3D reconstruction of syn-tectonic strata in a salt-related orogenlearnings from the Llert syncline (South-central Pyrenees)

  1. Ramos, Adrià
  2. Lopez-Mir, Berta
  3. P. Wilson, Elisabeth
  4. Granado, Pablo
  5. Muñoz, Josep Anton
Zeitschrift:
Geologica acta: an international earth science journal

ISSN: 1695-6133

Datum der Publikation: 2020

Ausgabe: 18

Nummer: 1

Art: Artikel

DOI: 10.1344/GEOLOGICAACTA2020.18.20 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Andere Publikationen in: Geologica acta: an international earth science journal

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Zusammenfassung

The Llert syncline is located in the South-central Pyrenees, between the eastern termination of the EW-trending Cotiella Basin and the north-western limb of the NS-trending Turbón-Serrado fold system. The Cotiella Basin is an inverted upper Coniacian-lower Santonian salt-floored post-rift extensional basin developed along the northern Iberian rift system. The Turbón-Serrado fold system consists of upper Santonian – Maastrichtian contractional salt-cored anticlines developed along an inverted transfer zone of the Pyrenean rift system. Based on field research, this paper presents a 3D reconstruction of the Llert syncline in order to further constrain the transition between these oblique salt-related structures. Our results suggest that the evolution of the Llert syncline was mainly controlled by tectonic shortening related to the tectonic inversion of the Cotiella Basin synchronously to the growth of the Turbón-Serrado detachment anticline, and by the pre-compressional structural framework of the Pyrenean rift system. Our contribution provides new insight into the geometric and kinematic relationships of structures developed during the inversion of passive margins involving salt.

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This is a contribution of the Institut de Recerca Geomodels, Universitat de Barcelona. The authors acknowledge financial support from the Ministerio de Ciencia e Innovación “Proyecto INTECTOSAL, CGL2010- 21968-C02-01” and “Proyecto SALCONBELT CGL2017– 85532-P MINECO/FEDER, UE” and the Generalitat de Catalunya (Grup de Recerca de Geodinàmica i Anàlisi de Conques 2009SGR1198, 2001SRG-126 000074 and 2014SGR467SGR). Research by B. Lopez-Mir was funded by the predoctoral grant Formación del Profesorado Universitario from the Ministerio de Educación, Cultura y Deporte. This research was also carried out with the financial support of REPSOL, STATOIL and OMV Exploration and Production GmbH. Midland Valley (now Petroleum Experts), Paradigm and Bentley Systems are thanked for providing academic licenses of Move™, GoCAD™ and Microstation™ software, respectively. The authors also wish to thank Antonio Teixell, Antonio Casas and Juan Ignacio Soto for their helpful reviews.

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