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Geochemical characteristics of bitumen in the Upper Permian reef limestone in Liuqiao (Chongzuo) area, Guangxi province
Author(s): Qiu Zhen, Wang Qingchen, Jia Wanglu, Wei Hengye, Peng Pingan
Pages: 836-
844
Year: 2012
Issue:
6
Journal: Oil & Gas Geology
Keyword: 地球化学; 沥青; 上二叠统; 生物礁灰岩; 大隆组; 柳桥地区; 广西;
Abstract: 广西崇左柳桥地区上二叠统生物礁灰岩中普遍发育沥青,沥青主要充填于生物礁内的溶蚀孔洞和裂隙中,其次在生物体腔内.研究区内上二叠统沥青的成熟度较高,H/C原子比一般小于0.1.对崇左柳桥地区上二叠统生物礁灰岩中的沥青和大隆组的硅质岩、硅质泥岩等进行饱和烃色谱-质谱分析,综合对比其所含直链烷烃、萜烷、藿烷、甾烷和生物标志物.结果表明,这些上二叠统沥青源自大隆组的可能性不大,但可能来源于泥盆系烃源岩.
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