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The Ebro Deep-Sea Fan system |
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| Authors: | C Hans Nelson Andres Maldonado Francis Coumes Henri Got Andre Manaco |
| Institution: | 1. U.S. Geological Survey, 94025, Menlo Park, California 2. Instituto “Jaime Almera”, Barcelona, Spain 3. Laboratoire de Geologie ELF Aquitaine, Pau Cedex, France 4. Centre de Recherches de Sedimentologie Marine, Universite de Perpignan, France |
| Abstract: | The Ebro Fan System consists of en echelon channel-levee complexes, 50×20 km in area and 200-m thick. A few strong reflectors in a generally transparent seismic facies identify the sand-rich channel floors and levee crests. Numerous continuous acoustic reflectors characterize overbank turbidites and hemipelagites that blanket abandoned channel-levee complexes. The interlobe areas between channel complexes fill with homogeneous mud and sand from mass flow and overbank deposition; these exhibit a transparent seismic character. The steep continental rise and sediment “drainage” of Valencia Trough at the end of the channel-levee complexes prevent the development of distributary channels and midfan lobe deposits. |
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