Keywords:
Geology.
;
Geochemistry.
;
Mineralogy.
;
Petrology.
;
Geology.
;
Geochemistry.
;
Mineralogy.
;
Petrology.
Description / Table of Contents:
Chapter 1. Introduction -- Chapter 2. Mining and the nature of gold deposits -- Chapter 3. Data to processes, examples, and discovery -- Chapter 4. Provinciality of goldfields -- Chapter 5. Enrichment of gold above background -- Chapter 6. Segregation of gold from base metals -- Chapter 7. Timing of deposit formation -- Chapter 8. Ore fluid types as recorded in fluid inclusions -- Chapter 9. Commonality and diversity: both need explanation. Chapter 10. Magmatic processes that lead to gold-only deposits -- Chapter 11. Fluids in the earth’s crust -- Chapter 12. Alteration in gold-only deposits -- Chapter 13. Case study: the formation of a giant goldfield: Kalgoorlie, Western Australia -- Chapter 14. Hydrothermal transport of gold -- Chapter 15. Metamorphic processes leading to gold-only deposits -- Chapter 16. Modification of deposits at high temperature -- Chapter 17. Formation and modification of deposits at lower temperatures -- Chapter 18. Carlin, Witwatersrand and some other gold-only examples -- Chapter 19. Gold-plus Copper-Gold deposits -- Chapter 20. Discoveries and the role of science in the Yilgarn goldfields of Western Australia -- Chapter 21. Discovery of Fosterville Deeps, Victorian Gold Province: long term science. Chapter 22. Summary and conclusions.
Abstract:
This book is the first systematic treatise of available data and view-points obtained from geological and geochemical studies of the Mo deposits in Qinling Orogen, China. Qinling Orogen has a minimum reserve of 8.7 Mt Mo, ranking the largest molybdenum province both in China and the world. Incorporating all known Mo deposit types in the world, it presents extensive studies of Mo deposits of world-class and unusual types within tectonic settings. The Qinling Orogen was finally formed during continental collision between Yangtze and North China cratons, following the Triassic closure of the northernmost paleo-Tethys. It hosts 49 Mo deposits formed in seven mineralization events since 1850 Ma, with all the world-class deposits being formed during 160-105 Ma, coeval with collisional orogeny. These deposits are assigned to magmatic and metamorphic hydrothermal classes. The magmatic hydrothermal class includes porphyries, skarns, and intrusion-related veins (carbonatite, fluorite and quartz). The porphyry Mo systems in Qinling Orogen are predominated by Dabie-type formed in continental collision setting, followed by Endako- and Climax-types formed in continental arcs and rifts, respectively. The metamorphic hydrothermal Mo deposits are only reported in Qinling Orogen, and thus a new crustal continuum model for the orogenic class mineral systems is proposed. A scientific linkage between ore geology and fluid inclusions is introduced and verified both by theory and case studies. This is the first research book comprehensively displaying continental collision metallogeny. This literature will benefit both Western and Chinese mineral explorers and miners, as well as research scientists and students.
Type of Medium:
Online Resource
Pages:
XVIII, 842 p. 1 illus.
,
online resource.
Edition:
1st ed. 2022.
ISBN:
9789811648717
Series Statement:
Modern Approaches in Solid Earth Sciences, 22
URL:
https://doi.org/10.1007/978-981-16-4871-7
DOI:
10.1007/978-981-16-4871-7
DDC:
551
Language:
English
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