地理中國《揭秘“紅石”》
所屬欄目：地理中國
所屬頻道：CCTV-10科教
年份：2012
展開全部
簡介：本節目主要內容：內蒙古西北部的阿拉善盟被稱為是沙塵暴的發源地，這裡地貌多以戈壁、沙漠為主，而在阿拉善東北部的敖倫布拉格鎮卻分佈著十幾條紅色峽谷群。這裡是溫帶荒漠乾旱區，很多人都認為血色峽谷是丹霞地貌或是雅丹地貌，這裡甚至被認為是中國的秘境之一。為了揭秘血色峽谷的成因，2012年5月，《地理中國》節目組在郭克毅老師來到敖倫布拉格鎮，經過考察，專家組認定這裡的岩層富含鐵元素，所以呈現紅色。這裡的岩層是湖泊沉積岩，曾處在泄洪的河道上，被季節性洪流沖刷和風的侵蝕形成了峽谷地貌。收起
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