The Coupling Relationship between Metallization and Hydrocarbon Accumulation in Sedimentary Basins
- 责任者：Gu Xuexiang (State Key Laboratory of Geological Processes and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zhang Yongmei
- 刊名：Earth Science Frontiers
- 出版年：2010
- 卷期：17(2)
- 关键词：金属矿 ; metal ores ; 油气藏形成 ; reservoir formation
- 页码：p.83-105
- 图表：14 illus., 137 refs.
- 分类号：1001
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
The metallic ore deposits closely associated with hydrocarbon reservoirs in sedimentary basins mainly include the Mississippi Valley-type (MVT) Pb-Zn deposits, the sandstone-and shale-hosted Cu-U deposits, the sulfide deposits in black shales, and the sedimentary rock-hosted Au-Sb-As-Hg-Tl deposits. The intimate association suggests a genetic linkage between metallization and hydrocarbon accumulation. In many MVT Pb- Zn deposits and sandstone/shale-hosted Cu deposits, crude oil and its derivatives predate metallization and may have provided reduced sulfur directly to the ore system or acted as reductant facilitating the reduction of sulfate. Metallization, hydrocarbon accumulation and their coupling relationship in a sedimentary basin may be governed by the evolution of these fluids. The intimate association between ore deposits and hydrocarbon reservoirs and the similarity in process and mechanism for metallization and reservoir formation make it possible to carry out the coordinative exploration and comprehensive forecast of both metal and oil-gas resources in sedimentary basins.