南黄海盆地含烃热液流体活动:流体包裹体证据

陈勇 周瑶琪 倪培 胡文碹 任拥军 赵振宇. 南黄海盆地含烃热液流体活动:流体包裹体证据[J]. 岩石学报, 2007, 23(9): 2296-2302.
引用本文: 陈勇 周瑶琪 倪培 胡文碹 任拥军 赵振宇. 南黄海盆地含烃热液流体活动:流体包裹体证据[J]. 岩石学报, 2007, 23(9): 2296-2302.

南黄海盆地含烃热液流体活动:流体包裹体证据

  • 基金项目:

    国家自然科学基金(40072042)和中国石油大学博士基金(y060132)资助.致谢 本文有关内容曾在南京大学的首届亚洲流体包裹体研究国际会议(ACR0FI)上得到卢焕章教授和段振豪教授指导,审稿专家对本文给出了中肯的修改意见,在此深表谢意.

  • 南黄海盆地勿南沙隆起古生界地层的地热和地球化学异常一直受到众多地质学家和地球化学家的关注。本文联用显微测温和激光拉曼光谱技术对南黄海盆地勿南沙隆起的常州(CZ)-2-1井二叠系栖霞组灰岩石英脉中的流体包裹体进行了详细研究。根据岩石学特征、室温下包裹体相态特征和成分差别,这些包裹体可以分成三大类六小类。流体包裹体拉曼光谱分析结果表明包裹体中含有甲烷和有机物,证明了该区曾经有含烃类流体活动。显微测温分析表明流体包裹体的均一温度在214℃~305℃之间,远高于该区正常沉积的盆地古地温,暗示包裹体捕获了热液流体。根据岩石学观察和测温分析结果,样品中主要存在三期流体包裹体,其均一温度和流体的甲烷浓度分别为:214℃,0.1347mol/L;265℃,0.1722mol/L;305℃,0.3370mol/L。包裹体甲烷浓度随均一温度升高呈增大的趋势。本次研究证实南黄海盆地勿南沙隆起区曾存在含烃热液流体活动,这些实验结果可以为合理解释热异常和地球化学异常提供证据。
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出版历程
修回日期:  2007-04-12
刊出日期:  2007-09-30

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