The late Messinian erosional surface and the subsequent reflooding in the Mediterranean: New insights from the Melilla–Nador basin (Morocco)

Autor: Michelle Ferrandini, Ph. Münch, S. Saint Martin, Jean-Jacques Cornée, M. Moullade, S. Roger, J.P. Saint Martin, Jean Ferrandini, Anne Ribaud-Laurenti
Přispěvatelé: PaleoEnvironnements et PaleobioSphere (PEPS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Géologie, Université Pascal Paoli (UPP), Paléobiodiversité et paléoenvironnements, Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Gabrielli, Doriane, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2006
Předmět:
Mediterranean climate
010506 paleontology
Pliocene
Structural basin
Mediterranean
010502 geochemistry & geophysics
Oceanography
01 natural sciences
Reflooding
Sedimentary depositional environment
Paleontology
[SDU.STU.CL] Sciences of the Universe [physics]/Earth Sciences/Climatology
Peninsula
14. Life underwater
[SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology
Ecology
Evolution
Behavior and Systematics
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
Earth-Surface Processes
Late Miocene
geography
geography.geographical_feature_category
Landslide
Morocco
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology
Erosion
Sedimentary rock
Transgressive
[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Geology
Zdroj: Palaeogeography, Palaeoclimatology, Palaeoecology
Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2006, 230, pp.129-154. ⟨10.1016/j.palaeo.2005.07.011⟩
Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2005, 230129-154., pp.129-154
Palaeogeography, Palaeoclimatology, Palaeoecology, 2006, 230, pp.129-154. ⟨10.1016/j.palaeo.2005.07.011⟩
HAL
ISSN: 0031-0182
Popis: International audience; New field investigations in the Cape des Trois Fourches peninsula (northern Morocco) allow us to bring new insights on the late Messinian erosional surface and the overlying marine deposits. Our results show that the late Messinian erosional surface, characterized by an erosional plateau, is interrupted by an up to 70 m deep paleovalley, thought to result from a landslide. The minimum relative sea-level drop is 70 m, probably much more with regard to the indication that a large-scale landsliding has occurred. The post-erosional deposits (Cycle 3) comprise one major depositional sequence composed of two high-order sedimentary subcycles. Deposits of the first subcycle 3A filled in the erosional basin and the paleovalleys; deposits of the second subcycle 3B overflowed the paleovalleys and the erosional plateau. We found evidence of the transgressive systems tract of the deposits corresponding to the post-Messinian crisis reflooding, for which a latest Messinian onset can neither be proved nor entirely ruled out because the rare biostratigraphic data are not sufficiently conclusive. The uppermost part of the reflooding deposits (subcycle 3A) is shown to be definitely Pliocene in age based on the occurrence of Globorotalia puncticulata and the composition of the assemblage of pectinids.
Databáze: OpenAIRE
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