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东非大裂谷是地垒吗

更新时间: 2020-10-31 00:00:00     

东非大裂谷不是地垒,属于地堑,东非大裂谷(EastAfricanGreatRiftValley)是世界大陆上最大的断裂带,从卫星照片上看去犹如一道巨大的伤疤。

地堑(Graben)是地壳上广泛发育的一种地质构造,为两侧被高角度断层围限﹐中间下降的槽形断块构造。仅在一侧为断层所限的断陷﹐称为半地堑或箕状构造。大规模地堑发育的地方,预示着地壳拉伸变薄。

关键词: 东非 裂谷

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