一种新型冰川地貌&山岳冰川型蛇形丘
A New Kind of Glacial Landform : Mountain Glacier Esker
对瑞典乌布撒拉蛇形丘的初步研究
A Research on Uppsala Esker , Sweden
蛇形丘显然是冰下河溪的沉积物堆积而成的很长的垄岗。
Eskers are very long ridges apparently formed when sub-glacial streams or rivers deposited sedimentary materials .