渤海第三纪裂谷扩张的地球物理分析  

GEOPHYSICAL ANALYSIS ON THE TERTIARY RIFT VALLEY EXPANDING OF BOHAI SEA

作　　者：刘光夏[1] 赵文俊[2] 李志雄[2] 张先[1] 

机构地区：[1]国家地震局地球物理勘探中心 [2]海南省地震局

出　　处：《西北地震学报》1996年第3期18-24,共7页Northwestern Seismological Journal

基　　金：地震科学联合基金

摘　　要：根据重磁计算的结果，对渤海第三纪裂谷扩张问题做了分析。在研究中还注意参考了渤海地热流和地壳上地幔电性高导层抬升的研究成果。认为由于深部岩浆的上涌，在渤海及其相邻的陆地共有渤中、渤海湾、庙西、辽东湾和垦利５个较大的地幔柱拱起，它们在华北新生代拗陷区形成了一个走向明显、形态独特。In this paper, an analysis has been carried out on the problem of the Tertiary Rift Valley Expanding of Bohai Sea based upon gravity aeromagnetic calculation. Some research results from geothermal heat flow values and the electrical high conductivity layer's upwelling in crust and upper mantle have been referenced in the study. It is considered that there were five big mantle upwellings such as Bozhong, Bohai Bay, Miaoxi, Liaodong Bay and Kenli etc. in the Bohai Sea and its surrounding continent, which formed a group of mantle plumes with clear strike , distinctive shape, big scope and relative assembling character in Cenozoic down warping region of North China due to the deep seated magma's upmotion.

关 键 词：渤海 第三纪 裂谷作用 地幔对流 热柱 地球物理 

分 类 号：P534.61[天文地球—古生物学与地层学]