Age Relations in High-grade Metamorphic Terrains
Author: H. R. Wynne-Edwards
Publisher:
Published: 1969
Total Pages: 244
ISBN-13:
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Author: H. R. Wynne-Edwards
Publisher:
Published: 1969
Total Pages: 244
ISBN-13:
DOWNLOAD EBOOKAuthor: H. R. Wynne-Edwards
Publisher:
Published:
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: Cees W. Passchier
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 219
ISBN-13: 3642760139
DOWNLOAD EBOOKAlthough there are numerous publications on the geology of high-grade gneiss terrains, few descriptions exist of how to map and carry out structural analysis in these terrains. Textbooks on structural geology concentrate on technIques appli cable to low-grade terrains. Geologists who have no experience of mapping high-grade gneisses are often at a loss as to how to apply techniques to high grade rocks that were developed for low to medium grade metamorphic terrains. Any study of deep crustal processes and their development through time should begin with examination of the primary data source - outcrops of high grade metamorphic terrains. We feel that the urge to apply advanced techniques of fabric analysis, petrology, geochemistry, isotope geochemistry and age deter mination to these rocks often results in brief sampling trips in which there is little, if any analysis of the structural and metamorphic history revealed by outcrop patterns. Many studies of the metamorphic petrology and geochemistry of high-grade gneiss terrains make ineffective use of available field data, often because the authors are unaware of structural complexities and of the ways to recognise and use them. This is unfortunate, because much data can be collected in the field at minimal cost that cannot easily, if at all, be obtained from material in the laboratory. The primary igneous or sedimentary nature of a rock, the relative age of intrusive veins, and the sequence of deformation that they under went, can usually best be determined by straightforward observation in the field.
Author:
Publisher:
Published: 1970
Total Pages: 1080
ISBN-13:
DOWNLOAD EBOOKAuthor: Geological Survey (U.S.)
Publisher:
Published: 1970
Total Pages: 792
ISBN-13:
DOWNLOAD EBOOKAuthor: Geological Survey (U.S.)
Publisher:
Published: 1977
Total Pages: 426
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1984
Total Pages: 182
ISBN-13:
DOWNLOAD EBOOKAuthor: Richard A. Volkert
Publisher:
Published: 1999
Total Pages: 98
ISBN-13:
DOWNLOAD EBOOKAuthor: Max D. Crittenden
Publisher: Geological Society of America
Published: 1980
Total Pages: 497
ISBN-13: 0813711533
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