RT Journal Article
T1 Valores de subsidencia reciente (Pioceno-Cuaternario) en el Mar de Alborán mediante análisis de “backstripping”
T1 Pliocene to Quaternary subsidence rates in the Alboran Sea from backstripping analysis
A1 Martínez García, Pedro
A1 Soto, Juan I.
AB A backstripping analysis is presented for the different scientific ODP wells in the Alboran Sea (Leg 161,Holes 976B, 977A, 978A, and 979A). The study has been performed for the complete Pliocene-to-Quaternary sedimentary sequence, based on the detailed paleontological dataset available in these wells.Logging data together with in-situ determinations of porosity and density have been fitted to obtain robustestimates of the appropriate variables to perform the backstripping study (e.g., porosity, density). The totalsubsidence pattern shows a remarkable coincidence in all the wells (Y=310-355 m) equivalent to asubsidence rate of 0.06-0.07 mm/y for the last 5.1 Ma. In regions where a significant intra-Pliocene hiatus(2.2-5.0 Ma) occurred, like the Site 976-basement high in the West Alboran Basin or the Alboran Ridge,we infer the existence of a major tectonic pulse with high subsidence rates (2.2-5.0 mm/y) that diminishedtowards the Quaternary (0.07-0.11 mm/y). According to these results, the estimated stretching factor (b)for this basin is 1.35-1.42
PB Sociedad Geológica de España
YR 2006
FD 2006
LK http://hdl.handle.net/10272/8641
UL http://hdl.handle.net/10272/8641
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026