Ferrelo fan, California: Depositional system influenced by Eustatic sea level changes |
| |
Authors: | D G Howell and J G Vedder |
| |
Institution: | (1) U.S. Geological Survey, 345 Middlefield Road, 94025 Menlo Park, CA |
| |
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.
Margin setting represents fan and/or source area |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|