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| Reis, A. T.; Maia, R. M. C.; Silva, C.g.; Rabineau, Marina; Guerra, J.v.; Gorini, C.; Ayres, A.; Arantes-oliveira, R.; Benabdellouahed, M; Simoes, I.; Tardin, R.. |
| A combined analysis of seismic and morphological features identified in a set of high-resolution seismic reflection and bathymetric data, shows a systematic relationship between major modern seafloor morphological traces and the basinward migration of Late Pleistocene coastlines along the continental shelf of the Santos basin (Rio de Janeiro State, SE Brazil). Observed fairly continuous and sinuous mid-outer shelf escarpments are related to the sea-level variations and shelf exposure during the Last Glacial cycle. A bathymetric step at -110 m is an erosional remnant of offlapping detached forced-regressive wedges that spread over 50 km in the shelf-dip direction, probably developed during periods of falling sea level between MIS 3 and 2. A second major... |
| Tipo: Text |
Palavras-chave: Continental shelf geomorphology; Forced regression; LGM shoreline; Late Pleistocene; Post-LGM transgression; Brazil Current. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00169/28041/27268.pdf |
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| Lericolais, Gilles; Bulois, C.; Gillet, Herve; Guichard, F.. |
| This paper presents a 3D geometric interpretation of very high resolution seismic Chirp profiles acquired on the Romanian shelf during ASSEMBLAGE European Project. The results provide a solid record of the Black Sea Last Glacial Maximum (LGM) water level fluctuations. This pseudo-3D seismic interpretation shows that the Black Sea lacustrine shelf deposits form a significant basinward-prograding wedge system. on top of these prograding sequences is a set of sand dunes that delineates a wave cut-terrace like feature around the isobath -100 m. Landward of this dune field are small depressions containing barkhan-like bodies. The upper part of the last prograding sequence is incised by anastomosed channels which end in the Danube (Viteaz) canyon which are also... |
| Tipo: Text |
Palavras-chave: Black Sea; Enclosed basin; Forced regression; Rapid transgression; Sea level changes. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6587.pdf |
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