...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Asian earth sciences >Tracking the multiple-stage exhumation history and magmatic- hydrothermal events of the West Junggar region, NW China: Evidence from ~(40)Ar/~(39)Ar and (U-Th)/He thermochronology
【24h】

Tracking the multiple-stage exhumation history and magmatic- hydrothermal events of the West Junggar region, NW China: Evidence from ~(40)Ar/~(39)Ar and (U-Th)/He thermochronology

机译：追踪中国西北部西准region尔地区的多阶段发掘历史和岩浆热液事件：来自〜（40）Ar /〜（39）Ar和（U-Th）/ He热年代学的证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To decipher cooling events in the West Junggar region, biotite and K-feldspar Ar-40/Ar-39, and zircon and apatite (U-Th)/He isotopic analyses of intrusive rocks were carried out. Previous U-Pb data showed that intrusive bodies in the Baogutu area were emplaced at 315-310 Ma. U-Pb and zircon (U-Th)/He dating results (313-241 Ma) suggest that a magmatic-hydrothermal event lasted for 72 Ma in the Baogutu area of the West Junggar region. Early-stage high temperature alteration (900-300 degrees C) lasted for 6-2 Ma and was followed by prolonged phyllic and argillic alteration lasting 67-63 Ma between 350 and 200 degrees C. Finally, slower cooling occurred between 200 and 70 degrees C, accompanied by post-mineralization uplift and erosion. In this study, three main episodes of relatively rapid cooling were distinguished in the West Junggar region, i.e. late Carboniferous-early Permian (307-277 Ma), middle Triassic (241-232 Ma) and early Cretaceous (145-120 Ma). The first rapid cooling during the late Carboniferous-early Permian was possibly associated with the release of magmatic heat. The middle Triassic and early Cretaceous cooling and exhumation are interpreted as a response to collision(s) between the Qiangtang and Kunlun-Qaidam or Lhasa blocks. The Cenozoic India-Eurasia collision, however, may have had little or no effect on modem tectonic reactivation of the West Junggar region.
机译：为了解释西准gar尔地区的降温事件，对侵入岩进行了黑云母和钾长石Ar-40 / Ar-39以及锆石和磷灰石（U-Th）/ He同位素分析。先前的U-Pb数据显示，宝古图地区的侵入体位于315-310 Ma。 U-Pb和锆石（U-Th）/ He测年结果（313-241 Ma）表明，西准gar尔地区包古图地区的一次岩浆热液事件持续了72 Ma。早期高温变化（900-300摄氏度）持续了6-2 Ma，随后在350至200摄氏度之间持续了长达67-63 Ma的叶序和藻状蚀变。最后，200至70摄氏度之间的冷却变慢了C，伴有矿化后的隆起和侵蚀。在这项研究中，在西准gar尔地区发现了三个相对较快的降温主要时期，即石炭纪晚期-二叠纪早期（307-277 Ma），三叠纪中部（241-232 Ma）和白垩纪早期（145-120 Ma）。石炭纪-早二叠纪晚期的首次快速冷却可能与岩浆热量的释放有关。三叠纪和白垩纪早期的冷却和回火被解释为对the塘和昆仑-柴达木或拉萨地块之间碰撞的响应。然而，新生代印度-欧亚大陆碰撞可能对西准gar尔地区的现代构造活化几乎没有影响。

著录项

  • 来源
    《Journal of Asian earth sciences》 |2018年第15期|130-141|共12页
  • 作者

    Yin Jiyuan; Chen Wen; Xiao Wenjiao; Long Xiaoping; Tao Ni; Liu Li-Ping; Yuan Chao; Sun Min;

  • 作者单位

    Chinese Acad Geol Sci, Lab Isotope Thermochronol, Inst Geol, Beijing 100037, Peoples R China;

    Chinese Acad Geol Sci, Lab Isotope Thermochronol, Inst Geol, Beijing 100037, Peoples R China;

    Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China;

    Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Shaanxi, Peoples R China;

    Changan Univ, Lab Mineralizat & Dynam, Sch Earth Sci & Resources, Xian 710054, Shaanxi, Peoples R China;

    Shandong Univ Technol, Sch Resources & Environm Engn, Zibo 255000, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China;

    Univ Hong Kong, Dept Hong Kong, Pokflam Rd, Hong Kong, Hong Kong, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    West Junggar; Zircon and apatite (U-Th)/He; Baogutu porphyry Cu deposit; Exhumation; Cooling history;

    机译：西准gar尔;锆石和磷灰石（U-Th）/ He;包古图斑岩铜矿床;出土;冷却史;

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号