哈密坳陷火山岩SHRIMP锆石U-Pb年龄分析  

SHRIMP Zircon U-Pb Age Analysis of Volcano Rocks in Hami Depression

作　　者：田连玉[1] 汪誉新[1] 许开前[1] 刘庆敏[1] 

机构地区：[1]中国石化股份胜利油田分公司勘探开发研究院西部分院,东营257000

出　　处：《科学技术与工程》2016年第19期151-154,178,共5页Science Technology and Engineering

基　　金："十二五"国家重大科技专项(2011ZX05002-002);中国石化股份公司重点科技公关项目(P12035)资助

摘　　要：哈密坳陷因未有钻井揭示,石炭系是否发育,存在较大的不确定性。本文根据哈密坳陷内新钻探井红1井情况,进行火山岩SHRIMP锆石U-Pb测年,确定红1井3 536～3 549 m安山岩的锆石年龄为（298.2±3.5）Ma,处于晚石炭世格舍尔阶与早二叠世阿瑟尔阶的界限附近。综合岩石岩性组合、常规测井及成像测井等资料,将红1井段3 497～4 352 m确定为石炭系,对哈密坳陷石炭系的油气勘探具有重大的意义。Due to no drilling to reveal in Hami depression,there have large uncertainties to determine whether there develops Carboniferous system.In this study,though the drilling status of well Hong1,we do the SHRIMP zircon U-Pb age analysis,and then make sure that the zircon age of andesite rocks is（ 298.2 ± 3.5） Ma,near the boundary of late Carboniferous and Early Permian.Combining the lithology and logging data,the interval 3 497 ～4 352 m of well Hong1 is divided into carboniferous formation.It is of great significance to the carboniferous oil and gas exploration in Hami depression.

关 键 词：哈密坳陷 石炭纪 SHRIMP锆石U-PB测年 油气勘探 

分 类 号：P597.3[天文地球—地球化学] P595[天文地球—地质学]