基于位场信息的伊舒地堑莫里青断陷西北缘断裂性质  

A Study on the Characteristics of the Western Margin Faults of Moliqing Faulted Depression in Yishu Graben Based on Potential Field Information

作　　者：刘万崧[1] 周云轩[1] 卢炎 许惠平[2] 

机构地区：[1]吉林大学地球探测科学与技术学院,吉林长春130026 [2]同济大学海洋与地球科学学院,上海200092

出　　处：《吉林大学学报（地球科学版）》2005年第S1期42-46,共5页Journal of Jilin University：Earth Science Edition

摘　　要：伊舒地堑边缘断裂不仅控制了盆地的空间形态,而且在很大程度上控制了盆地的结构、构造发育特征和盖层沉积。本文利用1∶5万重、磁资料研究了地堑内莫里青断陷西北缘断裂性质,得出了区内NE—SW向断裂为边界主断裂,呈现出张性特征,属高角度正断层,近EW向断裂,呈现出压性特征,属高角度逆断层的结论。The marginal faults of the Yishu Graben control not only the spatial appearance of the basin,but also the structure,tectonic development and overlay deposition.This article elaborates the fault characteristics along the western margin of Moliqing Faulted Depression in Yishu Graben.It concludes that the NE-SW striking faults are the principal boundary faulting which shows a tensional property.The boundary faults are of normal faults with steep dip angles.The faults of near EW striking are of thrust faults wi...

关 键 词：伊舒地堑 西北缘断裂 重力异常 磁异常 正演模拟 

分 类 号：P542.32[天文地球—构造地质学]