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生长地层及其在判断天山北缘前陆冲断褶皱带形成时间上的应用
郭召杰 方世虎 张锐 张志诚 吴朝东 邵奎政
摘 要:新生代以来天山北缘前陆冲断褶皱带自南向北可分为山麓冲断褶皱带、霍尔果斯-玛纳斯-吐谷鲁冲断褶皱带、独山子-安集海冲断褶皱带3排构造带.在野外观察的基础上,结合地震剖面分析,确定了各排构造带生长地层发育层序;结合裂变径迹年龄证据,并根据现有磁性地层等年代学资料,确定了天山北缘晚新生代构造变形时间序列:第一排构造带形成于距今10 Ma以来;第二排构造带形成于距今7~2.58 Ma以来;第三排构造带形成于距今大约0.73 Ma后.
关键词:生长地层;冲断褶皱带;形成时间;天山北缘;晚新生代
分类号:R112.2 文献标识码:A
文章编号:0253-9985(2006)04-0475-07
Growth strata and their application in timing deformation of foreland thrust-fold belts in the north margin of Tianshan
Guo Zhaojie Fang Shihu Zhang Rui Zhang Zhicheng Wu Chaodong
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基金项目:国家重点基础研究发展规划项目(2001CB409804)课题资助
作者简介:郭召杰(1963-),男,教授,造山带与盆地构造
作者单位:郭召杰(北京大学,造山带与地壳演化教育部重点实验室,北京100871)
方世虎(北京大学,造山带与地壳演化教育部重点实验室,北京100871)
张锐(北京大学,造山带与地壳演化教育部重点实验室,北京100871)
张志诚(北京大学,造山带与地壳演化教育部重点实验室,北京100871)
吴朝东(北京大学,造山带与地壳演化教育部重点实验室,北京100871)
邵奎政(中国石油天然气股份有限公司,大庆油田有限责任公司勘探分公司,黑龙江,大庆163000)
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