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http://hdl.handle.net/2445/164275
Title: | Early-Middle Miocene subtle compressional deformation in the Ebro foreland basin (northern Spain); insights from magnetic fabrics |
Author: | Soto, Ruth Larrasoaña, Juan C. Beamud Amorós, Elisabet Garcés Crespo, Miguel |
Keywords: | Magnetisme Miocè Ebre, Conca de l' Deformació de les roques Magnetism Miocene Ebro River Watershead Rock deformation |
Issue Date: | 2016 |
Publisher: | Elsevier Masson SAS |
Abstract: | The results of anisotropy of magnetic susceptibility analyses of 19 sites carried out on magnetostrigraphically-dated, Lower to Middle Miocene (20.4 to 13.7 Ma) 'non-deformed' mudstones from the central part of the Ebro basin reveal the presence of a subtle tectonic overprint lasting at least until the Langhian (Middle Miocene) in the southern Pyrenean foreland. Magnetic ellipsoids show a sedimentary fabric in 42% of sites and a weak and well-defined magnetic lineation in 47% and 11% of sites. The magnetic lineation is roughly oriented around the east-west direction, compatible with a very weak deformation occurring there and related to the north-south compression linked to the convergence between Europe, Iberia and Africa during the Early-Middle Miocene. A slight variation of the magnetic parameters Km, Pj, and T exists through time, probably due to changes in the sedimentary conditions in the basin. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.crte.2015.10.009 |
It is part of: | Comptes Rendus Geoscience, 2016, vol. 348, num. 3-4, p. 213-223 |
URI: | http://hdl.handle.net/2445/164275 |
Related resource: | https://doi.org/10.1016/j.crte.2015.10.009 |
ISSN: | 1631-0713 |
Appears in Collections: | Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) |
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