地学前缘 ›› 2012, Vol. 19 ›› Issue (2): 239-247.

• 论文 • 上一篇    下一篇

震动变形构造所表征的震积岩：以河北宣化中元古界高于庄组第三段为例

梅冥相   

  1. 中国地质大学(北京) 地球科学与资源学院, 北京  100083
  • 收稿日期:2008-04-10 修回日期:2011-12-13 出版日期:2012-03-25 发布日期:2012-03-25
  • 作者简介:梅冥相（1965—），男，博士，教授，博士生导师，沉积学和地层学专业。E-mail:meimingxiang@263.net
  • 基金资助:

    国家自然科学基金项目（40472065）；中国石油化工股份有限公司海相前瞻性项目（C080007ZS164）

A case study of the third member of Mesoproterozoic Gaoyuzhuang Formation in Xuanhua County of Hebei Province.

 MEI  Mian-Xiang   

  1. School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China
  • Received:2008-04-10 Revised:2011-12-13 Online:2012-03-25 Published:2012-03-25

PDF (PC)

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摘要：

地震变形构造主要包括小级别的张性或压性断层、不协调的软沉积物变形褶皱等，这些变形构造以震动变形作用为特点从而成为识别和定义地震岩的主要标志。在河北宣化一带的高于庄组第三段下部的白云质灰岩或灰质白云岩层之中，发育了极为典型的地震变形构造，包括层内断层、层内褶皱以及极为典型的碎裂角砾岩等。高于庄组第三段地震变形构造的发现，为探索和研究地震作用对沉积岩层的破坏和改造而区分于其他的事件沉积如海啸沉积和风暴沉积提供了极为重要的实例，也为更加深入理解高于庄组第三段非叠层石碳酸盐岩沉积序列的产出背景提供了重要资料。

关键词: 地震形成的变形构造, 高于庄组第三段, 中元古界, 河北宣化

Abstract:

Earthquakeinduced deformational structures mainly include the smallgrade tensional or compressional fault, the inconsistent fold of soft sediment, which are marked by shock deformation; thus, these structures become the main discerning marks for seismites. Many typical earthquakeinduced deformational structures developed in the third member of Mesoproterozoic Gaoyuzhuang Formation in Xuanhua County of Hebei Province, and these structures include the obvious intrastratal fault, the intrastratal fold and the cataclastic breccia and so on. The earthquakeinduced structure in the third member of Mesoproterozoic Gaoyuzhuang Formation provides an important example for both the study on not only the reconstruction and the destruction of depositional rock beds generated by earthquake but also the distinguishability from other event deposits such as the storm and the tsunami deposits, and also provides an important information for the formation setting of the third member of Gaoyuzhuang Formation that is marked by a nonstromatolitic succession of the Precambrian.

 

Key words: earthquakeinduced deformational structure, third member of Gaoyuzhuang Formation, Mesoproterozoic, Xuanhua County of Hebei Province

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