| 来宾地区中晚二叠世之交烃源岩沉积的主控因素及大地构造背景 |
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| 引用本文： | 邱振,王清晨.来宾地区中晚二叠世之交烃源岩沉积的主控因素及大地构造背景[J].地质科学,2012,0(4):1085-1098. |
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| 作者姓名： | 邱振 王清晨 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室 北京 100029;
2. 中国石油勘探开发研究院 北京 100083 |
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| 摘 要： | 通过对来宾地区蓬莱滩剖面和铁桥剖面中二叠统(茅口组)与上二叠统(合山组)TOC、古生产力(Ba/Al)以及保存条件(V/Cr、V/(V+Ni)等)等指标的研究,认为本区仅蓬莱滩剖面局部发育优质烃源岩(TOC平均可达3％),缺氧的盆地环境是本区烃源岩发育的主控因素。结合区域研究资料,认为黔桂盆地整体上不发育上二叠统烃源岩,可能与这一时期以峨眉山地幔柱为代表的区域性地壳隆升作用有关。
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| 关 键 词： | 烃源岩 主控因素 中晚二叠世 来宾地区 |
| 收稿时间： | 2012-05-28 |
| 修稿时间： | 2012-05-28; |
Main factors controlling the deposition of the Middle-Upper Permian source rocks in Laibin area and its tectonic setting |
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| Qiu Zhen,Wang Qingchen.Main factors controlling the deposition of the Middle-Upper Permian source rocks in Laibin area and its tectonic setting[J].Chinese Journal of Geology,2012,0(4):1085-1098. |
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| Authors: | Qiu Zhen Wang Qingchen |
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| Institution: | 1. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;
2. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083 |
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| Abstract: | Based on analyzing geochemical indicators, such as total organic concentration (TOC), paleoproductivity (Ba/Al ratio), and paleoredox (V/Cr, V/(V+Ni)), of the Maokou Formation (the Middle Permian) and the Heshan Fromation (the Upper Permian) from the Penglaitan section and Tieqiao section in Laibin area , it is concluded that (1) good source rocks (average TOC≈3%) locally developed at the Penglaitan section and (2) the basin environment with anoxic depositional condition mainly controlled the accumulation of them. Compared with regional study, we consider that source rocks not developed regionally in the Qiangui basin during the Late Permian, which was probably related to the regional uplift caused by the Emeishan Plume. |
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| Keywords: | Source rock Main factor The Middle to Late Permian Laibin area |
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