塔里木盆地奥陶系碳酸盐岩热液蚀变类型及蚀变流体的分带特征  

The hydrothermal alteration types and zoning features of Ordovician carbonate in Tarim Basin

作　　者：丁茜 胡秀芳[2,3] 高奇东[2,4] 叶瑛 张平萍[2] DING Qian;HU Xiufang;GAO Qidong;YE Ying;ZHANG Pingping(Exploration&Production Research Institute,SINOPEC,Beijing 100083,China;Ocean College,Zhejiang University,Zhoushan 316021,Zhejiang Province,China;China University of Petroleum(Beijing),Beijing 102249,China;Shengli Oilfield,SINOPEC,Dongying 257001,Shandong Province,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]浙江大学海洋学院,浙江舟山316021 [3]中国石油大学,北京102249 [4]中国石化胜利油田,山东东营257001

出　　处：《浙江大学学报（理学版）》2019年第5期600-609,共10页Journal of Zhejiang University（Science Edition）

基　　金：国家自然科学基金资助项目(41702134,U1663209);中国科学院A类战略性先导科技专项(XDA14010201)

摘　　要：已探明塔里木盆地下古生界碳酸盐岩地层储量巨大。对塔里木盆地西北部柯坪-巴楚-阿图什一带的4块区域开展了系统的野外和重点观测工作,包括蓬莱坝剖面、柯坪水泥厂剖面、托普郎剖面等。本研究通过考察塔里木盆地奥陶系碳酸盐岩热液溶蚀及相关现象。从野外产状、伴生关系以及矿物岩石学特征角度解剖奥陶系地层中热液矿物组合的地质特征。研究表明,该区域存在富镁流体、富氟流体和富硫流体3种流体,分别来源于封存卤水、火成活动和TSR热液。不同性质流体蚀变具有相似的分带性。The huge explored reserve from the carbonate layer of lower paleozic Tarim Basin has turned the area into one of the most important exploration and development sites.In this study,we conducted a comprehensive field study in the Kalpin belt,northwestern Tarim basin,with emphasis on four areas:Penglaibei profile,Kalpin cement plant profile,Toplung profile.We mainly paid attention to the hydrothermal corrosion and the alteration during the growth of Ordovician carbonate rock.The hydrothermal products were observed,described and sampled for further analysis.The geological characteristics of those products are revealed by the field output form,associated manner and mineralogy.Three types of fluids that exist in the study area,namely Mg-riched fluid,F-riched fluid and S-riched fluid,originates from sealed brine,igneous activities and TSR hydrothermal fluids,respectively.Although fluid type varied,the alteration of those fluids share a similar belt-shape distribution.

关 键 词：塔里木盆地 奥陶系碳酸盐岩 热液白云岩 热液蚀变 热液溶蚀 

分 类 号：P57[天文地球—矿物学] TE122[天文地球—地质学]