| 安徽无为-巢湖地区中下二叠统碳酸盐岩成岩作用 |
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| 引用本文： | 杜叶龙,李双应,王冰,赵大千,杨栋栋.安徽无为-巢湖地区中下二叠统碳酸盐岩成岩作用[J].地质学报,2011,85(4):543-556. |
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| 作者姓名： | 杜叶龙 李双应 王冰 赵大千 杨栋栋 |
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| 作者单位： | 合肥工业大学,合肥工业大学,合肥工业大学,合肥工业大学,合肥工业大学 |
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| 基金项目： | 安徽省自然科学基金项目（编号 070415205）、国家自然科学基金项目（编号 40972082、40572076）和中国石油化工股份有限公司项目（中上扬子及邻区古生代古沉积环境演化研究）联合资助成果。 |
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| 摘 要： | 成岩作用控制孔隙演化,对油气开采具有重要的指示作用.安徽无为-巢湖地区中下二叠统碳酸盐岩广泛发育,有机质丰富,多年来主要集中在地层、古生物及沉积相方面的研究,成岩作用的工作较少.镜下鉴定显示研究区发育溶解作用、去白云化作用、压溶作用、破裂作用4种主要的建设性成岩作用和泥晶化作用、压实作用、胶结作用、白云化作用、硅化作用...
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| 关 键 词： | 成岩作用 中下二叠统 碳酸盐岩 无为-巢湖地区 安徽 |
| 收稿时间： | 10/1/2010 4:46:04 PM |
| 修稿时间： | 2010/12/20 0:00:00 |
Carbonate diagenesis of lower-middle Permian of Wuwei-Chaohui area in Anhui province |
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| duyelong,lishuangying,wangbing,zhaodaqian and yangdongdong.Carbonate diagenesis of lower-middle Permian of Wuwei-Chaohui area in Anhui province[J].Acta Geologica Sinica,2011,85(4):543-556. |
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| Authors: | duyelong lishuangying wangbing zhaodaqian and yangdongdong |
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| Institution: | HeFei University of Technology,HeFei University of Technology,HeFei University of Technology,HeFei University of Technology,HeFei University of Technology |
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| Abstract: | Abstract: Diagenesis control the porosity evolution, with symbolic meaning, it is very important for the exploration of the oil and gas. The carbonate of middle-lower Permian of Wuwei-Chaohui area in Anhui province widely and well developed, and the organic matter is very rich. So many years the work is focused on strata, paleontology and sedimentary facies, little on diagenesis. Microscopic examination shows that the studying area mainly develop dissolution, dedolomitization, pressure solution, tectonic rupture four types of destructive diageneses and micritization, compaction, cementation, dolomitization, silicification, recrystallization six types of Constructive diageneses. Compared with the C-O isotope analysis results, this area included marine(shallow marine platform and deep sea slope), meteoric(vadose and phreatic zone) and burial mainly three types of diagenetic environment, developing different diagenesis respectively. Marine environment: mainly micritization(shallow marine platform) and the first type of silicification(deep sea slope); Burial environment: mainly compaction, pressure solution, dolomitization, the third type of selective silification and late recrystallization; Meteoric environment: cementation(including drusy isopachous rim cement, drusy cement and coaxial accretion cement, belonging to phreatic zone, gravity-type cement and crescent cement, belonging to vadose zone), dissolution, early recrystallization, dedolomitization and the second type of silicification. Except for rich organic matter, the studying area has high porosity, the highest is up to 2%-5%, mainly developed in the pressure solution of Chuanshan and Qixia Formation, also in the silicon members and silicon highly contained limestone of Qixia Formation, excellent connectivity and rich organic matter make it the ideal place for generation, storage and migration of the gas and oil. Therefore, there is great theoretical and strategical significance for the further geological study, predicting and explorating the gas and oil in studying the diagenesis of the carbonate of middle-lower Permian of Wuwei-Chaohui area in Anhui province. |
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| Keywords: | Diagenesis middle-lower Permian carbonate Wuwei-Chaohu area Anhui province |
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