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《Journal of Jilin University(Earth Science Edition)》 2006-02
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The Thermal Fluid Activities and Their Modification on Volcaniclastic Rock in Budate Group—An Example from the Beier Sag of Hailaer Basin

LI Chun-bai~(1,2),ZHANG Xin-tao~3,LIU Li~4,REN Yan-guang~2,MENG Peng~41.Faculty of Energy Resources,China University of Geosciences,Beijing100083,China2.Exploration and Development Research Institute of Daqing Oil Field Ltd Co,Daqing,Heilongjiang 163712,China3.School of Resource and Information,China University of Petroleum,Beijing 102249,China4.College of Earth Sciences,Jilin Univesity,Changchun 130061,China  
The thermal fluid acted frequently in the Budate Group of the Beier sag,Hailaer Basin.The main characters of the thermal fluid activity are recognized as follow: many types and stages of veins are widely developed;vitrinite reflectivity of different areas varies apparently with the depth;there was a high temperature field during the formation of the thermal fluid.meanwhile,the volcaniclastic rocks were modificated by the thermal fluid activity,for example,sericitization of plagioclase,chloritization of volcanic detritus in andesitic detris tuff;in the tufaceous mud,the thermal fluid activity accelerates "maturating" of the organic carbon by heating;and the trace elements show an anomaly in the wall rocks.These changes prove further the existence of the thermal fluid activity in micro-scale.
【Fund】: 中石油勘探项目(040101-1)
【CateGory Index】: P314
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