摘要
文中首先给出了中国大陆上地幔高导层埋深图 ,对其物理成因作了解释。然后给出了中国大陆壳内高导层分布埋深图 ,因人们对壳内高导层的成因有多种看法 ,所以文中进行了讨论 ,并认为卤水成因说更有说服力。文中对壳内与上地幔高导层构造成因作了简要阐述。最后 ,由于壳内和上地幔高导层分布埋深与强地震的分布有密切的关系 ,所以作为实例 ,文中给出了唐山地区地壳结构 ,阐述了地壳内深部流体在地震中的作用 ,并给出了主要证据。
The depth of upper mantle high-conductive layer in Chinese mainland is presented and a cause of its formation is given. Then the distribution and depth of the high-conductive layer of the earth’s crust in Chinese mainland is shown in the paper. On account of the existed several opinions on the high-conductive layer of the earth’s crust, a rather detail analysis is given and saline fluids are considered being a most possible reason. Geological structure causes of the high-conductive layer of the earth’s crust and upper mantle are briefly explained here. Finally, because there exists a close relationship between the distribution and the depth of the high-conductive layers of earth’s crust and upper mantle and the distribution of strong earthquakes, as an example, the crust geology structure of Tangshan region is presented and the effect of deep-seated fluids on the occurrence of the earthquake is discussed with some evidences.
出处
《地学前缘》
EI
CAS
CSCD
2003年第U08期101-111,共11页
Earth Science Frontiers
关键词
高导层
地震
深部流体
high-conductive layer
earthquake
deep-seated fluids
