摘要
大地电磁（ＭＴ）测量结果揭示中下地壳较普遍存在高导层。迄今对高导层的成因解释已有多种假说。本文总结了这一领域近十几年来的大量研究成果，对可能的高导机制，特别是含水流体假说、粒间相互连通的碳薄膜假说及剪切带假说等进行了评述，并指出不存在全球性的普遍适用的模式。
Magnetotelluric measurements show that high conduction layers occurs extensively in the middle to lower continental crust.This paper summarices a number of studies of conduction mechanism in the past decade,reviews the major hypotheses of conduction mechanism, including the saline pore fluids,the interconnected thin films of graphite, and the shear zone,and points out that the change of lithosphere and tectonism is important for conduction mechanism.
出处
《地质科技情报》
CAS
CSCD
北大核心
1995年第3期15-22,共8页
Geological Science and Technology Information
关键词
中下地壳
高导层
含水流体
碳薄膜
剪切带
成因
middle to lower continental crust,high conduction layer,saline fluids,thin film of graphite,shear zone
