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Delgada Fan: Preliminary interpretation of channel development

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Abstract

The Delgada Fan, an irregularly shaped turbidite deposit extending more than 350 km offshore from northern California, consists of two large leveed-valley units each fed by a separate complex of coalescing submarine canyons and slope gullies. Although the leveed-valley units head within 25 km of each other, both appear to have developed independently during fan growth. The larger southern leveed-valley system has not developed middle-fan distributary channels and appears to illustrate a period of progressive valley abandonment. Although the lower-fan area is underlain by sandy sediments, little sand has been recovered in piston cores from the leveed-valley unit.

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Authors and Affiliations

  1. U.S. Geological Survey, 345 Middlefield Road, 94025, Menlo Park, CA

    William R. Normark & Christina E. Gutmacher

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  1. William R. Normark
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  2. Christina E. Gutmacher
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Normark, W.R., Gutmacher, C.E. Delgada Fan: Preliminary interpretation of channel development. Geo-Marine Letters 3, 79–83 (1983). https://doi.org/10.1007/BF02462451

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  • DOI: https://doi.org/10.1007/BF02462451

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