...
  • 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 >No evidence for a large Mesozoic overthrust in the Lantian area of Anhui Province, south China
【24h】

No evidence for a large Mesozoic overthrust in the Lantian area of Anhui Province, south China

机译：没有证据表明安徽省蓝田地区存在较大的中生代上覆推力

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

This paper presents new geological data from the Lantian area of Anhui Province, SE China, that contradict the hypothesis of the Lantian tectonic window—one of the key argument in Hsu's Mesozoic collision tectonic model for south China. The 1:50,000-scale geological mapping of the Lantian area -located along the eastern part of the Neoproterozoic Jiangnan Belt, confirms that the Sinian-Cambrian strata unconformably overlies the Pre-Sinian formations, and that they form a syncline preserved from early Paleozoic deformation. Pre-Sinian formations (including the Banxi Group distributed in the Jiangnan Belt) do not form a Mesozoic tectonic melange, but a normal Pre-Sinian stratigraphic sequence. The subsequent tectonic events only slightly transformed the structural framework of this area, which does not exhibit a tectonic window. Thus, these geological data call into question the model of 'Huanan Alps' that invokes large Mesozoic overthrust tectonics in south China. We believe that early Paleozoic tectonic activity has clearly affected the Sinian-Early Paleozoic formations in the Lantian area and given rise to the Jiangnan Belt.
机译：本文介绍了来自中国东南安徽省蓝田地区的新地质数据，该数据与蓝田构造窗的假说相矛盾。蓝田构造窗是徐华南中生代碰撞构造模型的关键论点之一。沿新元古代江南带东部的蓝田地区的1：50,000比例尺的地质图，证实了震旦纪-寒武纪地层不整合地覆盖了震旦纪前地层，并且它们形成了早古生代变形保存下来的向斜线。 。震旦纪前的地层（包括分布在江南地带的板溪群）不形成中生代构造混杂岩，而是正常的震旦纪前地层层序。随后的构造事件仅稍微改变了该区域的结构框架，没有显示出构造窗口。因此，这些地质数据使“华南阿尔卑斯山”的模型受到质疑，该模型在中国南部援引了大型中生代上覆构造。我们认为，早古生代构造活动明显影响了蓝田地区震旦纪-早古生代构造，并形成了江南带。

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