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ISBN: 9787227067863
File size: 9207 KB

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by 王林主编

ebook

该书是一部画册。该书以图片的形式介绍张掖七彩丹霞地貌。张掖丹霞地貌在方圆五十平方公里山地丘陵地带，有造型奇特，色彩斑斓，气势磅礴的丹霞地貌。丹霞是指红色砂砾岩经长期风化剥离和流水侵蚀，形成的孤立的山峰和陡峭的奇岩怪石。这里的丹霞地貌发育于距今约200万年的前侏罗纪至第三纪。