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13 cards from this deck
Water enters cracks, freezes & expands 9%, breaks rock to scree
9%
Loose rock fragments at slope base from freeze-thaw weathering
Embedded rocks in glacier scrape bedrock like sandpaper
Grooves in bedrock showing direction of ice flow
Blocks freeze to glacier base & are pulled away as ice moves
Meltwater lubricates base, allowing glacier to slide downhill
Ice crystals slide over each other, causing ice to deform
Well-sorted sediments carried & deposited by meltwater streams
Unsorted mix deposited directly by ice without water transport
Approximately 12,000 years ago
Summer melting of snow and ice
Ablation exceeds accumulation
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