...
  • 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 >Provenance of the Paleogene sediments in the Pearl River Mouth Basin, northern South China Sea: Insights from zircon U-Pb and fission track double dating
【24h】

Provenance of the Paleogene sediments in the Pearl River Mouth Basin, northern South China Sea: Insights from zircon U-Pb and fission track double dating

机译：北部北部珠江口盆地古代沉积物的来源：Zircon U-PB和裂变轨道双约会的见容

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

The Paleogene provenance of the Pearl River Mouth Basin in the northern South China Sea is poorly understood. In this paper, we present the first batch of zircon U-Pb and fission track double-dating ages of the Wenchang, Enping, and Zhuhai Formations in this basin. Together with data from previous provenance studies, the new dataset has been used to document the provenance shift during the Paleogene period. Characterized by a rather limited spectrum of both U-Pb and fission-track ages, the Eocene Wenchang Formation was probably mainly derived from intra-basinal uplifts. Multimodal distribution and large range of zircon ages of the Late Eocene-Early Oligocene Enping Formation is compatible with the age signatures of modern drainage sediments from the Southeastern Cathaysia Block. Age signatures of the Zhuhai Formation (Late Oligocene) and Enping Formation are indistinguishable, suggesting that they may have similar source areas and sediment provenance did not change dramatically during the Oligocene. Although variations in age patterns from the Wenchang Formation to the Enping-Zhuhai Formations imply a dominant provenance shift from local uplifts to the regional Cathaysia Block, it is difficult to exclude the influence of the local uplifts on sediments in the Enping-Zhuhai Formations.
机译：南海北部珠江口盆地的古代源性差不多了解。在本文中，我们介绍了本盆中文昌，恩平和珠海地层的第一批锆石U-PB和裂变轨道双约会年龄。与以前的出处研究的数据一起，新数据集已被用于在古代期间记录出来的出处。特征在于U-Pb和裂变轨道年龄的相当有限的频谱，何时党的形成可能主要来自底座内隆起。多峰分布和大范围的初级寡烯烯烯烯烯烯烯烯烯烯的抗锆末末端形成与来自东南部的东南部地区的现代排水沉积物的年龄特征兼容。珠海地层（晚矿烯）和Enping形成的年龄签名是难以区分的，表明它们可能具有类似的源区，并且在寡核苷中的沉积物来源在寡核苷中不会发生巨大变化。虽然来自文昌地层的年龄模式的变化暗示了欧平珠肤的暗示局部隆起从地方隆起到区域正规革命的转变，但难以排除当地隆起对珠海地层沉积物的影响。

著录项

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