دورية أكاديمية
New constraints on the Messinian sealevel drawdown from 3D seismic data of the Ebro Margin, western Mediterranean
| العنوان: | New constraints on the Messinian sealevel drawdown from 3D seismic data of the Ebro Margin, western Mediterranean |
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| المؤلفون: | Urgeles, Roger, Camerlenghi, Angelo, García-Castellanos, Daniel, De Mol, Ben, Garcés, Miguel, Vergés, Jaume, Haslam, Ian, Hardman, Martin |
| بيانات النشر: | Blackwell Publishing |
| سنة النشر: | 2011 |
| المجموعة: | Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| الوصف: | 24 pages, 16 figures, 2 tables ; We present new 3D seismic and well data from the Ebro Margin, NW Mediterranean Sea, to shed new light on the processes that formed the Messinian Erosion Surfaces (MES) of the Valencia Trough (Mediterranean Sea). We combine these data with backstripping techniques to provide a minimum estimate of the Messinian sea level fall in the EBRO Margin, as well as coupled isostasy and river incision and transport modeling to offer new constraints on the evolution of the adjacent subaerial Ebro Basin. Four major seismic units are identified on the Cenozoic Ebro Margin, based on the seismic data, including two major prograding megasequences that are separated by a major unconfirmity: the MES. The 3D seismic data provide an unprecedented view of the MES and display characteristic features of subaerial incision, including a drainage network with tributaries of at least five different orders, terraces and meandering rivers. The Messinian landscape presents a characteristic stepped-like profile that allows the margin to be subdivided in three different regions roughly parallel to the coastline. No major tectonic control exists on the boundaries between these regions. The boundary between the two most distal regions marks the location of a relatively stable base level, and this is used in backstripping analysis to estimate the magnitude of sea level drop associated with the Messinian Salinity Crisis on the Ebro Margin. The MES on the Ebro Margin is dominated by a major fluvial system, that we identify here as the Messinian Ebro River. The 3D seismic data, onshore geology and modeling results indicate that the Ebro River drained the Ebro Basin well in advance of the Messinian ; This work has been funded by ‘Ministerio de Innovacio¤ n y Ciencia’ (MICINN) mainly though project EDINSED3D (CTM2007-64880/MAR) and partially by project Team Consolider-Ingenio 2010 nr. CSD2006- 00041 and CGL2006-05493 grant ; Peer reviewed |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0950-091X 1365-2117 |
| العلاقة: | https://doi.org/10.1111/j.1365-2117.2010.00477.xTest; Basin Research 23(2): 123-145 (2011); http://hdl.handle.net/10261/44978Test |
| DOI: | 10.1111/j.1365-2117.2010.00477.x |
| الإتاحة: | https://doi.org/10.1111/j.1365-2117.2010.00477.xTest http://hdl.handle.net/10261/44978Test |
| حقوق: | none |
| رقم الانضمام: | edsbas.958B419C |
| قاعدة البيانات: | BASE |
| تدمد: | 0950091X 13652117 |
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| DOI: | 10.1111/j.1365-2117.2010.00477.x |