摘要
作为板块运动的驱动力“地幔对流”假说,仍然是当代地球科学中一个亟待解决的全球性重大课题。近廿多年来,为什么该假说从理论到观测仍得不到肯定的结论,作者认为其原因主要是研究该课题的着眼点有问题。到目前为止,几乎全部有关板块运动驱动力源的研究,都把着眼点集中在地球内部。 作者的思路恰恰相反,从地球外部寻求驱动板块运动的力源,根据地壳“轧展效应”假说,太阳及其地球的运行规律正好组成一个类似一般轧制的“轧机”,地壳像“轧件”一样在“轧制力”(光压)的作用下必将受到“轧制”并在其地壳内部产生应力、应变和应力波。作者分析了地壳“板带”内产生的应力、应变和应力波的传递方向和分布特征,并以此理论从成因机制上解释了如非洲大裂谷的形成。太平洋的海底扩张及其特征、大陆漂移(非洲与南美洲之间距离的增加)等地球科学中的重大问题。
As a driving force of the plate movement, 'the mantle convection' hypothesis is still a worldwide major subject demanding prompt solution in modern earth science. In the last 20 years, why isn't this hypothesis confirmed yet in theory and observation? The authof here consider that the main reason is that the starting point of studying this subject is quetionable. Up to now, almost all researches of the driving force source of the plate movement concentrate the strarting point at the earth interior.The author's thinking is on the contrary, he seeks the force source driving the plate movement from the earth exterior. According to the crustal 'rolling-extending effect' hypothesis, the movement laws of the Sun and the Moon look like a 'rolling mill', the crust like a rolling piece, which is 'rolled' under the action of 'rolling force' (light pressure) and stress, strain and stress waves inside the earth are produced. The author analyzed the transmission direction and distribution features of stress, strain and stress waves produced inside the crustal 'plate band' and based on this theory, explained major problems in the earth science such as the formation of the African rift valley, sea-floor spreading of the Pacific Ocean and its characteristics, and the cintinental drift (the increase of the distance from Africa to South America) in genetic mechanism.
出处
《地震》
CSCD
北大核心
1992年第1期41-47,共7页
Earthquake
