مورد إلكتروني
Geochemistry of gold deposits in the Abitibi greenstone belt.
| العنوان: | Geochemistry of gold deposits in the Abitibi greenstone belt. |
|---|---|
| بيانات النشر: | Montreal Canadian Institute of Mining and Metallurgy 1983 |
| تفاصيل مُضافة: | Kerrich R. |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The volume is in 5 sections, covering the metal inventory of lode gold deposits, a synthesis of data from deposits with a chemical sedimentary component, a synthesis of data from vein deposits, characteristics of the hydrothermal fluids and alteration - a summary of the geological evidence, and models. The deposits appear to form during the discharge of low-Cl, CO2-rich aqueous fluids of metamorphic origin, early on at the seafloor in a tensile crustal regime and later at depth in a compressive one. This outgassing of volatile-laden volcanic sequences under conditions of burial and crustal heating is part of a hydration-dehydration cycle that proceeds continuously during development of the greenstone belt. It is suggested that rift environments with high heat fluxes are appropriate for efficient gold concentration. The book concludes with a list of over 200 references. The volume is in 5 sections, covering the metal inventory of lode gold deposits, a synthesis of data from deposits with a chemical sedimentary component, a synthesis of data from vein deposits, characteristics of the hydrothermal fluids and alteration - a summary of the geological evidence, and models. The deposits appear to form during the discharge of low-Cl, CO2-rich aqueous fluids of metamorphic origin, early on at the seafloor in a tensile crustal regime and later at depth in a compressive one. This outgassing of volatile-laden volcanic sequences under conditions of burial and crustal heating is part of a hydration-dehydration cycle that proceeds continuously during development of the greenstone belt. It is suggested that rift environments with high heat fluxes are appropriate for efficient gold concentration. The book concludes with a list of over 200 references. |
| مصطلحات الفهرس: | ABITIBI, ARCHAEAN, CANADA, CARBON DIOXIDE, CARBONATE ORES, CARBONATISATION, DICKENSON, DOME, EAST MALARTIC, ECONOMIC GEOLOGY, GEOCHEMISTRY, GOLD, GREENSTONE BELTS, HOLLINGER, HYDROTHERMAL ALTERATION, KERR-ADDISON, LAMAQUE, METAMORPHISM, MINERAL DEPOSITS, MINERALISING FLUIDS, MODELLING, NORTHWEST TERRITORIES, ONTARIO, ORE GENESIS, QUEBEC, SEDIMENTARY DEPOSITS, SHEAR ZONES, TECTONIC SETTING, VEIN DEPOSITS, VOLCANIC ROCKS, YELLOWKNIFE, text |
| URL: | |
| الإتاحة: | Open access content. Open access content |
| ملاحظة: | und |
| أرقام أخرى: | UKMMM oai:icon.iom3.org:127239 1309255343 |
| المصدر المساهم: | INSTITUTE OF MATS MINERALS & MINING From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1309255343 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |