Barker Trondhjemites, Dacites, and Related Rocks

1. Auflage 2013
ISBN: 978-1-4832-8960-1
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 676 Seiten, Web PDF

Trondhjemites, Dacites, and Related Rocks

Autoren/Hrsg.

Barker, F.

Inhaltsverzeichnis

1;Front Cover;1
2;Trondhjemites, Dacites, and Related Rocks;4
3;Copyright Page;5
4;Table of Contents;10
5;Preface;6
6;Contributors;8
7;CHAPTER 1. TRONDHJEMITE: DEFINITION, ENVIRONMENT AND HYPOTHESES OF ORIGIN;18
7.1;Abstract;18
7.2;Trondhjemite: definition;19
7.3;Major-element character;22
7.4;Occurrence;24
7.5;Hypotheses of origin;25
7.6;Comments on Archean gray gneiss complexes;26
7.7;Relation to subduction;27
7.8;Acknowledgments;28
7.9;References;28
8;CHAPTER 2. A REVIEW OF THE MINERALOGY AND CHEMISTRY OF TERTIARY-RECENT DACITIC, LATITIC, RHYOLITIC, AND RELATED SALIC VOLCANIC ROCKS;30
8.1;Abstract;30
8.2;Introduction;31
8.3;Chemistry;54
8.4;Phenocryst mineralogy;65
8.5;Interrelationships between mineralogy and chemistry;86
8.6;Regional variations of dacitic and rhyolitic magmas;92
8.7;Acknowledgments;97
8.8;References;97
8.9;Appendices;129
9;CHAPTER 3. SOME TRACE ELEMENTS IN TRONDHJEMITES - THEIR IMPLICATIONS TO MAGMA GENESIS AND PALEOTECTONIC SETTING;140
9.1;Introduction;140
9.2;Selection and reliability of trace elements;140
9.3;Tectonic environments and trace element patterns;141
9.4;Models of trondhjemite genesis;144
9.5;Conclusions;148
9.6;References;148
10;CHAPTER 4. STRONTIUM ISOTOPE GEOCHEMISTRY OF LATE ARCHEAN TO LATE CRETACEOUS TONALITES AND TRONDHJEMITES;150
10.1;Abstract;150
10.2;Introduction;150
10.3;Samples and criteria;152
10.4;Data;152
10.5;Results;155
10.6;Conclusions;161
10.7;Acknowledgments;161
10.8;References;162
11;CHAPTER 5. OCEANIC PLAGIOGRANITE REVISITED;166
11.1;Abstract;166
11.2;Introduction;166
11.3;Keratophyre and plagiogranite;167
11.4;Nomenclature;168
11.5;Petrography;168
11.6;Intergrowths;170
11.7;Chemistry;174
11.8;Summary;182
11.9;References;182
12;CHAPTER 6. ARCHEAN GRAY GNEISSES AND THE ORIGIN OF THE CONTINENTAL CRUST: EVIDENCE FROM THE GODTHAB REGION, WEST GREENLAND;186
12.1;Abstract;186
12.2;Introduction;186
12.3;The Nuk gneisses;188
12.4;Origin of the Nuk magmas;201
12.5;Comparison with younger tectonic environments;206
12.6;A model for the generation of the Nuk gneisses;208
12.7;The Amitsoq gneisses;210
12.8;Conclusions;215
12.9;Acknowledgments;217
12.10;References;217
13;CHAPTER 7. METAMORPHIC DEVELOPMENT OF EARLY ARCHEAN TONALITIC AND TRONDHJEMITIC GNEISSES: SAGLEK AREA, LABRADOR;222
13.1;Abstract;222
13.2;Introduction;223
13.3;Geological setting;224
13.4;Geological relations in the Saglek area;226
13.5;Meta-plutoni e rocks: the Uivak gneisses;229
13.6;Supracrustal rocks;235
13.7;Petrology;238
13.8;Geochemistry;249
13.9;Discussion and origin of the Uivak gneisses;278
13.10;Implications for Archean crustal development;281
13.11;Acknowledgments;282
13.12;References;282
14;CHAPTER 8. GEOCHEMISTRY OF ARCHEAN TRONDHJEMITIC AND TONALITIC GNEISSES FROM SCOTLAND AND EAST GREENLAND;292
14.1;Abstract;292
14.2;Introduction;293
14.3;Geochemistry;294
14.4;Discussion;307
14.5;References;313
15;CHAPTER 9. THE ROLE OF TONALITIC AND TRONDHJEMITIC ROCKS IN THE CRUSTAL DEVELOPMENT OF SWAZILAND AND THE EASTERN TRANSVAAL, SOUTH AFRICA;318
15.1;Introduction;318
15.2;General geologic setting of Swaziland and eastern Transvaal;318
15.3;Geology of the tonalitic-trondhjemitic suites;322
15.4;Geochemistry of the tonali te-trondhjemite suites;324
15.5;Origin of the tonalite-trondhjemite suites;329
15.6;Summary and discussion;333
15.7;References;337
16;CHAPTER 10. PETROCHEMISTRY AND TECTONIC SETTING OF PLUTONIC ROCKS OF THE SUPERIOR PROVINCE IN MANITOBA;340
16.1;Abstract;340
16.2;Introduction;340
16.3;Terminology;341
16.4;Regional geology;342
16.5;Regional geophysics;348
16.6;Age of plutonism;349
16.7;Petrochemistry;351
16.8;Tectonic setting;370
16.9;Summary and conclusions;372
16.10;Acknowledgments;375
16.11;References;375
17;CHAPTER 11. THE OXYGEN-ISOTOPE GEOCHEMISTRY OF ARCHEAN GRANITOIDS;380
17.1;Abstract;380
17.2;Introduction;381
17.3;Analytical methods;382
17.4;The oxygen isotopie composition of Archean granitoids - a review;383
17.5;d18o results for granitoids from northwestern Ontario;385
17.6;Conclusions;409
17.7;Acknowledgments;411
17.8;References;411
18;CHAPTER 12. ARCHEAN TRONDHJEMITES OF THE SOUTHWESTERN BIG HORN MOUNTAINS, WYOMING: A PRELIMINARY REPORT;418
18.1;Abstract;418
18.2;Introduction;418
18.3;Geology;420
18.4;Ages of the E-1 and E-2 events;422
18.5;Major- and minor-element abundances;424
18.6;Acknowledgments;431
18.7;References;431
19;CHAPTER 13. FOUR LOW-K SILICEOUS ROCKS OF THE WESTERN USA;432
19.1;Introduction;432
19.2;Webb Canyon Gneiss;432
19.3;Rocks of Wilson Creek area, Wind River Mountains;434
19.4;Trondhjemite, Rigging area, Idaho;440
19.5;Jurassic plutons, Trinity Alps, Klamath Mountains;444
19.6;Acknowledgments;449
19.7;References;449
20;CHAPTER 14. PETROGENESIS OF HIGH PRESSURE TRONDHJEMITIC LAYERS IN ECLOGITES AND AMPHIBOLITES FROM SOUTHERN MASSIF CENTRAL, FRANCE;452
20.1;Abstract;452
20.2;Introduction;452
20.3;Geological setting and field relation;454
20.4;Petrography;454
20.5;Chemistry;461
20.6;Origin;466
20.7;Origin of the kyanite-zoisite-garnet-quartz-oligoclase (matrix and corona) assemblage;469
20.8;Conclusion;472
20.9;Acknowledgments;473
20.10;References;473
21;CHAPTER 15. TWO CONTRASTING TRONDHJEMITE ASSOCIATIONS FROM TRANSPORTED OPHIOLITES IN WESTERN NEWFOUNDLAND: INITIAL REPORT;482
21.1;Abstract;482
21.2;Introduction;482
21.3;Interpretation of the geology;485
21.4;Leucocratic rocks in the Little Port Complex;486
21.5;Geology of the Bay of Islands Complex;489
21.6;Leucocratic rocks in the Bay of Islands Complex;490
21.7;Chemistry of the trondhjemites;492
21.8;Origin of the trondhjemites and related rocks;498
21.9;Summary;501
21.10;Acknowledgments;501
21.11;References;501
22;CHAPTER 16. ORIGIN OF THE TWILLINGATE TRONDHJEMITE, NORTH-CENTRAL NEWFOUNDLAND: PARTIAL MELTING IN THE ROOTS OF AN ISLAND ARC;506
22.1;Abstract;506
22.2;Introduction;506
22.3;Geological setting;508
22.4;Petrography;510
22.5;Chemistry;515
22.6;Petrogenesis;521
22.7;Acknowledgments;529
22.8;References;530
23;CHAPTER 17. GEOCHEMISTRY OF THE TYPE TRONDHJEMITE AND THREE ASSOCIATED ROCKS, NORWAY;534
23.1;Abstract;534
23.2;Introduction and age relations;534
23.3;Petrography;536
23.4;Minor elements and oxygen and strontium isotopes;541
23.5;Acknowledgments;545
23.6;References;545
24;CHAPTER 18. RECONNAISSANCE GEOCHEMISTRY OF DEVONIAN ISLAND-ARC VOLCANIC AND INTRUSIVE ROCKS, WEST SHASTA DISTRICT, CALIFORNIA;548
24.1;Abstract;548
24.2;Introduction;548
24.3;Descriptions of rock units;550
24.4;Major and minor elements;552
24.5;Conclusions;560
24.6;Acknowledgments;560
24.7;References;560
24.8;Appendix;562
25;CHAPTER 19. PETROLOGY, GEOCHEMISTRY AND ORIGIN OF THE SPARTA QUARTZ DIORITETRONDHJEMITE COMPLEX, NORTHEASTERN OREGON;564
25.1;Abstract;564
25.2;Introduction;564
25.3;Geologic setting;565
25.4;Field relationships;566
25.5;Petrography;569
25.6;Whole-rock chemistry;570
25.7;Mineral chemistry;578
25.8;Discussion;580
25.9;Conclusions;591
25.10;Acknowledgments;592
25.11;References;592
26;CHAPTER 20. L0W-K2O DACITE FROM THE TONGA-KERMADEC ISLAND ARC: PETROGRAPHY, CHEMISTRY, AND PETROGENESIS;598
26.1;Introduction;598
26.2;Petrography and nomenclature;598
26.3;Chemical composition;607
26.4;Petrogenesis;612
26.5;Tongan dacite and plate tectonics;614
26.6;References;616
27;CHAPTER 21. DACITE OF THE LESSER ANTILLES;618
27.1;Abstract;618
27.2;Background;618
27.3;Field occurrence;621
27.4;Petrography;629
27.5;Geochemistry;637
27.6;Petrogenesis;641
27.7;References;643
28;CHAPTER 22. MIOCENE LOW-K DACITES AND TRONDHJEMITES OF FIJI;646
28.1;Abstract;646
28.2;High-Si dacites of the Undu Volcanic Group;648
28.3;Introduction;646
28.4;High-Si dacites of the Wainimala Group;649
28.5;Tholo Group trondhjemites;650
28.6;Chemical composition;654
28.7;Discussion;660
28.8;Acknowledgments;662
28.9;References;662
28.10;Appendix;665
29;Subject Index;668