石油与天然气地质 ›› 1996, Vol. 17 ›› Issue (2): 146-149.doi: 10.11743/ogg19960210

• 论文 • 上一篇    下一篇

下扬子区中、古生界构造演化与油气藏形成史

张建球   

  1. 地质矿产部华东石油地质局勘探开发规划研究院, 江苏扬州 225002
  • 收稿日期:1995-08-17 修回日期:1996-01-23 出版日期:1996-06-25 发布日期:2012-01-16
  • 基金项目:

    国家科技攻关项目“85-102-13-03”的部分成果

TECTONIC EVOLUTION AND HYDROCARBON POOL FORMING HISTORY OF PESO-PALEOZOIC IN LOWER YANGTZE REGION

Zhang Jianqiu   

  1. Planning institute of Petroleum Exploration and Development, Huadong Bureau of Petroleum Geology, MGMR, Yangzhou, Jiangsu
  • Received:1995-08-17 Revised:1996-01-23 Online:1996-06-25 Published:2012-01-16

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摘要：

下扬子区是一个多旋回沉积实体相叠置的复合型含油气区,有古生界和中下三叠统稳定背景下的海相沉积:有上三叠统一下白垩统挤压背景下的山间盆地沉积:也有晚白垩世以后拉张背景下的断陷沉积。其中,海相烃源岩在地史中发生了两次主要生油高峰期:第一次是加里东期,第二次是晚白垩世之后。三大主要成藏期:加里东期、印支-燕山期、燕山晚期-喜山期。其中,燕山晚期-喜山期形成的油气藏是该区最现实的勘探对象。

关键词: 下扬子区, 构造演化, 生油岩演化, 成藏期

Abstract:

Lower Yangtze Region is a composite hydrocarL,on-bearing area cmoposed of superposed multicyclic depositional body. The depositional body includes: marine sediments deposited on the stable Paleozoic and Middle-Lower Triassic: intermontane basin formed in Upper Triassic-Lower Cretaceous compressive environment: fault-depression formed in post-Late Cretaceous tensive environment. Two peak stages of oil generation could be determined in the evolution history of marine source rock. The first one was the Caledonian, and the source rock was Lower Paleozoic: the second one happened post-Late Cretaceous in Upper Paleozoic, Middle-Lower Triassic Systems. Three main pool-forming stages were Caledonian, Indosinian-Yenshan and Late Yenshan-Himalayan Periods. The pools formed in late Yenshan-Himalayan are most favourable targets for hydrocarbon exploration.