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Treatise on Geomorphology
Glossary Debris avalanche A mass of rock fragments and soil that moves rapidly down a steep mountain slope. Lahar A landslide of volcanic debris mixed with water, down the sides of a volcano. Solifluction The slow, downhill movement of soil in areas typically underlain by frozen ground. Tephra The fragmented solid material produced and ejected in the air by a volcanic eruption. Abstract This chapter discusses and illustrates how changes in slope angle can cause mass movement. Several processesdoi:10.1016/b978-0-12-374739-6.00167-6 fatcat:s6zhapsq3bghfdbf74fok4i7t4