Geology and Mapping of Granite Batholiths

cover.jpg......Page 1
front-matter.pdf......Page 2
The Geology and Mapping of Granite Batholiths......Page 4
Preface......Page 6
Contents......Page 10
Introduction......Page 13
2-Systems of Classification......Page 17
2.1.1 Lithological......Page 18
2.1.2 Major Element Geochemistry......Page 20
2.1.3.1 The Magnetite-Ilmenite Series......Page 21
2.2 Typological Systems......Page 22
2.3 Geochemical Tectonic Discriminants......Page 24
2.4 Comments on the Question of Source Related Nomenclatures......Page 26
2.5.3 Structural......Page 27
3.2 The Anatomy of Batholiths......Page 29
3.4 Granite Units, Super Units and Suites......Page 31
3.6 Contacts......Page 32
3.7.1 Equilibrium Textures......Page 33
3.7.2 Disequilibrium Textures......Page 35
3.8 Layering and Schlieren......Page 40
3.9 Residual Fluids......Page 44
3.10 Aplites Pegmatites and Granite Veins......Page 45
3.11 Enclaves in Granitoids......Page 46
3.12 The Question of Coeval Felsic and Mafic Magmas......Page 47
3.13 Mafic Microgranular Enclaves......Page 48
3.14 Restite......Page 50
3.15 High and Low Level Interaction of Felsic and Mafic Material......Page 53
3.16 Dark Margins at Igneous Contacts in Granites......Page 55
3.17 Mafic Dykes......Page 56
3.18 Emplacement of Plutons......Page 57
3.18.1 Stoping......Page 58
3.18.2 Diapirism and Ballooning......Page 59
3.18.3 Patterns of Pluton Emplacement Along Strike Slip Faults......Page 60
3.19 Deformation......Page 62
3.19.1 Field Recognition and Interpretation of Deformational Structures......Page 65
3.20 Core Complexes......Page 66
3.21 Vein Complexes......Page 67
3.22 Migmatites......Page 68
3.23 Metamorphic Aureoles......Page 70
3.24 Mineralisation......Page 71
3.24.1 Endogenous Mineralisation......Page 72
3.24.4 Breccias and Breccia Pipes......Page 73
3.24.7 Epithermal Veins......Page 74
3.25 Terrains in Relation to Granite Types and Suites......Page 75
3.26 Polarity......Page 76
4.1 Origin of the Concept......Page 78
4.2 The I and M-Type Family of Granitoids......Page 79
4.2.1 M-Types......Page 81
4.2.2 Cordilleran I-Types......Page 82
4.2 3 Post Collisional/Uplift-Molasse Associated I-Types......Page 84
4.3 The A-Type association......Page 86
4.3.1 A-Types......Page 87
4.4 The S-Type Family......Page 89
4.4.1 S-Types......Page 92
5.1 Reconaissance Mapping: Preparation for Field Work......Page 94
5.2 Use of the Description Sheet......Page 95
5.3 Mapping by Textures......Page 98
5.4 Field Procedures......Page 99
5.5 Mapping in Jungles......Page 100
5.6 Mapping in Deserts......Page 102
5.7 Collection of Samples......Page 103
6.1 Selecting Samples......Page 105
6.2.1 Classification......Page 106
6.2.2 Comparison......Page 107
6.4 Tectonic Setting......Page 108
6.5.1 The Potassium/Argon Method......Page 109
6.5.3 The Niodymum/Samarium Method......Page 110
6.5.4 The Uranium/Lead Method......Page 111
7.2 The Workplace......Page 112
7.3 The Portrayal of Granites on Geological Maps......Page 113
7.4 Writing the Report......Page 114
7.4.3 Isotopic......Page 115
7.5 Archiving the Data and Material......Page 116
8-The Granite Controversy and its Aftermath......Page 118
9-Epilogue......Page 125
References......Page 130
Index......Page 139