吉林东南部区域地球物理场及岩石圈结构特征  

Regional geophysical field of the southeastern part of Jilin Province and lithospheric structural characteristics

作　　者：宋绍军[1] 丁雷[1] 吕华[1] 罗长青[1] 明冠辉 姜丽英[1] 

机构地区：[1]吉林省勘查地球物理研究院,吉林长春130012

出　　处：《吉林地质》2004年第4期56-59,共4页Jilin Geology

摘　　要：吉林东南部重力场呈现东南低、西北高的场值特征,等值线走向以北东向及北西向为主,航磁异常轴向亦有北东及北西两个方向,反映出老的构造格局与新构造叠加的特点。计算得出的莫霍面及康氏面均为西北深,东南浅。尤其长白地区独特的弧形幔凹以及东西、南北走向的断裂构造,显示出有别于其它地区的形成、演化特征。The gravity field in the southeastern part of Jilin Province shows field characteristics of the low southeast and high northwest; the isometric lines are mainly east-north and west-north striking; the aeromagnetic anomalous axis has two directions (east-north and west-north), showing the old structural frameworks and the characteristics of the neotectonic superimposition.The Mohole and Conrad are calculated, showing the characteristics of the deep northwest and the low southeast. Especially, the unique circular mantle-concave in the Changbaishan area, and NW, SN-trending faulted structures , which shows special evaluative characteristics.

关 键 词：岩石圈结构 地球物理场 东南部 莫霍面 航磁异常 构造格局 演化特征 吉林 区域 西北 

分 类 号：P542[天文地球—构造地质学] P315[天文地球—地质学]