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《Acta Scientiarum Naturalium Universitatis Pekinensis》 2010-06
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Study on the Dolomitization and Dolostone Genesis

HE Yunlan1,2,LIU Bo2,QIN Shan1 1.School of Earth and Space Sciences,Peking University,Beijing 100871;2.Institute of Oil and Gas,Peking University,Beijing 100871;  
In order to trace back the resource of Mg2 +,studying on a lot of examples of the dolostone origins,then finding that in geological environment,the Mg2 + is mainly from diagenetic liquid,magmatite and other solid minerals,and organism.Mg2 + replaced Ca2 + of calcite under special hydrokinetics mechanism while dolomitization occurred.Based on the Mg2 + resource and hydrokinetic mechanism,the dolomitization models,accepted by most people,can be divided into evaporation model (Sabkha model),seepage-reflux model,mixing-water model,marine dolomitization model,deep burial model and hydrothermal model.Based on the different buried conditions,dolomitization can be grouped into three kinds:shallow dolomitization ( 1000 m),mid-deep dolomitization (1000-2000 m) and deep dolomitization ( 2000 m).
【Fund】: 中国石化股份有限公司勘探南方分公司科技项目(G0800-06-ZS-265)资助
【CateGory Index】: P588.245
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