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Advances in Earth Science  2000, Vol. 15 Issue (5): 583-585    DOI: 10.11867/j.issn.1001-8166.2000.05.0583
Articles     
BASIC CHARACTERISTICS OF THERMAL CONVECTION DIAGENESIS AND ITS RESEARCH SIGNIFICANCE
LIU Li, YU Jun-min,SUN Xiao-ming, YANG Qing-jie
(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
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Abstract  

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.     
Received:  17 November 1999      Published:  01 October 2000
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LIU Li, YU Jun-min,SUN Xiao-ming, YANG Qing-jie. BASIC CHARACTERISTICS OF THERMAL CONVECTION DIAGENESIS AND ITS RESEARCH SIGNIFICANCE. Advances in Earth Science, 2000, 15(5): 583-585.

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http://www.adearth.ac.cn/EN/10.11867/j.issn.1001-8166.2000.05.0583     OR     http://www.adearth.ac.cn/EN/Y2000/V15/I5/583

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