Geochemical characteristics of bitumen in the Upper Permian reef limestone in Liuqiao(Chongzuo)area,Guangxi province

Qiu Zhen; Wang Qingchen; Jia Wanglu; Wei Hengye; Peng Pingan

doi:10.11743/ogg20120603

Views : 0 下载量: 917 CSCD: 0

PDF
Export
Share
Collection
Album

Geochemical characteristics of bitumen in the Upper Permian reef limestone in Liuqiao(Chongzuo)area,Guangxi province
Vol. 33, Issue 6, Pages: 836-844(2012)
Online First：28 December 2012，

Published：2012
DOI： 10.11743/ogg20120603
稿件说明：

移动端阅览

DOI：

Qiu Zhen, Wang Qingchen, Jia Wanglu, et al. Geochemical characteristics of bitumen in the Upper Permian reef limestone in Liuqiao(Chongzuo)area,Guangxi province[J]. 2012, 33(6): 836-844. DOI： 10.11743/ogg20120603.

摘要

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。

Abstract

Bitumen are well developed in the Upper Permian reef limestone in Liuqiao area

Chongzuo

Guangxi province

and they mainly occur in the cavities and fractures of bioherms

followed by biological coelomata.The bitumen samples show a high maturity and an atomic ratio of H/C generally less than 0.1.Based on the gas chromatography-mass spectrometry analyses of saturated hydrocarbon extracted from the bitumen in the Upper Permian as well as from the silicite and and siliceous mudstones in the Dalong Formation in the Liuqiao(Chongzuo)area

we correlated their n-alkane

terpane

hopane

sterane and biomarkers.The result shows that the possibility of the bitumen being sourced from the Dalong Formation of the Upper Permian is slime.Instead

it could come from the source rocks of the Devonian in the study area.