前言在河西走廊一带的煤田地质勘探中,本人发现了不少的小褶皱,尤其在煤系地层中更为发育。很多地方从露头上就可看出,这些小褶皱对煤层或其他矿层起着或轻或重的破坏作用。根据本人在工作中的验证,无论甚么样的小褶皱,都有它一定的生成原因。若是在野外能对这些小褶皱仔细认真地加以分析研究,则对隐蔽的构造、构造线的要素、构造的追索,以及对 Preface In the geological exploration of coalfields in Hexi Corridor, I found a lot of small folds, especially in coal-bearing strata. In many places, it can be seen from the outcrops that these small folds play a destructive or light weight on the coal seam or other layers. According to my work in the verification, no matter what kind of small folds, it has some reason to generate. If these small folds can be carefully analyzed and studied in the wild, then the hidden structure, the elements of the structure line, the structure of the recourse, as well as