莫霍面的性质及力学特征与找矿

PROPERTIES AND THERMAL AND DYNAMICAL FEATURES OF MOHO

莫霍面是地球内部的最明显的两个一级速度间断面之一,也是地球内部最接近地球表面的全球性分界面,与人类的生存环境关系最为密切,也是最有可能与地表观察的结果相联系。自从莫霍面被发现之后,在全球性或区域性研究上都备受关注,对其界面性质的确定经过了近一个世纪,相变界面还是化学界面,仍处于争论之中。莫霍面的埋藏深度及其性质的横向不一致,在全球尺度上显示得很明显,大体与地表所见的陆—洋分布相关。本文综述了莫霍面的性质、岩石学特征、地球化学元素分布及其热力学、动力学特征,并讨论了莫霍面与找矿的关系。

The main study of this paper is about the properties and features of Moho.Moho discontinuity is one of the two primo-velocity discontinuity and the nearest global interface to the obverse of the Earth.We can connect the phenomenon obtained with Moho discontinuity,which is the principle of facts to the existent environment of human being.In the development of Earth Science,scientists pay more attention to the research of Moho.As a result,there are much more progress in the global or regional research.After the found of Moho,the more attention is paid to solving the problem of ascertaining the property of Moho.From the statement of the latest research,the notion that Moho is a physical interface is accepted by most people.At present,some scientists found the depth of Moho is about 0.5km to a few kilometers.But the burying depth and properties of Moho is very inconsistent in transverse direction.This phenomenon which is very obvious in the inner Earth is connected with the location of the Continents and Oceans.We can attain more information from the researching of the features of rocks,elements,thermodynamic and dynamic of Moho discontinuity.