摘要
前陆盆地是典型的压性盆地，其形成机制和弹性板一端固定、另一端加压所产生的弯矩挠曲变形相似。据此，本文利用岩石圈弹性板挠曲模型，计算了由逆掩推覆体和沉积层负荷作用引起的岩石圈的挠曲沉降量，拟合前陆盆地的构造沉降和沉积厚度。本方法可为前陆盆地的地球动力学分析提供一杆有效的研究手段。
Foreland basin is a typical compressional basin. Its generation mechanism is similar to the mechanism of bending moment fie-cural deformation that is caused by fixing one end of an elastic plate and pressurizing the another end. Hence,we use flexural model of lithospheric elastic plate to estimate the lithospheric flexural subsidence which was caused by the loads of overthrust nappe and sedimentary formations,and to fit both the tectonic subsidence and the sediment thickness in foreland basin. The method offers an effective research means for geodynamic analysis of a foreland basin.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1996年第5期699-703,共5页
Oil Geophysical Prospecting
关键词
前陆盆地
地球动力学
构造沉降
沉降
构造运动
foreland basin,geodynamics, tectonic subsidence,subsidence mechanism
