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VOLCANIC AND THERMAL- WATER ACTIVITIES AND HYDROCARBON GENERATIONS IN THE RIFT BASINS, EASTERN CHINA
Author(s): 
Pages: 342-349
Year: Issue:  3
Journal: CHINESE JOURNAL OF GEOLOGY

Keyword:  火山热液烃源岩生烃作用裂谷盆地;
Abstract: 我国东部裂谷盆地主力烃源岩中均不同程度地发育有玄武岩和辉长岩等基性火成岩,并且伴有规模不等的热液活动.火山热液活动会给烃源岩带来热量,促使有机质快速生烃和异常成熟.玄武岩活动期间的热液作用为烃源岩提供了大量矿物质和养料,使周围泥质岩富含碳酸盐和有机质,可以形成优质烃源岩;热液活动向烃源岩提供了大量过渡金属元素,作者的实验证明了过渡金属对有机质生烃具有强烈的催化作用,使烃源岩在较低温度下生成较多数量的油气;火成岩周围的烃源岩可以提前进入生烃门限.
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