Structure and Evolution of an Active Thrust Front: Eastern Precordillera, Argentine Andes

冲断前缘位于冲断带与前陆盆地的交界面。在这些带中发现的独特构造阵列（相对的辐合带和三角带）可能是由于冲断带向前陆的正常传播，也可能是由于冲断带无法再向克拉通移动而发育的。该项目将检查来自阿根廷西部Precordillera的地下和地表数据，那里有一个冲断前缘很好地暴露出来，并且有相当多的地震数据可供再处理。研究结果将有助于解决冲断前缘构造的起源问题，并从总体上理解冲断带的构造机制。

Thrust fronts are located at the interface between thrust belts and foreland basins. The unique array of structures found in these zones (opposing vergencies and triangle zones) may be due to normal propagation of the thrust belt towards the foreland or they may be developed because the thrust belt could move no farther towards the craton. This project will examine subsurface and surface data from the Precordillera of western Argentina where a thrust front is well exposed, and considerable seismic data is available for reprocessing. Results will help resolve the origin of thrust front structures and in understanding the mechanics of thrust belts in general.