羊背石
羊背石是在冰床上由冰蚀作用形成一种地貌形态,它是由基岩组成的小丘,通常成群分布,远远望去犹如匍匐在地面上的羊群,故名。羊背石在平面上呈两端不对称的椭球形,其长轴与冰川运动方向平行:迎冰的一端由于受到的是冰川的磨蚀作用,坡度较缓,表面光滑有擦痕;背向冰川流动的一端受到的是冰川的侵蚀作用,坡度较陡,表面坎坷不平。
参见
参考
- 吴正. (M) 1. 北京: 科学出版社. 2009: 113. ISBN 978-7-03-025401-6.
外部链接
- A roche moutonnée and perched boulders, northeastern Manitoba, image from Geological Survey of Canada Canadian Landscapes Photo Collection
- Roche moutonnée, northern Abitibi, Québec, image from Geological Survey of Canada Canadian Landscapes Photo Collection
- Roche Moutonnée, Melville Peninsula, Nunavut, image from Geological Survey of Canada Canadian Landscapes Photo Collection
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