搜索 - 科创

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一处因挖山和工程暴露的背斜，坐标E117.76 N34.40 江苏徐州下辖的一个小乡镇。悬崖上的是某高中。原本的丘陵被挖出断崖。

河谷型（凹面的）的褶皱称为向斜，而山形的（凸面的）褶皱则称为背斜。当褶皱从一侧可见时，如在某些悬崖峭壁处，此时，为我们提供了一个观察变形的绝佳窗口，因为这些变形平时深藏地下、无法看到。

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