Late Quaternary evolution of channel and lobe complexes of Monterey Fan
Marine Geology
By: Andrea Fildani and William R. Normark
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Abstract
The modern Monterey submarine fan, one of the largest deep-water deposits off the western US, is composed of two major turbidite systems: the Neogene Lower Turbidite System (LTS) and the late Quarternary Upper Turbidite System (UTS). The areally extensive LTS is a distal deposit with low-relief, poorly defined channels, overbank, and lower-fan elements. The younger UTS comprises almost half of the total fan volume and was initiated in the late Pleistocene from canyons in the Monterey Bay area. Rapidly prograding high-relief, channel-levee complexes dominated deposition early in the UTS with periodic avulsion events. In the last few 100 ka, much of the sediment bypassed the northern fan as a result of allocyclic controls, and deposition is simultaneously occuring on a sandy lobe with low-relief channels and on an adjacent detached muddier lobe built from reconfinement of overbank flow from the northern high-relief channels. During the relatively short-lived UTS deposition, at least seven different channel types and two lobe types were formed. This study provides a significant reinterpretation of the depositional history of Monterey Fan by incorporating all available unpublished geophysical data.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Late Quaternary evolution of channel and lobe complexes of Monterey Fan |
| Series title | Marine Geology |
| DOI | 10.1016/j.margeo.2004.03.001 |
| Volume | 206 |
| Issue | 1-4 |
| Year Published | 2004 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Coastal and Marine Geology Program |
| Description | 25 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Marine Geology |
| First page | 199 |
| Last page | 223 |
| Country | United States |
| State | California |
| Other Geospatial | Monterey Fan |
| Google Analytic Metrics | Metrics page |