broad and gentle fold 宽缓的褶皱
The structure of predicting area is a broad, gentle syncline, together with Hushan syncline made up a comb fold.
预测区内构造为一宽缓向斜，与弧山向斜共同构成隔档式（梳状）褶皱。
In Mesozoic, the Proterozoic Sulu fold belt has undergone orogenic activization resulting in the intrusion of numerous granite bodies with broad development of metasomatic rocks.
在中生代，苏鲁元古褶皱带受造山作用的影响活化，导致许多花岗岩体的侵入，使交代岩广泛发育。
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