下辽河盆地外围深部构造特征及中生代构造演化模式  

DEEP TECTONIC FEATURES AND MESOZOIC TECTONIC EVOLUTION IN THE PERIPHERY OF XIALIAOHE BASIN

作　　者：王东坡[1] 薛林福[1] 许敏 刘立[1] 

机构地区：[1]长春科技大学地球科学学院

出　　处：《长春地质学院学报》1997年第4期369-374,共6页

摘　　要：深部地质、地球物理综合研究表明，辽西地区与松辽南部地区在莫霍面起伏、岩石圈厚度、壳内高导层深度和分布形式及岩石圈的有效弹性厚度方面均存在着重大差异，这种差异是造成辽西盆岭区与松辽盆地中生代构造发展差异的主要原因。软流圈顶面深度和岩石圈有效弹性厚度决定了盆地类型，壳内高导层分布控制着盆地构造样式。辽西盆岭区和松辽盆地南部构造模式的差异可以解释二者之间构造演化的不同。Comprehensive studies on the deep geology and geophysics indicate obvious differences between the Liaoxi basin range region and the southern part of Songliao Basin in the undulate of Moho surface, the thickness of lithosphere, the depth and the distribution of high conductive layer in the crust as well as the effective elastic thickness in the lithosphere. Such differences are the main reason for the different Mesozoic basin evolution between Liaoxi basin range region and the southern part of Songliao Basin. The depth of asthenospheric top surface and elastic thickness of lithosphere determine the type of basins and the distribution of high conductive layers in crust controbthe tectonic style of the basins. The difference of structural model between Liaoxi basin ridge region and the southern part of Songliao Basin can explain the differences in their tectonic evolution.

关 键 词：盆地 深部构造 中生代 构造演化模式 

分 类 号：P542.3[天文地球—构造地质学] P547[天文地球—地质学]