运城盆地相关块体运动学特征初步研究  

Preliminary Study on Kinematic Characteristics of Related Blocks in Yuncheng Basin

作　　者：郭春杉 李文巧[2] 闫小兵[3] GUO Chunshan;LI Wenqiao;YAN Xiaobing(China Coal Technology&Engineering Xi’an Research Institute(Group)Co.Ltd,Xi’an,Shanxi 710077,China;Institute of Earthquake Forecasting,CEA,Beijing 100036,China;Shanxi Earthquake Agency,Taiyuan,Shanxi 030021,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710077 [2]中国地震局地震预测研究所,北京100036 [3]山西省地震局,山西太原030021

出　　处：《山西地震》2024年第4期1-10,共10页Earthquake Research in Shanxi

基　　金：中国地震局地震预测研究所基本科研业务专项(2017IES010101、2018IEF0306);国家自然科学基金(41502204);中煤科工西安研究院(集团)有限公司科技创新项目(2022XAYJS07)。

摘　　要：运城盆地是典型的正断层和断陷盆地发育区,受断层的控制发育有中条山块体、峨眉台地块体和鸣条岗块体等北东向的主要隆升块体。通过对比分析盆地相关块体上大量钻孔(剖面)和古地磁等资料,结合相关断层活动速率,探讨研究区主要构造单元演化过程、运动方式,得出中条山块体、峨嵋台地块体、鸣条岗块体均发生顺时针的掀斜变形,其中峨嵋台地块体、鸣条岗块体抬升方式为由北东向南西方向抬升;上新世晚期中条山南北两侧平均掀斜量超过100 m,掀斜角度不大;控制块体边界断裂的活动量、活动速率与块体的隆起成正相关,初步讨论建立运城盆地构造模式图像。Yuncheng Basin is a typical development area of normal faults and fault basins.Under the control of faults,major uplift blocks such as Zhongtiaoshan block,Emeitai block and Mingtiaogang block are developed in northeast direction.Based on the comparative analysis of a large number of boreholes(profiles)and paleomagnetic data on the relevant blocks in the basin,combined with the relevant fault activity rate,the evolution process and movement mode of the main tectonic units in the study area are discussed.The following conclusions are obtained:Zhongtiaoshan block,Emei block and Mingtiaogang block all have clockwise tilting deformation;The Emitai block and Mingtiaogang block are uplifted in the direction of NE to SW.In the late Pliocene,the average tilt of the north and south sides of Zhongtiao Mountain is more than 100 m,and the tilt Angle is not large.The activity amount and activity rate of boundary faults controlling the block are positively correlated with the uplift of the block.The structural model image of Yuncheng Basin is preliminarily discussed and established.

关 键 词：运城盆地 块体 抬升方式 构造模式 

分 类 号：P315.24[天文地球—地震学]