雪峰古陆地区深部地质构造探讨  

THE DEEP GEOLOGICAL STRUCTURE IN THE XUEFENG OLD LAND AREA

作　　者：范小林 陆国新 蒋洪堪 江兴歌 

机构地区：[1]地矿部石油地质中心实验室

出　　处：《西安地质学院学报》1994年第1期40-46,共7页

基　　金：国家自然科学基金

摘　　要：笔者收集区内已有的深部物探成果，辅以野外（区域）地质资料，建立地质－地球物理模型，由布格重力异常曲线与其进行人机交互联合解释，探讨该地区深部地质构造．结果表明：①雪峰地区壳内存在古老异地块，残留古洋壳及隐伏古构造侵位岩脉群；②中新生代板内形变使该地区岩石圈发生缩短作用，在地壳浅部形成非对称扇形构造形变体．The geological-geophysical model was built up according to the existing deep geophysical explorative results as well as field geological information. From gravity anortnaly curves and interactive computer sessionthe deep gtological structure was discused.As a result of study:①There are old allochthon,residual oceanic crust and buried intrusive of paleotectonics of intracrust in area of Xuefeng. ②The tectonically deformed layers as a merosymmetry fan composedof shallow crust by the action of compression deformation of intraplate in the lithosphere during the MesoCenozoic.

关 键 词：雪峰地区 深部地质构造 古陆壳 

分 类 号：P542.5[天文地球—构造地质学]