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A geologist is looking at deposits along a river below a large volcano. she finds large boulders mixed with sand and mud, and all of the material is comprised of volcanic rocks, particularly the mud which is volcanic ash. she quickly realizes these deposits represent an ancient ________. a geologist is looking at deposits along a river below a large volcano. she finds large boulders mixed with sand and mud, and all of the material is comprised of volcanic rocks, particularly the mud which is volcanic ash. she quickly realizes these deposits represent an ancient ________. lahar earthflow rock avalanche slump

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scme1702
The deposits represent an ancient lahar.
A lahar is a type of mud flow which contains different materials such as pyroclastic material, rocks and water. Lahars usually flow down volcanoes, along river valley. Lahars have a very high potential for destruction due to the high speed of the flowing slurry. A high velocity means that the mixture has a lot of energy and it essentially sweeps away anything in its path.

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