|
|||||
|
|
| 新疆境内塔拉斯-费尔干纳断裂早侏罗世走滑的古地震证据 | |
| 引用本文： | 乔秀夫,李海兵,王思恩,郭宪璞,司家亮,宗文明.新疆境内塔拉斯-费尔干纳断裂早侏罗世走滑的古地震证据[J].地质学报,2008,82(6). |
| 作者姓名： | 乔秀夫 李海兵 王思恩 郭宪璞 司家亮 宗文明 |
| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037 2. 中国地质科学院地质研究所,北京,100037;国土资源部大陆动力学重点实验室,北京,100037 3. 中国地质科学院地质研究所,北京,100037;中国地后大学地球科学与咨源学院,北京,100083 |
| 基金项目： | 中石化集团公司前瞻性基础研究项目 |
| 摘 要： | 在野外考察过程中,于新疆乌恰地区早侏罗世康苏组沼泽相砂岩层中,发现并识别出软沉积物液化变形层,变形包括负载构造,球-枕构造及卷曲变形构造。通过模拟试验的对比研究认为,该软沉积物变形机制与液化作用有关,触发沉积物液化的动力是古地震,并且根据地震震级与液化最大震中距的关系,推测出造成早侏罗世软沉积物变形的里氏地震震级为6 |
| 关 键 词： | 古地震 早侏罗世 软沉积物液化变形 球-枕构造 塔拉斯-费尔干纳断裂 新疆 |
Paleoseismic Evidence of the Talas-Ferghana Strike-Slip Fault during Early Jurassic, Xinjiang |
|
| QIAO Xiufu,LI Haibing,WANG Sien,GUO Xianpu,SI Jialiang,ZONG Wenming.Paleoseismic Evidence of the Talas-Ferghana Strike-Slip Fault during Early Jurassic, Xinjiang[J].Acta Geologica Sinica,2008,82(6). | |
| Authors: | QIAO Xiufu LI Haibing WANG Sien GUO Xianpu SI Jialiang ZONG Wenming |
| Abstract: | During the field work,soft-sediment deformation structures in lower Jurassic Kangsu Formation lacustrine deposits were recognized in the northern part of Wuqia,western Xinjiang Uygur Autonomous Region.Deformation structures are represented by load cast,ball-and-pillow structure and convolute lamination.The mechanism of deformation is related to liquefaction and or fluidization triggered by a paleoseismic event by comparing with the simulation test.According to the correlation between the earthquake magnitude and the maximum epicentral distance of liquefaction,the magnitude producing the lower Jurassic soft-sediment deformation can be predicted as 6 |
| Keywords: | Xinjiang Paleoseisms Early Jurassic soft-sediment deformation load cast ball-and-pillow Talas-Ferghana Fault |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《地质学报》浏览原始摘要信息 | |
| 点击此处可从《地质学报》下载免费的PDF全文 | |