地球学报2011，Vol.32Issue(1)：46-56,11.DOI:10.3975/cagsb.2011.01.06
深地震探测揭示的华北及东北地区莫霍面深度
The Moho Depth of North China and Northeast China Revealed by Seismic Detection
摘要
Abstract
Since the 1970s, lots of research work on deep seismic detection has been conducted in North China and Northeast China. In this paper, the authors have summarized the results of the detection work, and discussed the Moho variation in this region. It is shown that in North China, the deepest Moho is beneath the Mongolia fold belt (48 km) and the shallowest Moho is in Bohai bay basin (28 km), whereas in the Northeast China, the deepest Moho occurs under Da Hinggan Mountains region (42 km), and the shallowest Moho is under the Yilan-Yitong (YY)fault zone (27 km). The Da Hinggan Mountains-Taihang Mountain gradient zone is a remarkable Moho variation belt, with the Moho depth being ＞40 km to its west and ＜37 km to its east; the Moho depth is shallower than that of its both sides along the Tan-Lu fault belt and the YY fault belt, and the Moho offsets exist under the Dunhua-Mishan fault zone; under the regions with outcropped basement rocks, the Moho is deeper than that of the adjacent basins; the Moho obviously deepens at the mountain front. All these features suggest that North China and Northeast China must have experienced the peri-Pacific tectonism, and the Da Hinggan Mountains-Taihang Mountain gradient zone limited the influence range of this tectonism.关键词
中国华北及东北地区/深地震探测/莫霍面深度/太平洋构造运动/地球动力学Key words
North and Northeast China/ seismic detection/ Moho depth/ peri-Pacific tectonism/ geodynamics分类
天文与地球科学引用本文复制引用
熊小松,高锐,张兴洲,李秋生,侯贺晟..深地震探测揭示的华北及东北地区莫霍面深度[J].地球学报,2011,32(1):46-56,11.基金项目
本文由国家自然科学基金项目(编号:40830316 （）
40874045)、科技部国际科技合作项目(编号:2006DFA21340)、国土资源部公益性行业基金(编号:200811021)、国土资源部科技创新项目(编号:1212010711813)及深部探测与实验研究专项(编号:SINOPROBE-02)、地质所基本科研业务经费(编号:J083 （编号:2006DFA21340）
J0916)联合资助. （）
