热对流成岩作用的基本特征与研究意义

doi:10.11867/j.issn.1001-8166.2000.05.0583

地球科学进展 ›› 2000, Vol. 15 ›› Issue (5): 583 -585. doi: 10.11867/j.issn.1001-8166.2000.05.0583

热对流成岩作用的基本特征与研究意义

刘立 ^①,于均民 ^②,孙晓明 ^③,杨庆杰 ^④

①吉林大学朝阳校区地球科学学院,吉林长春 130061;②西北地质研究所,甘肃兰州 730020;③大港油田集团有限责任公司地质勘探开发研究院,天津大港 300280;④大庆石油管理局勘探开发研究院,黑龙江大庆 163712

收稿日期:1999-11-17 修回日期:2000-03-03 出版日期:2000-10-01
通讯作者: 刘立(1955-),男,内蒙古喜桂图旗人,教授,主要从事储层沉积地质学和盆地动力学研究。
基金资助:
国家教育部博士点科学基金项目“裂谷盆地中砂岩的热对流成岩作用及其动力学机制研究”(编号:1999018707)资助。

BASIC CHARACTERISTICS OF THERMAL CONVECTION DIAGENESIS AND ITS RESEARCH SIGNIFICANCE

LIU Li ^①, YU Jun-min ^②,SUN Xiao-ming ^③, YANG Qing-jie ^④

(①College of the Earth Science,Chaoyang School District of Jilin University,Changchun 130026,China;②North West Geology Institute,Lanzhou 730020,China;③Geological Exploration&Development Research Institute,Dagang Oilfield Group Ltd.Co,Dagang 300280,China;④Exploration&Development Research Institute,Daqing Petroleum Administrative Bureau,Daqing 163712,China

Received:1999-11-17 Revised:2000-03-03 Online:2000-10-01 Published:2000-10-01

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介绍了热对流产生的条件与地质背景,指出火成侵入体、盐丘和活跃断层周围等温线陡倾斜场所易发生热对流成岩作用。综述了岩浆成因热对流的岩石学记录,包括热变质作用、突然升温—逐渐降温的自生矿物组合和相对高温的自生矿物类型,分析了自生伊利石的K/Ar年龄在热对流成岩作用研究中的作用。阐述了热对流成岩作用对盆地动力学、砂岩储层和油气运移研究的意义。

关键词: 热对流, 热对流成岩作用, 盆地流体, 热对流的岩石学记录, 自生伊利石的K/Ar年龄

As a new research field of fluids-rock interaction, the thermal convection diagenesis is developing under the basis of basin-geofluids research. This paper introduces the condition and geological settings for the thermal convection diagenesis taking place, points out that the places around igneous intrusions or around salt domes or active faults are subjected to diagenetic reaction. The authors comprehensively discuss the lithologic records of thermal convection caused by magma activity, including thermal contact metamorphic rock, thermal alterated rock, the authigenic minerals assemblages of temperature suddenly increasing-temperature gradually decreasing, relatively higher temperature authigenic minerals,analyses the importance of the K/Ar age of authigenic illite in the research of thermal convection diagenesis. The authors also emphases the significance of thermal convection diagenesis research in the field of basin dynamics, the reservoir of sandstone and migration of petroleum.

Key words: Thermal convection, Thermal convection diagenesis, Basin geofluids, The lithologicrecords of thermal convection, K/Ar age of authigenic illite.

中图分类号:

P588.1

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