• 首页
  • 学报简介
  • 编委会
  • 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(2)   不支持(0)

活动走滑断裂上断塞塘沉积特征及其构造含义
投稿时间:2009-05-14  修订日期:2009-07-21  点此下载全文
引用本文:李传友,张培震,袁道阳,王志才,郑德文.2010.活动走滑断裂上断塞塘沉积特征及其构造含义[J].地质学报,84(1):90-105.
Li Chuanyou,Zhang Peizhen,Yuan Daoyang,Wang Zhicai,zheng de wen.2010.Characteristics of the sediments in sag-pond on the active strike slip fault and its tectonic implications[J].Acta Geologica Sinica,84(1):90-105.
DOI:
摘要点击次数: 2209
全文下载次数: 2244
作者单位E-mail
李传友 中国地震局地质研究所 chuanyou@ies.ac.cn 
张培震 中国地震局地质研究所  
袁道阳 中国地震局兰州地震研究所  
王志才 山东省地震局  
郑德文 中国地震局地质研究所  
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:活动断裂与地震和地质灾害紧密相关,对与其相关的沉积记录进行研究可以认识其活动习性与规律。通过揭露并分析典型断裂地貌--断塞塘的沉积建造特征,能够帮助识别活动走滑断裂作用的信息。选取青藏高原东北缘的西秦岭北缘断裂带黄香沟段,利用组合探槽对沿其发育的断塞塘及其沉积进行研究,分析其沉积特征,并建立断塞沉积序列。研究发现:断塞塘沉积层序由几个沉积韵律组成,一个沉积韵律组合分为下部的粗粒层与上部的细粒层,粒度下粗上细;粗粒层一般为细砂、粗砂和砾石层,具快速堆积的特征;细粒层均为含炭的粘土、亚粘土和粉砂,具湖塘相沉积的特点。断塞沉积层序是分期的,一个沉积韵律组合是一期沉积。分析认为,断塞沉积由粗变细的韵律性结构是断裂周期性活动的产物。这一研究是揭示走滑断裂的构造演化与活动习性,反演断裂走滑活动历史并预测其未来行为的基础。
中文关键词:活动走滑断裂 断塞塘 沉积序列 韵律结构 断裂活动
 
Characteristics of the sediments in sag-pond on the active strike slip fault and its tectonic implications
Author NameAffiliationE-mail
Li Chuanyou Institute of Geology, China Earthquake Administration chuanyou@ies.ac.cn 
Zhang Peizhen Institute of Geology, China Earthquake Administration  
Yuan Daoyang Lanzhou Institute of Seismology, China Earthquake Administration  
Wang Zhicai Shandong Earthquake Administration  
zheng de wen Institute of Geology, China Earthquake Administration  
Abstract:The active faulting is closely related to the earthquake and geologic hazard. Study on the relevant deposits can help to understand the active behavior and pattern of an active fault. By disclosing the sedimentary formation of typical faulted landform, the sag-pond, can learn about the record of active strike-slip faulting by sag-ponding deposits. By disclosing a representative sag-pond with 3-D excavation along the Huangxianggou segment of the active West Qinling fault in noreastern Tibet Plateau, depositional features of the sag-pond are analized, and the sag-ponding sequence is constructed. Study shows, the stratigraphic sequence exhibits good rhythms in each pond. One rhythm is composed of the lower coarse layers and the upper fine layers, and the grain size is coarser below and finer upward. The coarse layers are commonly constituted by fine sand, coarse sand and gravels, which suggests a fast depositing. The finer layers generally consist of carbonaceous clay, mild clay and silty sand, showing characteristics of lacustrine sedimentation. The sag-ponding deposition sequence is multi-staged, and one deposition rhythm corresponds to a series of formation deposited in a period. Observations indicate that the deposition rhythms are concerned with the periodic behavior of the faulting. This study is a basis on revealing the tectonic evolution and active pattern, deducing the strike-slipping history and forecasting the future behavior of a strike-slip fault.
keywords:Active strike-slip fault, sag-pond, deposition sequence, rhythmic structure, active faulting
查看全文  查看/发表评论  下载PDF阅读器
您是第17716833位访问者  京ICP备05032737号-7  京公网 安备110102004559
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:010-68312410,010-68999025 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