...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chinese science bulletin >Late Cretaceous-Cenozoic exhumation history of Tiantangzhai region of Dabieshan Orogen: Constraints from (U-Th)/He and fission track analysis
【24h】

Late Cretaceous-Cenozoic exhumation history of Tiantangzhai region of Dabieshan Orogen: Constraints from (U-Th)/He and fission track analysis

机译：大别山造山带田塘寨地区晚白垩世-新生代发掘史：（U-Th）/ He约束和裂变径迹分析

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

Integrated fission track and (U-Th)/He analysis is carried out on 6 apatite and 6 zircon samples from a near vertical section in The Tiantangzhai region at the core of the present Dabieshan orogen. The result shows that the region experienced cooling/exhumation during the Late Cretaceous and Early Tertiary period. Age-elevation relationships for different dating systems and different minerals suggest a pulse of rapid exhumation at ～110 Ma before present, preserved in the structurally highest samples. At lower elevations, ages begin to decrease with decreasing elevation, suggesting lower exhumation rates since 90 Ma. Two periods of different exhumation rates are identified since 90 Ma. The average apparent exhumation rate for the period of 43.4— 22.5 is 0.062 km/Ma, whereas that for the period of 76.4— 47.4 Ma is 0.039 km/Ma.
机译：在现今大别山造山带核心的田塘寨地区近垂直剖面的6个磷灰石和6个锆石样品上进行了综合裂变径迹和（U-Th）/ He分析。结果表明，该地区在白垩纪晚期和第三纪早期经历了冷却/回火。不同的年代系统和不同的矿物的年龄-海拔关系表明，在目前的〜110 Ma之前有快速发掘出脉动，并保留在结构最高的样品中。在海拔较低的地方，年龄随着海拔的降低而开始减小，这表明自90 Ma以来的尸体发掘率较低。自90 Ma以来，发现了两个不同的出土率周期。 43.4—22.5周期的平均表观掘尸速率为0.062 km / Ma，而76.4— 47.4 Ma的平均表观掘尸速率为0.039 km / Ma。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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