学科：构造地质学 词目：直立褶皱 英文：upright fold 释文：直立褶皱是指轴面陡倾至铅直（倾角80°～90°）的褶皱。
晚期为直立褶皱，褶皱轴主要为北东—北北西向。
The late stage of superposed folding structures are upright folds with the northeastern and north-northwestern fold axial trend.
对剖面中反映的构造反转、褶皱组合样式、逆冲断裂带、直立地层发育带的构造特征进行了探讨。
Structural characteristics of inversion structure, fold association style, thrust fault zone upright strata developed belt shown in great profiles were also discussed.
在东秦岭前寒武系变质岩中，发育了许多Z字型叠加褶皱。它们是由近直立的片麻岩和长英质脉形成的。
Z-shaped superposed folds formed by nearly vertical gneiss and feldspar-quartz veins are widely developed in East Qinling Precambrian metamorphic rocks.
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