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Biomarker Compounds as Indicators of Paleoenvironments   总被引:2,自引:0,他引:2  
In an attempt to assess the paleoenvironments of terrestrial sediments,some twenty-two representa-tive Chinese non-marine sediment samples were studied using the molecular organic geochemistry method.The sediment samples stuied include oilshale,shale,mudstone and glauber salt from Tertiary to Cretaceous in age.Judging from geological/geochemical data and paleosalinity data,the samples studied are of lacustrine sedimentary origin and can be divided into three different types:fresh water,brackish and saline/hypersaline lake sediments.The aliphatic fractions were separated from the extracts of the samples and analysed by means of GC and GC/MS instruments,giving a number of parameters such as relative abundances of alkanes and cycloalkanes as shown in the mass chromatograms.  相似文献   
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矿物包裹体在碳酸盐岩区油气评价中的意义   总被引:7,自引:0,他引:7  
本文对我国河北等若干地区碳酸盐岩油气储集层及非储集层研究证明,油气藏形成的各个阶段均可形成包裹体。其中有机包裹体是烃类原生及次生运移的直接标志。油气评价中,可以利用包裹体的类型、特征、古温度及气相成分等,进行生油热历史及有机成熟史的研究。通过包裹体研究,可获得古油田水的化学组成、盐度、碳、氢、氧稳定同位素值、氧化还原电位、酸度及压力等参数,从而进行油气生成及储集条件的讨论。  相似文献   
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