Sub-decadal turbidite frequency during the early Holocene: Eel Fan, offshore northern California
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Abstract
Remotely operated and autonomous underwater vehicle technologies were used to image and sample exceptional deep sea outcrops where an ∼100-m-thick section of turbidite beds is exposed on the headwalls of two giant submarine scours on Eel submarine fan, offshore northern California (USA). These outcrops provide a rare opportunity to connect young deep-sea turbidites with their feeder system. 14C measurements reveal that from 12.8 ka to 7.9 ka, one turbidite was being emplaced on average every 7 yr. This emplacement rate is two to three orders of magnitude higher than observed for turbidites elsewhere along the Pacific margin of North America. The turbidites contain abundant wood and shallow-dwelling foraminifera, demonstrating an efficient connection between the Eel River source and the Eel Fan sink. Turbidite recurrence intervals diminish fivefold to ∼36 yr from 7.9 ka onward, reflecting sea-level rise and re-routing of Eel River sediments.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sub-decadal turbidite frequency during the early Holocene: Eel Fan, offshore northern California |
| Series title | Geology Today |
| DOI | 10.1130/G35768.1 |
| Volume | 42 |
| Issue | 10 |
| Year Published | 2014 |
| Language | English |
| Publisher | Geological Society of America |
| Publisher location | Boulder, CO |
| Contributing office(s) | Pacific Coastal and Marine Science Center |
| Description | 4 p. |
| First page | 855 |
| Last page | 858 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |