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1 the role of Stubbs corrosion When cirque ice bed at the bottom or the back of the bedrock along the joints and loosening of repeated freezing and thawing, if these loose rocks and ice to freeze together, glacier Zuchtperlen movement when they rock out away, this is known as the Stubbs erosion. After pulling the post-glacial erosion of its river valley is a rugged slope of the curve, forming a trapezoidal profile of the gradient curve.
2 abrasion effect When the movement of glaciers, Akoyaperlen frozen in glaciers or ice at the bottom of rock fragments, due to the pressure of ice above the glacier bed grinding and etching to cut, as the role of abrasion. The role of abrasion in the formation of bedrockwith the polished surface, andor glaciation groove is a good evidence, and its direction can be used to indicate the direction of moving glaciers.
3 the role of ice-wedge the cracks in the rocks contained in the ice melt water, the role of repeated freezing and thawing, the volume up when the time reduction, resulting in broken rock and become fragments, or from both sides of the slope to the glacier fall forward.
4 Other When the ice-melting water into the river, a large folder of its regular ice volume will Perlen Ohrringe have a strong impact force to undermine cross-strait rock downstream.