Overview

This textbook on structural geology aimed is primarily at the interpretation of high-grade gneiss terrains. The authors outline some of the more commonly seen structural features, suggest how they can be analyzed and interpreted, and explain which sampling techniques for petrology, geochemistry and geochronology will give the best results. The text is illustrated with line drawings and photographs, and features chapters on mapping in gneiss terrains, fabric development, interpretation of structures and fabrics, metamorphic history of gneiss terrains, geochemistry, isotope geochemistry and geochronology, and origin and evolution of high-grade gneiss terrains. A problem section includes illustrated examples of structures that are difficult to interpret and which allow readers to test their skills.

Full Product Details

Author:   Cees W. Passchier ,  John S. Myers ,  Alfred Kröner
Publisher:   Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Imprint:   Springer-Verlag Berlin and Heidelberg GmbH & Co. K
Edition:   Softcover reprint of the original 1st ed. 1990
Dimensions:   Width: 17.00cm , Height: 1.00cm , Length: 24.20cm
Weight:   0.320kg
ISBN:  

9783540530534

ISBN 10:   3540530533
Pages:   150
Publication Date:   30 November 1990
Audience:   College/higher education ,  Professional and scholarly ,  Undergraduate ,  Postgraduate, Research & Scholarly
Format:   Paperback
Publisher's Status:   Active
Availability:   Out of stock  
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Table of Contents

1 Introduction.- 2 Mapping in Gneiss Terrains.- 2.1 Introduction.- 2.2 General Problems.- 2.3 Working Method.- 2.4 Outcrop Analysis.- 2.5 What to Map.- 2.6 Types of Maps 7..- 2.7 Scheme of Events.- 2.8 Sampling.- 3 Fabric Development in Gneiss Terrains.- 3.1 Introduction.- 3.2 The Geometry of Ductile Flow in Rocks.- 3.2.1 Coaxial or Non-Coaxial Flow.- 3.2.2 Effects of Progressive Deformation.- 3.3 Fabric Elements.- 3.3.1 Granoblastic Fabrics.- 3.3.2 Shape and Mineral Fabrics.- 3.3.3 Layering.- 3.3.4 Augen Structures in Gneiss.- 3.4 Shear Zones in High-Grade Conditions.- 3.4.1 Introduction.- 3.4.2 Development of Fabrics in Shear Zones.- 3.4.3 Isoclinal Folds in Shear Zones.- 3.5 Fabric Distribution in Shear Zones.- 3.5.1 Introduction.- 3.5.2 The Semi-Brittle Deformation Regime.- 3.5.3 Cataclasite and Pseudotachylyte.- 3.5.4 The Transition Zone.- 3.5.5 Relation of Brittle and Ductile Fault Rocks in Gneiss Terrains.- 4 Interpretation of Structures and Fabrics.- 4.1 The Inadequate Memory of Rocks.- 4.2 Igneous or Sedimentary Origin of Gneisses.- 4.2.1 General Guidelines.- 4.2.2 Apparent Sedimentary Structures.- 4.3 Assessment of Strain Intensity.- 4.4 Shear Zones.- 4.4.1 Recognition of Shear Zones.- 4.4.2 Deformation in Shear Zones.- 4.4.3 Determining Movement Direction Using Lineations.- 4.4.4 Determining Movement Direction in Absence of Lineations.- 4.4.5 Shear Sense Criteria.- 4.5 Folds and Boudins.- 4.6 Overprinting Relations Involving Folds and Boudins.- 4.6.1 Introduction.- 4.6.2 Fold Interference.- 4.6.3 Deformed Vein Sets.- 4.7 Overprinting Relations Involving Intrusions.- 4.7.1 General Guidelines.- 4.7.2 Intersection Geometry of Planar Intrusions.- 4.7.3 Interaction of Dykes and Shear Zones.- 4.7.4 Reactivated Shear Zones.- 4.7.5 Partial Melt Veins.- 4.8 Outcrop Surface and Fabric Patterns.- 4.8.1 General Problems.- 4.8.2 Lineations and Foliation Traces.- 5 Metamorphic History of Gneiss Terrains.- 5.1 Introduction.- 5.2 Metamorphic History.- 5.3 Fabric Evidence for Metamorphic History.- 5.4 Metamorphic Conditions.- 5.4.1 Introduction.- 5.4.2 Mineral Assemblages in High-Grade Metamorphism.- 5.4.3 Mineral Assemblages in High to Medium Grade Retrogression.- 5.4.4 Mineral Assemblages in Low-Grade Retrogression.- 5.5 Sites to Study Retrogression Fabrics.- 5.6 Relative Dating of Metamorphic Events.- 5.7 Isograd Patterns.- 5.8 Geothermobarometry.- 6 Geochemistry, Isotope Geochemistry and Geoehronology: Application to Field Studies.- 6.1 Introduction.- 6.2 Geochemistry.- 6.3 Isotope Geochemistry.- 6.4 Geochronology.- 6.4.1 Introduction.- 6.4.2 Sm-Nd Method of Dating.- 6.4.3 U-Pb Dating of Zircons.- 7 Origin and Evolution of High-Grade Gneiss Terrains.- 7.1 Introduction.- 7.2 Two Kinds of Gneiss Terrain.- 7.3 Crustal Structure of Gneiss Terrains.- 7.4 Origin and Evolution of High-Grade Gneiss Terrains.- 8 Problem Section.- 8.1 Introduction.- 8.2 Informative Misinterpretations.- 8.3 Problems.- 9 References.- 10 Index.

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