In this work,the vertical deformation,horizontal displacement,and stress fields of arcuate tectonics are theoretically derived from the horizontal tectonic stress; then the characteristics of tectonic movement,seismic...In this work,the vertical deformation,horizontal displacement,and stress fields of arcuate tectonics are theoretically derived from the horizontal tectonic stress; then the characteristics of tectonic movement,seismicity,and focal mechanism of arcuate tectonics of the entire world are explained.It is pointed out that the island arc and other arcuate tectonics are gradually developed under the displacement and stress fields of the arcuate tectonics and that the under-thrusting action of the ocean plate is secondary.The distance formulas between the volcanic arc and the trench are suggested and also that theoretical results are consistent with actual data.展开更多
In this paper, based on the large scale uplift, lateral inhomogeneity and low interface velocity along the Moho as well as the soft low velocity layer under it obtained from deep seismic sounding (DSS), we deduced tha...In this paper, based on the large scale uplift, lateral inhomogeneity and low interface velocity along the Moho as well as the soft low velocity layer under it obtained from deep seismic sounding (DSS), we deduced that the southern region of North China Plain is characterized by continental rift and abnormal mantle in the lithosphere.Summarizing geological and geophysical data, we try to state that the forming and developing of abnormal mantle and the intermittent activity of asthenosphere are the dynamic sources to dominate the geologic structure and tectonic movement in this region. We also point out that the research of deep process is important to probe timespace law of earthquake occurrence.展开更多
文摘In this work,the vertical deformation,horizontal displacement,and stress fields of arcuate tectonics are theoretically derived from the horizontal tectonic stress; then the characteristics of tectonic movement,seismicity,and focal mechanism of arcuate tectonics of the entire world are explained.It is pointed out that the island arc and other arcuate tectonics are gradually developed under the displacement and stress fields of the arcuate tectonics and that the under-thrusting action of the ocean plate is secondary.The distance formulas between the volcanic arc and the trench are suggested and also that theoretical results are consistent with actual data.
文摘In this paper, based on the large scale uplift, lateral inhomogeneity and low interface velocity along the Moho as well as the soft low velocity layer under it obtained from deep seismic sounding (DSS), we deduced that the southern region of North China Plain is characterized by continental rift and abnormal mantle in the lithosphere.Summarizing geological and geophysical data, we try to state that the forming and developing of abnormal mantle and the intermittent activity of asthenosphere are the dynamic sources to dominate the geologic structure and tectonic movement in this region. We also point out that the research of deep process is important to probe timespace law of earthquake occurrence.
