塔中上奥陶统方解石胶结物类型及其形成环境-地球科学与环境学报.PDFVIP

31 3 Vol.31 No.3 2009 9 Journal of Earth Sciences and Environment Sep.2009 1 1 1 2 2 王振宇, 吴　丽 , 张云峰 , 韩剑发, 张丽娟 (1. , 10500; 2. , 841000) :, 、, 11 。, 。, 、 。。 :;;; :TE122　:A 　:1 72-5 1(2009)03-02 5-07 Study on Category and Forming Environment of Upper Ordovician Carbonate Rock Calcite Cement in TazhongDistrict 1 1 1 2 2 WANG Zhen-yu , W U Li , ZHANG Yun-feng , HAN Jian-fa , ZHANG Li-juan (1.School of Resources and Environment, Southwest Petroleum University , Chengdu 10500, Sichuan, China; 2.Instituteof Exp loration and Development, Tarim Oilf ield Comp any , China ational Petroleum Corp oration, K uerle 841000, X inj iang, China) bstract:Through comprehensive research on the characteristic of calcite cement and its genesis by hundreds of thin slice and polished surface of carbonate rocks of Upper Ordovician, together with the analysis of the microelement and C and O isotopes, eleven types of calcite cementation are identified, the feature of cement is described, and the distribution and sequence of cement is determine.On the basis of above research, the forming environment of calcite cement of carbonate rocks in Tazhong is analyzed, and it is divided into submarine, meteoric f reshw ater and burial diagenetic environment.The conclusion provides a powerful foundation for the establishment of pore evolution history and the forecast of favorable exploration target. Key words:calcite cement;diagenetic environment;carbonate rock;Tazhong area 。 0 　 、,