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Soluble rocks (dissolution) Sinkhole; as the water filters down through the rocks above, the salt starts to dissolve and the rocks above drop down to form a sinkhole. Ground dissolution occurs when water passing through soluble rocks produces underground cavities and cave systems. These cavities reduce support to the ground above and can cause localised collapse of the overlying rocks and deposits.
Weathering is the breakdown of rocks into small particles (sediment) due to physical, chemical, or biological interactions. Physical weathering can result. from the repeated freezing and thawing of water entering small cracks or pores. in rocks, or from temperature fluctuations causing expansion and contraction.olish: rockâs high luster created by ice grinding and smoothing rock. Till: Pile of boulders, rocks, clay and gravel left by the movement or melting of a. Weathering: processes that chemically or physically change rock at or near the. 20,000-25,000 years ago.