RT Journal Article
T1 Lithofacies and origin of a deposit of large boulders in the coast of Cadiz (SW Spain). Evidence of an event of high energy during the Pleistocene
T2 A deposit of large boulders, interstratified in Pliocene and Pleistocene sediments has been studied in the coast of Cádiz (SW Spain). The deposit is constituted by conchiferous large boulders, medium and small size clasts and shell fragments. The facies indicate a marine origin of the deposit,and the re-worked character of the sediments and fossils, which were deposited in a high energy marine environment, previously to that they were mobilized and re-deposited by action of a highenergy directional flow.The most appropriate depositional mechanism to explain the formation of this deposit, is the action ofbig waves, generated by a great energy marine event, probably a very strong storm or a tsunami. Thetsunami action is probable since the area is located in a seismically active area, near to the limit of theAfrican and Euro-Asian plates, at the same that several earthquakes and tsunamis are historically documented in the Cadiz coast. The event should happen during the early Pleistocene, coincident with a highstand stage. The isotopic analysis by means of the Method 87Sr/86Sr carried out, hasestablished an age interval from 1.35 to 1.1 million years, corresponding to the Calabriense (Lower Pleistocene).
A1 Gutiérrez-Mas, José Manuel
A1 Mas Mayoral, José Ramón
PB Sociedad Geológica de España
SN 2255-1379
YR 2010
FD 2010
LK https://hdl.handle.net/20.500.14352/44382
UL https://hdl.handle.net/20.500.14352/44382
LA eng
DS Docta Complutense
RD 10 abr 2025