THE previous simulating experiments show that many algae can greatly accumulate goldfrom solution under some conditions. Some other experiments further indicate that organ-ic matter and crude oil can also play an impo...THE previous simulating experiments show that many algae can greatly accumulate goldfrom solution under some conditions. Some other experiments further indicate that organ-ic matter and crude oil can also play an important role in gold geochemistry processes such asleaching, migration, reduction and precipitation. However, these biometallogeneses are展开更多
MOST previous studies of organic geochemistry in an ore deposit focus on the bitumen and kero-gen associated with ores and host rocks, not on that of fluid inclusions. However, organicmatter only in ore-forming fluids...MOST previous studies of organic geochemistry in an ore deposit focus on the bitumen and kero-gen associated with ores and host rocks, not on that of fluid inclusions. However, organicmatter only in ore-forming fluids is directly involved in metallogenesis. In this note, a series ofbiomarkers in hydrocarbon inclusions were identified through gas chromatography-mass spec-trometry (GC-MS). Comparison and contrast on extractable organic matter (EOM) was madeamong inclusions, ores and host rocks. Metallogenesis related to EOM was also discussed.展开更多
NORTHWEST Sichuan, a hotspot for geologic study, recently has yielded a series of large-medi-um scale gold deposits in the Upper Triassic. It is of great importance to determination andsubdivision of the Triassic Syst...NORTHWEST Sichuan, a hotspot for geologic study, recently has yielded a series of large-medi-um scale gold deposits in the Upper Triassic. It is of great importance to determination andsubdivision of the Triassic System and eventually to exact locating of the gold deposits.The Triassic Zagunao Formation in northwestern Sichuan has greatly changed in sensesince it was named in 1961. Now the Zagunao Formation only includes the metamorphic sand-stone with interlayers of slate lying between the Zhuwo Formation （T<sub>3</sub>） and the Zagashan For-展开更多
文摘THE previous simulating experiments show that many algae can greatly accumulate goldfrom solution under some conditions. Some other experiments further indicate that organ-ic matter and crude oil can also play an important role in gold geochemistry processes such asleaching, migration, reduction and precipitation. However, these biometallogeneses are
文摘MOST previous studies of organic geochemistry in an ore deposit focus on the bitumen and kero-gen associated with ores and host rocks, not on that of fluid inclusions. However, organicmatter only in ore-forming fluids is directly involved in metallogenesis. In this note, a series ofbiomarkers in hydrocarbon inclusions were identified through gas chromatography-mass spec-trometry (GC-MS). Comparison and contrast on extractable organic matter (EOM) was madeamong inclusions, ores and host rocks. Metallogenesis related to EOM was also discussed.
文摘NORTHWEST Sichuan, a hotspot for geologic study, recently has yielded a series of large-medi-um scale gold deposits in the Upper Triassic. It is of great importance to determination andsubdivision of the Triassic System and eventually to exact locating of the gold deposits.The Triassic Zagunao Formation in northwestern Sichuan has greatly changed in sensesince it was named in 1961. Now the Zagunao Formation only includes the metamorphic sand-stone with interlayers of slate lying between the Zhuwo Formation （T<sub>3</sub>） and the Zagashan For-
