用户名: 密码: 验证码:
Study Lithosphere Structure of Eurasian and the Surrounding Area by Surface Wave Method
详细信息   
摘要

///This paper deals with the high resolution surface wave tomography in Eurasia and its surrounding seas (20°W160°E, 20°S80°N). The results show that in Eurasia and its surrounding seas, the lithosphere thickness is from 4060 km (continental rift zone) to 190220 km (Craton region), the lithosphere velocity range is 4.304.80 km/s. Until 400 km depth, the various differences between the horizontal plate and block gradually decrease. In precambrian craton and block, the lithosphere is very thick and high VS, the asthenosphere is very thin or non-existent. In marginal sea and Phanerozoic orogenic regional, lithosphere is thin and low VS, the asthenosphere is very large. Distinctive features of oceanic plates is uncommonly high VS in lithosphere, and abnormally low VS in asthenosphere, the rate of mutation is very sharp in velocity-depth curves.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700