概述包络面(Faltenspiege)乃是复杂褶皱系中重建起来的一种面状构造,它和褶皱轴面同样是一种假定的面状构造.所谓包络面,是指通过复杂褶皱系中各单元褶皱脊线所勾连出来的一个面.在切割脊线方向的剖面上,包络面系通过连接复杂褶皱系中各单元褶皱转折端表达出来的(图1).在地质科学研究院情报所翻译B.B.艾兹所著“变质岩层构造特征”一文中,将包络面称为褶皱镜面. 在复杂褶皱系中,重建起来的包络面不是一个,而是两个,我们可根据地层层序新 Overview Faltenspiege is a reconstructed planar structure of complex folds, which is also a hypothetical planar structure similar to that of folds, so called “envelopes” Unit folds Ridge hooked out of a face in the cut ridge line direction of the profile, the envelope surface by connecting complex folds of each unit folds transitional expression (Figure 1) .In the Institute of Geological Sciences Information Translated by BB Az in the article entitled “Structural Features of Metamorphic Rocks”, the envelope is called the folds mirror. In the complex folds, the reconstructed envelope is not one, but two, according to the stratigraphic sequence new