Kooperativer Bibliotheksverbund

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Format: VIII, 254 S , Ill., maps , 28 cm

ISBN: 0813722454

Series Statement: Annual meeting of the Northeastern Section of the Geological Society of America 22[,Teilausg.]

Note: Papers from symposium convened at the Twenty-second Annual Meeting of the Northeastern Section of the Geological Society of America, Pittsburgh, Pa., Mar. 4-7, 1987

Language: English

Keywords: USA ; Geologie ; Plattentektonik ; Stratigraphie ; Peninsula Avalon ; Terrane ; Tektonik ; Terrane ; USA ; Geologie ; Plattentektonik ; Stratigraphie ; Peninsula Avalon ; Terrane ; Tektonik ; Terrane ; Konferenzschrift ; Aufsatzsammlung ; Konferenzschrift

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Format: V, 463 S. , Ill., graph. Darst., Kt. + 1 Kt.-Beil.

ISBN: 0813722535

Series Statement: Special paper / Geological Society of America 253

Language: English

Subjects: Geography

Keywords: Geologie ; USA ; Geologie ; Aufsatzsammlung

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Format: VI, 236 S. , Kt., graph. Darst. , 3 Kt.-Beil.

ISBN: 0813722926

Series Statement: Special papers / the Geological Society of America 292

Note: Includes bibliographical references and index

Language: English

Keywords: Kalifornien ; Seismotektonik ; Küstenkordillere ; Aufsatzsammlung

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Format: VII, 364 Seiten , Illustrationen, graphische Darstellungen, Karten , 28 cm

ISBN: 0-8137-2246-2

Series Statement: Special paper / The Geological Society of America 246

Note: Contains some of the papers presented at the national meeting of the Geological Society of America held in Phoenix, Ariz., Oct. 26-29, 1987 , Preface Introduction Magmatic and hydrothermal processes in ore-bearing systems Judith L. Hannah and Holly J. Stein Theoretical and Experimental Studies Theoretical contraints on the chemistry of the magmatic aqueous phase Philip A. Candela Partitioning of F and Cl between magmatic hydrothermal fluids and highly evolved granitic magma James D. Webster and John R. Holloway Internal differentiation of rare-element pegmatites; A synthesis of recent research David London Fluorine-rich Granite-Rhyolite Systems The petrogenetic and metallogenetic significance of topaz granite from the southwest England orefield D.A.C. Manning and P. I. Hill The role of fluorine in the petrogenesis of magmatic segregations in the SL Francois volcano-plutonic terrane, southeastern Missouri P. I. Nabelek and C. Russ-Nabelek Melt inclusions in the quartz phenocrysts of rhyolites from Topaz and Keg Mountains, Thomas Range, Utah Christine Payette and Robert F. Martin Rare-metal enriched peralumininous rhyolites in a continental arc, Sierra Bianca area, Trans-Pecos Texas; Chemical modification by vapor-phase crystallization Jonathan G. Price, Jeffrey N. Rubin, Christopher D. Henry, Thomas L. Pinkston, Steven W. Tweedy, and David W. Koppenaal Tin and Tungsten-bearing Granitoids Comparative petrologic evolution of the Sn and W granites of the Fairbanks-Circle area, interior Alaska R. J. Newberry, L. E. Bums, S. E. Swanson, and T. E. Smith Mineralogical variation as a guide to the petrogenesis of the tin granites and related skarns, Seward Peninsula, Alaska Samuel E. Swanson, Rainer J. Newberry, Gary A. Coulter, and Thomas M. Dyehouse Geochemistry of highly fractionated I- and S-type granites from the tin-tungsten province of western Tasmania W. N. Sawka, M. T. Heizler, R. W. Kistler, and B. W. Chappell Genesis and fluid evolution of the East Kemptville greisen-hosted tin mine, southwestern Nova Scotia, Canada Jean M. Richardson, Keith Bell, David H. Watkinson, and John Blenkinsop Mica chemistry as an indicator of oxygen and halogen fugacities in the CanTung and other W-related granitoids in the North American Cordillera W. T. van Middelaar and J. D. Keith The Black Pearl mine, Arizona; Wolframite veins and stockscheider pegmatite related to an albitic stock Christopher Schmitz and Donald M. Burt Tin-bearing Rhyolites, Black Range, New Mexico Genesis of the rhyolite-hosted tin occurrences in the Black Range, New Mexico, as indicated by stable isotope studies Robert O. Rye, John L. Lufkin, and Michael D. Wasserman Eruptive fountains of silicic magma and their possible effects on the tin content of fountain-fed lavas, Taylor Creek Rhyolite, New Mexico Wendell A. Duffield Origin of Taylor Creek rhyolite magma, Black Range, New Mexico, based on Nd-Sr isotope studies Cadi Reece, Joaquin Ruiz, Wendell A. Duffield, and P. Jonathan Patchett Other Pre-Tertiary Granitoid Examples Petrogenesis of the Proterozoic rapakivi granites of Finland Ilmari Haapala and O. Tapani Rämö The Topsails igneous suite, western Newfoundland; Fractionation and magma mixing in an "orogenic" A-type granite suite Joseph B. Whalen and Kenneth L. Currie Anorogenic, bimodal emplacement of anorthositic, charnockitic, and related rocks in the Adirondack Mountains, New York James McLelland and Philip Whitney Geochemistry and metallogeny of Arizona peraluminous granitoids with reference to Appalachian and European occurrences Anne L. Shaw and John M. Guilbert Index

In: Special paper / The Geological Society of America, 246

Additional Edition: eng

Language: English

Keywords: Aufsatzsammlung

URL: http://digitale-objekte.hbz-nrw.de/storage/2009/02/14/file_17/2815873.pdf

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Format: xi, 316 Seiten , Diagramme, Karten

ISBN: 9780226506692 , 9780226506722

Note: Aus der Einleitung: "This book is an expanded reprint of the proceedings of a short course entitled "Conservation Paleobiology: Using the Past to Manage for the Future" that was sponsored by the Paleontological Society. The short course was convened at the annual meeting of the Geological Society of America in Portland, Oregon, in 2009."

Additional Edition: Erscheint auch als Online-Ausgabe ISBN 978-0-226-50686-9

Language: English

Keywords: Paläobiologie ; Palökologie ; Aufsatzsammlung ; Konferenzschrift

URL: Inhaltsverzeichnis

Author information: Dietl, Gregory P.

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Format: 211 Seiten , Illustrationen, graphische Darstellungen

ISBN: 0-8137-2180-6

Series Statement: Special paper / The Geological Society of America 180

Note: Introduction / Charles E. Chapin and Wolfgang E. Elston References cited Ash-flow magmatism / Robert L. Smith Abstract Introduction Volumes of ash-flow sheets Size of magma chambers Zoned magma chambers Crater Lake, Oregon Bandelier Tuff, New Mexico SiO₂ and phenocryst variation in ash-flow sheets Periodicity-volume-composition relationships Discussion of model Summary and conclusions Acknowledgments References cited Cooling units and composite sheets in relation to caldera structure / Robert L. Christiansen Abstract Introduction Examples of ash-flow-caldera relations Mazama eruption and Crater Lake caldera Bandelier Tuff and Valles-Toledo calderas Thirsty Canyon Tuff and Black Mountain caldera Timber Mountain-Oasis Valley caldera complex Yellowstone Plateau volcanic field General pattern of ash-flow-caldera relations Acknowledgments References cited The Bishop Tuff: Evidence for the origin of compositional zonation in silicic magma chambers / Wes Hildreth Abstract Introduction Eruptive sequence Major units Units of uncertain correlation Summary of eruptive sequence Eruptive temperatures Accuracy and precision of T-fₒ₂ data Mineralogy Fe-Ti oxides Quartz Sanidine Plagioclase Biotite Pyroxenes Allanite Zircon Apatite Pyrrhotite Whole-rock chemistry Major elements Trace elements Compositional gaps Origin of the compositional zonation Crystal settling Assimilation Basaltic underplating Liquid immiscibility Progressive partial melting Trace elements during partial melting Convection-driven thermogravitational diffusion Lines of evidence Concluding remarks Acknowledgments References cited Rare-earth-element content of some highly differentiated ash-flow tuffs and lavas / Donald C. Noble, Ward L. Rigot, and Harry R. Bowman Abstract Introduction Specimens studied and methods of chemical analysis Results and discussion Acknowledgments References cited Geochemistry of the Los Chocoyos Ash, Quezaltenango Valley, Guatemala / William I. Rose, Jr., Norman K. Grant, and John Easter Abstract Introduction Field description Geochemistry Mineralogy and mineral chemistry Sr-isotope data Modeling of crystal fractionation Time required for crystal fractionation Conclusions Acknowledgments Appendix 1. Analytical methods References cited Geochemical correlation of genetically related rhyolitic ash-flow and air-fall ashes, central and western Guatemala and the equatorial Pacific / Gregory A. Hahn, William I. Rose, Jr., and Thomas Meyers Abstract Introduction Previous investigations of chemical fingerprinting The Los Chocoyos Ash and the stratigraphic sequence of the San Cristobal Group Characteristics of the ash-flow member Sample acquisition and preparation Trace-element analyses Chemical correlation Lateral chemical variations Source of the Los Chocoyos Ash Age of the Los Chocoyos Ash Conclusions Acknowledgments References cited Ignimbrites of the Sierra Madre Occidental and their relation to the tectonic history of western Mexico / Fred W. McDowell and Stephen E. Clabaugh Abstract Introduction Volcanic stratigraphy of the Sierra Madre Occidental Pre-Cretaceous volcanic rocks Lower volcanic complex Unconformity between the igneous sequences Upper volcanic supergroup Calderas of the upper volcanic supergroup Structure of the Sierra Madre Occidental Chemistry Tectonic relationships Acknowledgments References cited Emplacement of pyroclastic flows: A review / Michael F. Sheridan Abstract Introduction Eruptions Observed pyroclastic flows Theoretical eruption models Mobility Topographic barriers Energy line Deposits Morphology Depositional sequence Textures Large clasts Deflation Compositional variation Welded peralkaline ignimbrites Emplacement temperatures Models Fluidization Speculation Summary Acknowledgments References cited Primary and secondary flow structures in ash-flow tuffs of the Gribbles Run paleovalley, central Colorado / Charles E. Chapin and Gary R. Lowell Abstract Introduction Paleovalleys and the Wall Mountain Tuff Primary flow structures Gas cavities (lenticules) Lineation Foliation Primary folds Rotated lithic fragments Imbricated crystals Secondary now structures Secondary folds and growth faults Tension cracks Miscellaneous structures Steam spiracles Conclusions Acknowledgments References cited Welded air-fall tuffs / R.S.J. Sparks and J. V. Wright Abstract Introduction Field relationships Santorini, Greece The 1875 Askja welded tuffs, Iceland Other examples Petrology and chemistry Grain-size studies Santorini welded tuffs Askja welded tuff Compaction and welding Strain, bulk density, and porosity measurements Results for Santorini welded tuffs Results for Askja welded tuff Discussion Acknowledgments References cited Globule ignimbrite of Mount Suswa, Kenya / R. L. Hay, W. Hildreth, and R. N. Lambe Abstract Introduction Scope and purpose of study Geologic setting and previous work Description and field relationships Ignimbrite petrography Vitric materials Crystals and rock fragments Devitrification and gas-phase crystallization Low-temperature alteration Nature of lower ignimbrite sheet Nature of the magma Chemical composition Temperature and viscosity Emplacement of ignimbrite and origin of globules Acknowledgments References cited A model of pyroclastic surge / K. H. Wohletz and M. F. Sheridan Abstract Introduction Terminology Objectives and methods of study Deposits Bed forms Locations Results Pyroclastic-surge facies Discussion and conclusions Development of bed forms Reconstruction of the surge cloud A model of pyroclastic surge: Its fluidization and deflation Acknowledgments References cited Significance of the flattening of pumice fragments in ash-flow tuffs / Donald W. Peterson Abstract Introduction Pumice fragments in the Apache Leap Tuff Recognition and description of pumice fragments Flattening of the pumice Applications of the flattening studies Recognition of cooling units Implications of extreme flattening Determination of stratigraphic level and fault displacement Commercial application of flattening ratios Determination of the degree of welding Pumice flattening as a possible guide to relative temperature of emplacement and rate of accumulation Conclusions Acknowledgments References cited Ash-flow sheets and calderas: Their genetic relationship to ore deposits in Nevada / Edwin H. McKee Abstract Introduction Metal deposits in volcanic-tectonic systems Resurgent cauldrons Geologic setting Parameters of study Distribution of mines and ash-flow sheets Distribution of mines and calderas Discussion Acknowledgments References cited

In: Special paper / The Geological Society of America, 180

Additional Edition: eng

Language: English

Keywords: Aufsatzsammlung

URL: http://digitale-objekte.hbz-nrw.de/storage/2008/12/16/file_18/2691471.pdf

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Format: VI, 103 S. , Ill.

ISBN: 0813722314

Series Statement: Geological Society of America: Special paper 231

Language: Undetermined

Keywords: Appalachen ; Ultrabasit ; Aufsatzsammlung ; Konferenzschrift

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Format: VIII, 643 S.

Series Statement: Centennial special volume

Language: Undetermined

Subjects: Geography

Keywords: Nordamerika ; Geomorphologie ; Aufsatzsammlung

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Format: VIII, 381 S , Ill., graph. Darst., Kt , 2 Kt

ISBN: 0813723337

Series Statement: Special papers / the Geological Society of America 333

Note: Literaturangaben

Language: English

Keywords: Kalifornien ; Känozoikum ; Historische Geologie ; Nevada ; Geologie ; Becken ; Tektonik ; Senkung ; Death Valley ; Strukturgeologie ; Sedimentationsbecken ; Beckensediment ; Stratigraphie ; Sedimentologie ; Death Valley Fault ; Faltentektonik ; Death Valley ; Sedimentationsbecken ; Känozoikum ; Konferenzschrift ; Aufsatzsammlung ; Konferenzschrift

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Format: VI, 273 S. , Ill., graph. Darst.

ISBN: 9780813724195

Series Statement: Geological Society of America: Special paper 419

Note: Includes bibliographical references

Language: English

Keywords: Subduktion ; Geochronologie ; Hochdruckmetamorphose ; Geothermometrie ; Terrane ; Aufsatzsammlung ; Festschrift

URL: Inhaltsverzeichnis

Author information: Ernst, Wallace G. 1931-