Mesozoic Structural Evolution of the Eastern Mojave Desert Region, Iron and New York Mountains, Southeastern California

9628540个收缩山带的Wells理论和模拟模型表明，伸展可以在山带内部同时发生，也可以在收缩之后立即发生。对于理解造山动力学的主要含义已经概述，但许多重要的方面仍然不清楚。该项目将利用一个可以研究岩浆作用对收缩山带内运动序列的影响的区域。东部莫哈韦沙漠是一个弧后褶皱和冲断带相交的环境，并与同时代的岩浆弧重合。这种具有不同伸展方向的几何学应该可以测试莫哈韦东部是否存在不连续的白垩纪伸展带，并阐明潜在的区域控制，这些区域控制使天平倾斜，有利于导致伸展的重力。这项工作的成功成果将适用于其他造山带。

9628540 Wells Theoretical and analog models of contractional mountain belts have shown that extensions can occur within mountain belt interiors both synchronously with and immediately following contraction. The major implication for understanding the dynamics of mountain building have been outlined, but many important aspects remain unclear. This project will utilize an area where the effects of magmatism on the kinematic sequence within a contractional mountain belt can be studied. The eastern Mojave Desert is a setting where a backarc fold and thrust belt intersects and is coincident with a coeval magmatic arc. This geometry, with differing extension directions should allow a test of whether a discontinuous belt of Cretaceous extension exists across the eastern Mojave, and illuminate the potential regional controls that have tipped the scale in favor of gravitational forces leading to extension. Successful outcome of this work will be applicable to other orogens.