Glacial Erosion and Deposition Freeze thaw weathering Add labels to the diagram to explain how freeze thaw weathering occurs Abrasion and Plucking Write a short definition of plucking and abrasion which explain how they erode rock and the land. _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ Glacial Movement and Transportation What is basal slip and why does it occur? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ What is rotational slip and why does it occur? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ What is internal deformation and what is its result? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ What is moraine and how is it transported? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ Glacial Deposition Most deposition (dropping of sediment / rocks) occurs when ice melts. As most melting occurs at the snout (end) of the glacier this where most material is deposited. If a glacier then advances this material is pushed forwards and down the mountain like a bulldozer moving debris. This is why this process is called bulldozing. What happens when the glacier retreats? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ____________________________________________________________________