Balanced Cross Section and Three-Dimensional Structural Analysis of the Northridge Earthquake Thrust System

这项研究将生成横跨Santa Susana山背斜的11个平衡的、可恢复的横截面，以及同一地区的一系列地下结构图。这些剖面将被恢复到大约3 Ma，或该区域开始显著辐合的近似时间。这些剖面将允许计算背斜的辐合速率，以及隐藏逆冲断层的滑动量和滑动速率。它们还可以生成断层表面、基底顶部和第三纪地层顶部的构造图，这反过来又可以建立北岭地区的三维图像。这项研究的结果将极大地有助于了解洛杉矶和圣费尔南多山谷的地下结构，并为地震危险解释提供急需的几何和运动学约束。＊＊＊

Namson 9416191 This study will produce 11 balanced, restorable, cross sections across the Santa Susana Mountains anticlinorium and a series of subsurface structure maps for the same area. The sections will be restored to about 3 Ma, or the approximate time of initiation of significant convergence in the region. The sections will permit calculation of the convergence rates across the anticlinorium, and the amount of slip and slip rates of hidden thrusts. They will also permit the generation of structure maps on fault surfaces, top of basement and tops of Tertiary formations, which in turn will permit the building of a three-dimensional picture of the Northridge region. The results of this study will greatly assist understanding of the subsurface structures of the Los Angeles and San Fernando Valleys, and provide much-needed geometrical and kinematic constraints for seismic hazard interpretations. ***