Abstract
Remnants of an Eocene fan system are preserved onshore at San Diego and in the central part of the southern California borderland. Even though faults and erosion have truncated its margins, geophysical data and exploratory wells indicate that remaining parts of the fan extend beneath an offshore area nearly 400-km long and 40- to 100-km wide. Environments representing fluvial, fan-delta, shelf-channel, overlapping inner- to outer-fan, and basin-plain facies are recognized or inferred. Three progradational cycles onshore and two distinct pulses of sand accumulation offshore are attributable to eustatic low sea-level stands rather than to tectonic uplift or shifts in depositional patterns.
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Howell, D.G., Vedder, J.G. Ferrelo Fan, California: Depositional system influenced by Eustatic sea level changes. Geo-Marine Letters 3, 187–192 (1983). https://doi.org/10.1007/BF02462466
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DOI: https://doi.org/10.1007/BF02462466