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The coupling relationship between the South Tianshan Mountains and the Tarim Basin: New evidence from the(U-Th)/He ages
Author(s): 
Pages: 234-243
Year: Issue:  5
Journal: Earth Science Frontiers

Keyword:  Tarim BasinSouth Tianshanbasin-mountain coupling(U-Th)/He ages;
Abstract: 塔里木盆地与南天山构造-沉积耦合关系是目前国内地质研究的热点之一。文中首次利用盆地内钻井样品的磷灰石和锆石(U-Th)/He年龄探讨了塔里木盆地与南天山构造-沉积耦合关系。塔北隆起He年龄为15~3Ma的磷灰石和锆石来自于南天山,热史模拟结果揭示了南天山在晚中新世开始快速抬升的时间约为15Ma,一直持续到5Ma左右。在此基础上,建立了南天山与塔里木盆地北缘新近纪的构造-沉积耦合关系演化模式。晚中新世,南天山开始快速隆升遭受剥蚀,而塔里木盆地北缘剧烈沉降接受来自南天山的沉积物。盆地内的磷灰石和锆石He年龄有效地记录了这些地质信息,为盆-山耦合关系研究提供了新证据。
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