新疆石油地质 ›› 1998, Vol. 19 ›› Issue (1): 28-31.

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塔里木盆地中生界煤层的地球化学特征*

朱扬明, 梅博文, 金迪威   

  1. 江汉石油学院 湖北荆州 434102
  • 收稿日期:1995-11-07 发布日期:2020-11-15
  • 作者简介:朱扬明: 副教授 地球化学
  • 基金资助:
    * 国家“ 八五”重点科技攻关项目85-101-01-04-06 部分研究成果

GEOCHEMICAL CHARACTERISTICS OF MESOZOIC COAL SEAM IN TARIM BASIN

Zhu Yangming, Mei Bowen, Jin Diwei   

  1. Jianghan Petroleum Institute, Jinzhou, Hubei 434102
  • Received:1995-11-07 Published:2020-11-15
  • About author:Zhu Yangxin, Associate Professor, Geochemistry

摘要: 塔里木盆地东部及周缘坳陷的中、下侏罗统煤层发育, 库车坳陷和塔北局部地区有三叠系煤层(线)。它们可能是盆地的主要陆相烃源岩。煤样的三环萜烷、五环三萜烷和甾烷等饱和烃生物标志物和芳香烃化合物有特殊的组成和分布, 陆源高等植物生源和氧化性沉积环境特征明显。它们的烷基环己烷和烷基苯系列化合物丰富,表明细菌是煤中有机质的重要组成部分。

关键词: 塔里木盆地, 中生代, 煤层, 生物标志物, 芳香烃

Abstract: Mid-Lower Jurassic coal seams are developed in eastern Tarim basin and its peripheral depressions, Triassic coal bed/line occurred in Kuqa depression and some areas of northern Tarim basin, they might be major terrestrial source rocks in Tarim basin.Specific composition and distribution are found in saturated hydrocarbon biomarkers, such as tricyclic terpanes, pantacyclic triterpanes and steranes, and aromatic compounds, showing obvious characteristics of terrestrial higher plant origin and oxidation depositional environment.Abundant alkylcyclohexans and alkybenezes in the samples indicated that bacteria are an important composition in organic matter of coal.

Key words: Tarim basin, Mesozoic, Coal bed, Biomarker, Aromatic hydrocarbon