现代地质Issue(1)：163-172,10.
二连盆地下白垩统湖相云质岩分布及控制因素
Distribution Characteristics and Controlling Factors of the Lower Cretaceous Lacustrine Dolomitic Rock in Erlian Basin
摘要
Abstract
A set of the mixed clastic-carbonate deposits were developed in the Lower Cretaceous of Erlian Ba-sin.In recent years,abundance of hydrocarbon shows have been found in the dolomitic rocks,but there is little research on this kind of mixed deposits.Therefore,combined with core observation,microscopic identification and bore log analysis,we made a comprehensive study of petrologic features and distribution of mixed clastic-carbonate deposits in the main sags.According to this study,some knowledge on the dolomitic rocks were rec-ognized:(1 )Dolomitic rocks mainly affected by the source area lithology is typical parent material mixing.(2) Different types of lacustrine basin evolution lead to sedimentary facies differences,which determine the vertical distribution of dolomitic rocks.(3)Devitrification of volcanic glass provides a large number of Mg2+and Fe2+ions for buried dolomitization,resulting in the high iron content of dolomite.(4)Distribution of dolomitic rocks is less affected by paleoclimate.关键词
云质岩/母源混合/凝灰质/埋藏白云化作用/下白垩统/二连盆地Key words
dolomitic rock/parent material mixing/tuffaceous composition/buried dolomitization/the Lower Cretaceous/Erlian Basin分类
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王会来,高先志,杨德相,李浩,张志遥,王旭..二连盆地下白垩统湖相云质岩分布及控制因素[J].现代地质,2014,(1):163-172,10.基金项目
中国石油“十二五”重大研究课题“二连盆地富油凹陷深化勘探潜力与方向研究”（HBYT-YJY-2011-JS-406）。 （）
