Trondhjemites, Dacites, and Related Rocks, Volume 6

1st Edition

Editors: F. Barker
Hardcover ISBN: 9780444417657
eBook ISBN: 9781483289601
Imprint: Elsevier Science
Published Date: 1st January 1979
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Table of Contents


Preface


Contributors


Chapter 1. Trondhjemite: Definition, Environment and Hypotheses of Origin


Abstract


Trondhjemite: Definition


Major-Element Character


Occurrence


Hypotheses of Origin


Comments on Archean Gray Gneiss Complexes


Relation to Subduction


Acknowledgments


References


Chapter 2. A Review of the Mineralogy and Chemistry of Tertiary-Recent Dacitic, Latitic, Rhyolitic, and Related Salic Volcanic Rocks


Abstract


Introduction


Chemistry


Phenocryst Mineralogy


Interrelationships Between Mineralogy and Chemistry


Regional Variations of Dacitic and Rhyolitic Magmas


Acknowledgments


References


Appendices


Chapter 3. Some Trace Elements in Trondhjemites - Their Implications to Magma Genesis and Paleotectonic Setting


Introduction


Selection and Reliability of Trace Elements


Tectonic Environments and Trace Element Patterns


Models of Trondhjemite Genesis


Conclusions


References


Chapter 4. Strontium Isotope Geochemistry of Late Archean to Late Cretaceous Tonalites and Trondhjemites


Abstract


Introduction


Samples and Criteria


Data


Results


Conclusions


Acknowledgments


References


Chapter 5. Oceanic Plagiogranite Revisited


Abstract


Introduction


Keratophyre and Plagiogranite


Nomenclature


Petrography


Intergrowths


Chemistry


Summary


References


Chapter 6. Archean Gray Gneisses and the Origin of the Continental Crust: Evidence from the Godthåb Region, West Greenl


Description

Developments in Petrology, 6: Trondhjemites, Dacites, and Related Rocks focuses on the geology, geochemistry, and petrology of several kinds of trondhjemites, dacites, and genetically related rocks.

The selection first elaborates on the definition, environment, and hypotheses of origin of trondhjemite; a review of the mineralogy and chemistry of tertiary-recent dacitic, latitic, rhyolitic, and related salic volcanic rocks; and some trace elements in trondhjemites and their implications to magma genesis and paleotectonic setting. Discussions focus on tectonic environments and trace element patterns, selection and reliability of trace elements, interrelationships between mineralogy and chemistry, and regional variations of dacitic and rhyolitic magmas.

The publication then tackles strontium isotope geochemistry of late Archean to late Cretaceous tonalites and trondhjemites; Archean gray gneisses and the origin of the continental crust in West Greenland; and metamorphic development of early Archean tonalitic and trondhjemitic gneisses in Saglek Area, Labrador. The book examines the petrology, geochemistry, and origin of the Sparta quartz dioritetrondhjemite complex; reconnaissance geochemistry of Devonian island-arc volcanic and intrusive rocks in West Shasta District, California; and origin of the Twillingate trondhjemite in North-Central Newfoundland.

The selection is highly recommended for geologists and geochemists wanting to explore trondhjemites, dacites, and genetically related rocks.


Details

Language:
English
Copyright:
© Elsevier Science 1979
Published:
Imprint:
Elsevier Science
eBook ISBN:
9781483289601
Hardcover ISBN:
9780444417657

Reviews

@qu:...future workers on trondhjemite will find this volume indispensable. @source: Mineralogical Magazine


About the Editors

F. Barker Editor