石油实验地质2017，Vol.39Issue(3)：370-376,7.DOI:10.11781/sysydz201703370
羌塘盆地昂达尔错地区侏罗系烃源岩生物标志物特征及其指示意义
Biomarker characteristics of Jurassic source rocks in Angdarco area in Qiangtang Basin and their significance
摘要
Abstract
The characteristics of biomarkers for three sets of main source rocks in Angdarco area of the Qiangtang Basin were studied, and the significance for sedimentary environment and thermal maturity was discussed, based on the analyses of saturated hydrocarbon chromatogram and mass spectrometry.Thermally mature source rocks from the Lower Jurassic Quse Formation have relatively higher ratios of (C21+C22)/(C28+C29), Ts/Tm, C31 homohopane S/R, and rearranged sterane/regular sterane.The main sources were sapropelic and humic-sapropelic marine organic matter.Source rocks from the Middle Jurassic Buqu Formation were deposited in a reducing environment, and were distinguished from the other two source rocks by relatively lower ratios of Pr/Ph and C19 /C23 tricyclic terpane, which indicated sapropelic and humic-sapropelic organic matter inputs, at low mature to mature stage.Source rocks from the Middle Jurassic Xiali Formation were deposited in a marine-terrestrial transitional environment with a lower salinity, presenting humic and sapropelic-humic organic matter inputs, and low thermal maturity.关键词
烃源岩/生物标志物/侏罗系/昂达尔错/羌塘盆地Key words
source rock/biomarker/Jurassic/Angdarco area/Qiangtang Basin分类
能源科技引用本文复制引用
彭清华,杜佰伟,谢尚克,郑博..羌塘盆地昂达尔错地区侏罗系烃源岩生物标志物特征及其指示意义[J].石油实验地质,2017,39(3):370-376,7.基金项目
中国地质调查局"青藏高原非常规油气调查" 项目(1212011221106)资助. （1212011221106）
