
handle: 10045/65012
La isla de Tabarca (Alicante, SE España) se caracteriza por su planicie y su litoral conformado por pequeños acantilados. Es un promontorio emergido del alto de Santa Pola formado por rocas del Complejo Alpujárride y sedimentos del Mioceno Superior. La superficie actual de la isla se interpreta como un terraza marina formada durante el evento isotópico marino 5e al presentar restos de fauna marina que indican una edad tirreniense. En la actualidad se está formando una superficie erosiva que, comenzando en la costa actual, llega hasta la profundidad de 7 m. Entre 7 y 19 m de profundidad se desarrolla un escarpe erosivo interpretado como formada durante y tras el evento frío de 8,2 ka. Al pie de dicho escarpe, entre 15 y 25 m de profundidad, se desarrolla una terraza submarina asociada. Por último, entre 60 y 70 m de profundidad se sitúa otro escarpe erosivo, con una terraza submarina a su pie, a 70 m de profundidad que se interpreta como formada durante el periodo frío del Younger Dryas. Estos dos últimos, se encuentran mayoritariamente recubiertos por sedimentos más recientes pero, en algunas zonas del alto de Santa Pola, sigue aflorando el escarpe submarino.
The Tabarca Island (Alicante, SE España) is characterized by its planar surface and its coastline of small cliffs. It is a high promontory emerged of the Santa Pola High formed by of Alpujarride Complex rocks and Upper Miocene sediments. The plain of the island is interpreted as a marine terrace formed during the 5e marine isotope stage (MIS) as remains of marine fauna indicate a tyrrhenian age. Today an erosional surface is developing, starting at the current coastline and reaching 7 m deep. Between 7 and 19 m deep, an erosional escarpment interpreted as originated during and after the 8.2 ka cold event. At the foot of the escarpment, between 15 and 25 m deep, the associated marine terrace develops. Finally, between 60 and 70 m deep other erosional escarpment is located, with a marine terrace to his foot, 70 m deep, which is interpreted as formed during the Younger Dryas cold period. Recent sediments mostly cover these last ones but, in some areas of the Santa Pola High, the escarpment still outcrops.
Este trabajo se ha realizado en el marco del proyecto GRE13-23 (Investigaciones Emergentes del Programa Propio de la Universidad de Alicante).
Alicante, Younger Dryas, Marine terraces, Evento 8,2 ka, Física de la Tierra, Estratigrafía, Tabarca, Paleontología, Terrazas marinas, 8.2 ka event, Geodinámica Interna
Alicante, Younger Dryas, Marine terraces, Evento 8,2 ka, Física de la Tierra, Estratigrafía, Tabarca, Paleontología, Terrazas marinas, 8.2 ka event, Geodinámica Interna
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