摘要
根据青藏高原地壳厚度，采用平衡剖面法对地壳伸缩量进行了粗略的计算，表明其水平缩短约 １４００ｋｍ ， 垂直方向伸张约 ３０ｋｍ 或２５ｋｍ 。如此巨大的地壳伸缩量证明了青藏高原地壳为弹粘性体， 绝非所谓的刚性板块。
The amount of extension and shortening of the crust of the Qinghai Tibet plateau is roughly calculated from its thickness using the method of balanced section.The results show that it has shortened about 1400km in the N S direction and extended 25～30km in the vertical direction.Such a tremendous shortening and extension may indicate that the crust of Qinghai Tibet plateau behaves as a elasto viscous rather than rigid body.
出处
《地质力学学报》
CSCD
1999年第3期8-12,共5页
Journal of Geomechanics
关键词
青藏高原
地壳伸缩
弹粘性体
力学性质
Qinghai Tibet plateau
Crustal shortening extension
Elasto viscous body
non elastic deformation
rigidity plateau
