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.

發文機構：Institute of Geomechanics Department of Geosciences Faculty of Earth Sciences

關鍵詞：壓力梯度地熱變質巖巖石圈lithospherepressure gradientgeothermal gradientultrahigh pressure metamorphic rock

分類號： P314[天文地球—固體地球物理學][天文地球—地球物理學]