...[551.8'7] 76-608000 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington....................... The Northern Boundary fault of the Boston basin................................ |  | | Journal (article/letter/editorial) | | Economic Geology BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS VOL. 106 September–October NO. 6 ... Epithermal Gold-Silver Deposits of the Hauraki Goldfield, New Zealand: An Introduction DAVID A. JOHN†...Mineral Deposits of the Hauraki Goldfield The five papers that follow describe diverse aspects of epithermal...goldfield on the Coromandel peninsula of the North Island of New Zealand (Fig. 1). The Hauraki goldfield...40-km-wide north-south–trending belt (Fig. 1C; Christie et al., 2007). Production from these deposits |  | | Journal (article/letter/editorial) | | Space Center, Houston, Texas 77058, USA tPresent address: Department of Mineralogy, The Natural History Museum...veins are a very well-known petrological feature of the chemically primitive CI1 carbonaceous chondrites...sulfate veins formed during the terrestrial residence of these heavily brecciated, porous stones. Reacting...be used as evidence of a late-stage oxidation event in the CI1 parent body, or of centimeter-scale fluid...scale and consist of a fine-grained phyllosilicate-rich matrix supporting magnetite, sulfides, sulfates |  | | Journal (article/letter/editorial) | | ©2020 Society of Economic Geologists, Inc. Economic Geology, v. 115, no. 3, pp.689–694 INTERESTING PAPERS...Economic Geology prints partial tables of contents of a number of journals as an information service. Please...to obtain copies of the journals or papers. If you cannot arrange to get copies of interesting papers...normal library sources, please contact the offices of the individual journals for assistance. Where possible...vein-type Au mineralization in the northern margin of the North China craton (China): An Indosinian oxidized |
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