引言对北美落基山的详细研究表明,冲断带可用简单的几何学进行描述,并服从少数几条基本规则(Dahlstrom,1970)。这些原则也成功地用于像苏格兰西北部莫因冲断带这样较复杂地区,并假定冲断作用前地层是近乎水平的。这种由先前的构造幕或不规则的不整合所导致的复杂性早已为人们所认识,但在很大程度上却未曾描述过。在对法国外阿尔卑斯的一个地区制图过程中,纯碎用落基山型几何学方法解释构造就变 A detailed study of the North American Rockies shows that thrust zones can be described by simple geometry and subject to a few basic rules (Dahlstrom, 1970). These principles have also been used successfully in more complicated areas such as the Moineen thrust belt in northwestern Scotland, with the assumption that strata are near horizontal before thrusting. This complexity, caused by previous tectonic or irregular disintegration, has long been known, but to a large extent not described. In the process of mapping a region outside the French Alps, the purely broken rock-based geometry explains the structure