地质科学2024，Vol.59Issue(2)：352-364,13.DOI:10.12017/dzkx.2024.025
阿姆河右岸中-下侏罗统烃源岩地球化学特征及其沉积环境研究
Geochemical characteristics and sedimentary environment of the Middle and Lower Jurassic source rocks in the right bank of the Amu Darya River
摘要
Abstract
The Amu Darya Basin is the most abundant basin of natural gas resources in Central Asia.The main source rocks in the right bank of the Amu Darya Basin exist in the Middle and Lower Jurassic coal measure strata,but the geochemical characteristics,organic matter sources and sedimentary environment of the source rocks need to be further clarified.Based on systematic geochemical tests of Jurassic source rocks in the right bank of the Amu Darya Basin,the data of organic carbon,vitrinite reflectance,saturated hydrocarbon and aromatic hydrocarbon gas chromatography and organic carbon isotope of the samples were analyzed.The results show that:1)the abundance of organic matter and hydrocarbon generation potential of the Middle and Lower Jurassic source rocks in the right bank of the Amu Darya River are high.The kerogen types are mainly Ⅱ1 and Ⅱ2,with a small amount of type Ⅲ.The source rocks are in the mature to high mature stage.The predominant source rocks primarily generate oil,with a minor gas contribution;2)most of the Middle and Lower Jurassic source rocks in the right bank of the Amu Darya River were deposited in the highly reducing environment with high salinity,while a few were deposited in the oxidizing environment with low salinity;3)the source material of organic matter in the Middle and Lower Jurassic source rocks in the right bank of the Amu Darya River is mainly lower plankton,and some organic matter comes from higher plants.关键词
烃源岩/地球化学特征/沉积环境/有机质来源/阿姆河盆地Key words
Hydrocarbon source rocks/Geochemical characteristics/Sedimentary environment/Source of organic matter/The Amu Darya Basin分类
天文与地球科学引用本文复制引用
姚建廷,周栋,刘荣和,刘四兵..阿姆河右岸中-下侏罗统烃源岩地球化学特征及其沉积环境研究[J].地质科学,2024,59(2):352-364,13.基金项目
国家自然科学基金项目(编号:41972158)资助 （编号:41972158）
