...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine and Petroleum Geology >Carbonate platform-margin architecture and its influence on Cambrian-Ordovician reef-shoal development, Tarim Basin, NW China
【24h】

Carbonate platform-margin architecture and its influence on Cambrian-Ordovician reef-shoal development, Tarim Basin, NW China

机译：塔里木盆地碳酸盐岩台缘构造及其对寒武-奥陶系礁滩发育的影响

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

Six types of carbonate platform marginal slope have been identified in the Cambrian-Ordovician of Tarim Basin. These include a progradational carbonate ramp platform, a progradational carbonate rimmed platform, an aggradational rimmed carbonate platform, a retrogradational rimmed carbonate platform, an aggradational margin on an isolated carbonate platform and a retrogradational margin on a submerged carbonate platform. Various platform margin architectures and reef-shoal characteristics occur in different areas of the Tarim basin. A progradational carbonate ramp platform margin began in the Early Cambrian in the Tarim basin. A progradational rimmed platform margin developed in the Middle Cambrian time in the northern Tarim basin, whereas contemporaneously a progradational ramp platform margin developed in the southwestern and central Tarim basin. A retrogradational rimmed carbonate platform developed in the northern Tarim basin, whereas an aggradational rimmed carbonate platform occupied the central Tarim basin in the Early Ordovician time. An aggradational margin on an isolated platform and a retrogradational margin on a submerged platform developed mainly during the Late Ordovician in the central Tarim basin. Platform margin-slopes migrated continually throughout the Cambro-Ordovician. The broad platform area (western Tarim Platform) that occupied most of the northwestern and central Tarim Basin in the Early Cambrian time was split by an east-west oriented shelf seaway that began to develop along the eastern and western margins of the platform in the Early Ordovician time and completely transected the platform by Late Ordovician time. The resultant central Tarim Basin platform area was much reduced, elongate east-west around the Central Tarim paleo-uplift, and terminated eastward towards region of the Late Ordovician basinal deposition across the eastern Tarim Basin. Affected by platform margin structure, Climate and paleo-depth, algal reefs and shoals developed mainly in the Cambrian, and intraclastic shoals developed mainly in the Early Ordovician, followed by reef-building of framestone or bafflestone in the Late Ordovician. (C) 2015 Elsevier Ltd. All rights reserved.
机译：塔里木盆地寒武-奥陶纪已发现六种碳酸盐台地边缘斜坡。这些包括渐进的碳酸盐斜坡平台，渐进的碳酸盐有框平台，渐进的有边缘碳酸盐平台，渐进的有缘碳酸盐平台，孤立的渐进碳酸盐平台上的凝集边缘和淹没的渐进碳酸盐平台上的渐进边缘。塔里木盆地的不同区域出现了各种平台边缘构造和礁滩特征。塔里木盆地早寒武纪开始有渐进的碳酸盐岩斜坡平台边缘。塔里木盆地北部寒武纪时期形成了渐进的有缘台缘，而塔里木盆地的西南部和中部则形成了渐进的斜坡状台缘。塔里木盆地北部发育了一个渐进带状碳酸盐岩台地，而奥陶纪早期则是一个塔里木盆地中部的一个聚集性有缘碳酸盐岩台地。塔里木盆地中部的奥陶纪晚期在孤立的平台上有一个沉降边缘，而在一个淹没的平台上有一个后沉降边缘。台缘边缘斜坡在整个坎布罗-奥陶纪不断地迁移。寒武纪初期占据塔里木盆地西北部和中部大部分地区的广阔台地（西塔里木台地）被东西向的陆架海道所分割，该东西架海道于上世纪初开始沿台地的东西边缘发展奥陶纪时间并在奥陶纪晚期完全横断了平台。由此产生的塔里木盆地中部台地面积大大减少，在塔里木中部古隆起周围东西向拉长，并向东终止于塔里木盆地东部的奥陶纪盆地沉积区。受平台边缘结构的影响，气候和古深度，藻礁和浅滩主要发生在寒武纪，而碎屑岩浅滩主要发生在奥陶纪早期，随后在奥陶纪晚期建造了框架石或折流石的礁石。 （C）2015 Elsevier Ltd.保留所有权利。

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