The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector

We studied Cenozoic sedimentary rocks in the NE Ebro foreland Basin using the Anisotropy of Magnetic Susceptibility (AMS) as a proxy for grain preferred orientation. Our new data, in combination with existing results, reveal that penetrative strain by layer-parallel shortening extends well beyond th...

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Main Authors: J.M. PARÉS, D. ANASTASIO
Format: Article
Language:English
Published: Universitat de Barcelona (UB), Geociències Barcelona (Geo3BCN), Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDAEA), Universitat Autònoma de Barcelona (UAB) 2018-11-01
Series:Geologica Acta
Subjects:
Online Access:https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2018.16.4.3/27914
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author J.M. PARÉS
D. ANASTASIO
author_facet J.M. PARÉS
D. ANASTASIO
author_sort J.M. PARÉS
collection DOAJ
description We studied Cenozoic sedimentary rocks in the NE Ebro foreland Basin using the Anisotropy of Magnetic Susceptibility (AMS) as a proxy for grain preferred orientation. Our new data, in combination with existing results, reveal that penetrative strain by layer-parallel shortening extends well beyond the Pyrenean thrust-wedge front into the Ebro foreland Basin, challenging the concept of the location of “deformation front” in the Southern Pyrenees. Penetrative strain, as revealed by the magnetic fabrics, seems to reach larger distances into the Ebro foreland Basin where stiffer layers constitute the main detachment level, whereas to the East strain dissipates closer to the deformation front when the detachment is mostly due to salt deposits.
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publisher Universitat de Barcelona (UB), Geociències Barcelona (Geo3BCN), Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDAEA), Universitat Autònoma de Barcelona (UAB)
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spelling doaj.art-18b29378e7954be898be632b9ab626402023-10-19T09:49:03ZengUniversitat de Barcelona (UB), Geociències Barcelona (Geo3BCN), Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDAEA), Universitat Autònoma de Barcelona (UAB)Geologica Acta1696-57282018-11-01164.337539010.1344/GeologicaActa2018.16.4.3The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sectorJ.M. PARÉS0https://orcid.org/0000-0001-8237-6869D. ANASTASIO1Geochronology & Geology Program, CENIEHEarth and Environmental Sciences Department, Lehigh UniversityWe studied Cenozoic sedimentary rocks in the NE Ebro foreland Basin using the Anisotropy of Magnetic Susceptibility (AMS) as a proxy for grain preferred orientation. Our new data, in combination with existing results, reveal that penetrative strain by layer-parallel shortening extends well beyond the Pyrenean thrust-wedge front into the Ebro foreland Basin, challenging the concept of the location of “deformation front” in the Southern Pyrenees. Penetrative strain, as revealed by the magnetic fabrics, seems to reach larger distances into the Ebro foreland Basin where stiffer layers constitute the main detachment level, whereas to the East strain dissipates closer to the deformation front when the detachment is mostly due to salt deposits.https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2018.16.4.3/27914south-pyrenean frontal thrustanisotropy of magnetic susceptibilitycenozoiclayer parallel shortening
spellingShingle J.M. PARÉS
D. ANASTASIO
The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector
Geologica Acta
south-pyrenean frontal thrust
anisotropy of magnetic susceptibility
cenozoic
layer parallel shortening
title The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector
title_full The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector
title_fullStr The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector
title_full_unstemmed The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector
title_short The extent of penetrative Pyrenean deformation in the Ebro foreland Basin: Magnetic fabric data from the eastern sector
title_sort extent of penetrative pyrenean deformation in the ebro foreland basin magnetic fabric data from the eastern sector
topic south-pyrenean frontal thrust
anisotropy of magnetic susceptibility
cenozoic
layer parallel shortening
url https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2018.16.4.3/27914
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