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27 September 2013 Les accumulations de Gigantopecten restitutensis (Fontannes, 1884) (Mollusca: Bivalvia: Pectinidae) dans le Burdigalien supérieur des carrières de Ménerbes et de Lacoste (Vaucluse, bassin d'Apt, SE France) : analyse et hypothèse explicative
Madeleine Bongrain
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Abstract

Accumulations of “Gigantopecten restitutensis (Fontannes, 1884) (Mollusca: Bivalvia: Pectinidae) in the Upper Burdigalian age in the Menerbes and Lacoste quarries (Vaucluse, Apt Basin, SE France): analysis and explicative hypothesis.

The present study relates to the calcareous beds with accumulations of the large pectinid Gigantopecten restitutensis (Fontannes, 1884) in the Lower Miocene of the Apt Basin (Vaucluse). Analysis of the observed thanatocœnoses shows that G. restitutensis predominates in the bioclastic limestones of the Baquis quarries. On the contrary, the sea urchin Tripneustes planus (Agassiz, 1840) predominates in the Soubeyran quarry. These observations led to the hypothesis that these clusters of well-preserved fossils could result of obrution phenomena originated by earthquakes and increasing instability of sedimentary slopes generated by the uplift of the Luberon Mountain during the Upper Burdigalian.

© Publications Scientifiques du Muséum national d'Histoire naturelle, Paris.
Madeleine Bongrain "Les accumulations de Gigantopecten restitutensis (Fontannes, 1884) (Mollusca: Bivalvia: Pectinidae) dans le Burdigalien supérieur des carrières de Ménerbes et de Lacoste (Vaucluse, bassin d'Apt, SE France) : analyse et hypothèse explicative," Geodiversitas 35(3), 607-628, (27 September 2013). https://doi.org/10.5252/g2013n3a5
Received: 8 September 2011; Accepted: 1 September 2012; Published: 27 September 2013
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KEYWORDS
Apt Basin
bassin d'Apt
Burdigalien supérieur
earthquakes
Lower Miocene
Luberon
Miocène inférieur
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