地理中国《揭秘“红石”》
所属栏目：地理中国
所属频道：CCTV-10科教
年份：2012
展开全部
简介：本节目主要内容：内蒙古西北部的阿拉善盟被称为是沙尘暴的发源地，这里地貌多以戈壁、沙漠为主，而在阿拉善东北部的敖伦布拉格镇却分布着十几条红色峡谷群。这里是温带荒漠干旱区，很多人都认为血色峡谷是丹霞地貌或是雅丹地貌，这里甚至被认为是中国的秘境之一。为了揭秘血色峡谷的成因，2012年5月，《地理中国》节目组在郭克毅老师来到敖伦布拉格镇，经过考察，专家组认定这里的岩层富含铁元素，所以呈现红色。这里的岩层是湖泊沉积岩，曾处在泄洪的河道上，被季节性洪流冲刷和风的侵蚀形成了峡谷地貌。收起
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