Structural Control of Ground-Water Induced Debris Flows

by Souren Ala, Texas A&M Univ, United States,
Christopher C. Mathewson, Texas A&M Univ, United States,

Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H²AL)

Abstract: A number of case studies have attributed debris flow initiation to the effect of elevated pore pressure from a bedrock ground-water source. Debris flows on slopes underlain by Precambrian metamorphic rocks of the Wasatch Front, Utah, fall into this category. Bedrock structural trends suggest that northwest-trending faults are avenues for ground-water flow. This may explain the higher number of debris flows on slopes intersecting fault traces.

Subject Headings: Groundwater flow | Structural control | Debris | Solids flow | Flow control | Hydraulic structures | Bedrock | Geological faults | Pressurized flow | Water pressure | Case studies | Utah | North America | United States

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