Abstract
Nearly horizontal beds of stiff cohesive clays alternating with cohesionless silts crop out along a steep wall of the channel in La Jolla Fan Valley in water depths of about 3000 feet. These exposures are believed to be the result of lateral channel erosion by turbidity currents: this should result in periodic development of new channel routes. Once current erosion forms these steep walls of outcropping sediment layers, the sliding of clay blocks, local slumping, and actions of benthic organisms modify them. Recently active turbidity currents are believed to be of a much smaller scale than those responsible for the development of the large morphological features of the over-all fan valley.
Published Version
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