• 首页
  • 学报简介
  • 编委会和伦理
  • 投稿指南
  • 订阅指南
  • 过刊浏览
  • 在线投稿
  • 联系我们
  • 网络预出版
  • English

本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(1)   不支持(0)

扬子地块泥盆纪—石炭纪古地磁新结果及其古地地理意义
  修订日期:2000-09-25  点此下载全文
引用本文:张世红,朱鸿.2001.扬子地块泥盆纪—石炭纪古地磁新结果及其古地地理意义[J].地质学报,75(3):303-313.
.2001.New Paleomagnetic Results from the Devonian-Carboniferous Successions in the Southern Yangtze Block and Their Paleogeographic Implications[J].Acta Geologica Sinica,75(3):303-313.
DOI:
摘要点击次数: 1601
全文下载次数: 1204
附件
张世红  朱鸿
中国地质大学,北京,100083
基金项目:科技部攀登计划,科技部攀登计划,中国科学院资助项目,95-专-04,8502208,40032010-B,,,
中文摘要:本文通过对扬子地块西南缘贵州独山-平塘地区泥盆-石炭纪316块定向岩心样品的系统退磁处理,揭示出晚侏罗世、新生代两期重磁化成.73个岩心样品,分布在早一中泥盆世(17个)、晚泥盆世(25个)、早石炭世(24个)和中-晚石炭世(7个)4个统计单元,得到了最可能的原生剩磁。结合已有的古地磁数据,修订了扬子地块极移曲,纯利 移曲线拟合的结果表明,扬子地块在早古生代是冈瓦那大陆的组成部分,与印度-喜马拉雅-澳大利亚地区临近。晚泥盆世、冈瓦那大陆发生大规模顺时针旋转,扬子地块开始与之分离。
中文关键词:扬子地块 泥盆纪-石炭纪 古地磁 冈瓦那大陆 地层构造 极移曲线
 
New Paleomagnetic Results from the Devonian-Carboniferous Successions in the Southern Yangtze Block and Their Paleogeographic Implications
ZHANG Shihong,ZHU Hong,MENG XiaohongSchool of the Earth and Land Resources,China University of Geosciences,Beijing,100083
Abstract:A total of 316 oriented core samples collected from the Devonian-Carboniferous carbonate strata from the southern Yangtze block in the southern Guizhou Province were subjected to stepwise demagnetization. After removing the recent and Late Jurassic overprint components, inferred primary magnetic remnants was isolated from 73 samples in four rock units. There are 17, 25, 24 and 7 samples in the Early-Middle Devonian, Late Devonian, Early Carboniferous and Middle-Late Carboniferous respectively. With the available data, we have revised the apparent polar wander path (APWP) of the Yangtze Block. By APWPs fitting, it is suggested that the Yangtze block was part of Gondwana during the Early Paleozoic and Early-Middle Devonian, and located along the Great India-Australia margin of Gondwana. In the Late Devonian, the Yangtze block began to separate from the supercontinent as Gondwana significantly rotated clockwise.
keywords:Yangtze block,Devonian-Carboniferous,paleomagnetism,Gondwana,
查看全文  查看/发表评论  下载PDF阅读器
您是第116415344位访问者  京ICP备05032737号-7  
版权所有:《地质学报》中文版
主管单位:中国科学技术协会 ; 主办单位:中国地质学会
地  址: 北京市西城区百万庄大街26号; 邮编:100037 ; 电话:010-68999025; E-mail: dizhixuebao@163.com
本系统由北京勤云科技发展有限公司设计 

京公网安备 11010202007916号

WeChat