PRESSURE GRADIENT FROM THE CONTRIBUTION OF BOTH GEOTHERMAL AND GRAVITY IN THE LITHOSPHERE

作者：HU Baoqun,LU Guxian,WANG Fangzhang,SUN Zhanxue,LIU Chengdong,BAI Lihong

摘要：The pressure gradient of the lithosphere is a key to explaining various geological processes, and varies also in time and space similar to the geothermal gradient. In this paper a correlation formula of geothermal gradients and pressure gradients was built with the thermocomprestion coefficients. Based on this formula, the article has studied the relation between the pressure gradients and the geothermal gradients in the lithosphere, and the results indicate that the pressure gradient in the lithosphere is nonlinear, and its minimum value is the lithostatic gradient, and that the pressure gradient of the lithosphere will increase obviously with the contribution of both geothermal and gravity, and could be twice times more than the lithostatic gradient.

发文机构：Institute of Geomechanics Department of Geosciences Faculty of Earth Sciences

关键词：压力梯度地热变质岩岩石圈lithospherepressure gradientgeothermal gradientultrahigh pressure metamorphic rock

分类号： P314[天文地球—固体地球物理学][天文地球—地球物理学]