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本文对地球动力学现状作了简短的回顾。它的基本设想是假定地球是一个动力体,地壳和地幔运动为其内部热所趋使。这一现代地球动力学的新设想用于中国板块,并对攀——西(攀枝花——西昌)裂谷作了特殊的分析。指出造山运动、金属矿床和油田的形成以及地震的发生,可考虑用两个主应力场来解释:第一个主应力场为印度板块及太平洋板块向中国板块的推挤作用所形成;第二个主应力场为地幔内部热对流作用所引起。本文指出,从科莫林角(Cormorin Cape)经云南、四川、山西直至贝加尔湖,在地壳中有一个相应的拉伸带,可以假定大约在几亿年以前这些拉伸力曾经促使了裂谷的张开,而现在由于推向中国板块和缅甸的力所形成的侧向变形而使它正在闭合中。据分析,以渡口为中心、半径约为250公里的区域内,岩浆从地幔上涌。这一机制可考虑是该区矿产资源和高温形成的原因。
This article briefly reviews the state of geodynamics. Its basic assumption is that the earth is assumed to be a motive body, and the movement of the crust and the mantle is driven by its internal heat. This new concept of modern geodynamics is used for the Chinese plate and gives a special analysis of the Pan-West (Panzhihua-Xichang) rift. Pointing out that the orogenic movement, the formation of metal deposits and oil fields, and the occurrence of earthquakes can be explained by two principal stress fields: the first is due to the push of the Indian plate and the Pacific plate to the Chinese plate; the second The main stress field is caused by the thermal convection inside the mantle. This paper points out that there is a corresponding stretching zone in the earth’s crust from Cormorin Cape through Yunnan, Sichuan and Shanxi to Baikal Lake. It can be assumed that these tensions have caused the rifting about 100 million years ago But now it is being closed due to the lateral deformation caused by the forces pushing China’s plate and Burma. According to the analysis, the ferry lasted from the mantle up to a radius of about 250 km centered on the ferry crossing. This mechanism can be considered as the reason for the formation of mineral resources and high temperatures in the area.