Desacoplamiento de la deformación en la base de la lámina cabalgante del Dominio de Alborán (Béticas Occidentales)

  1. Juan Carlos Balanyá 1
  2. Inmaculada Expósito Ramos 1
  3. Alejandro Jiménez-Bonilla 1
  4. Manuel Díaz-Azpiroz 1
  5. Mario Sánchez-Gómez 2
  6. Ana Crespo-Blanc 3
  1. 1 Universidad Pablo de Olavide
    info
    Universidad Pablo de Olavide

    Sevilla, España

    ROR https://ror.org/02z749649

    Geographic location of the organization Universidad Pablo de Olavide
  2. 2 Universidad de Jaén
    info
    Universidad de Jaén

    Jaén, España

    ROR https://ror.org/0122p5f64

    Geographic location of the organization Universidad de Jaén
  3. 3 Instituto Andaluz de Ciencias de la Tierra
    info
    Instituto Andaluz de Ciencias de la Tierra

    Granada, España

    ROR https://ror.org/00v0g9w49

    Geographic location of the organization Instituto Andaluz de Ciencias de la Tierra
Show affiliations +
Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2022

Issue: 72

Pages: 23-26

Type: Article

DOI: 10.55407/GEOGACETA98397 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Geogaceta

Sustainable development goals

info

SDG classification obtained using Aurora SDG artificial intelligence model.

Abstract

In the Western Betics, the Alboran Domain crystalline thrust sheet (ATS) overlies the Frontal Units (FU) and the inner part of the fold-and-thrust belt (FTB). We analysed the tectonic style and transport directions of the ATS and compared them with those of the overthrusted units. Our results indicate that the internal deformation within the ATS, coeval to the sheet emplacement, is moderate and mainly consists of accommodation folds striking N-S to N20ºE, these folds being developed above the frontal hangingwall ramp.Large-scale upright folds deforming the rear part of the thrust sheet are probably the same age (early-middle Miocene). Moreover, the tectonic transport directions of the ATS (N270º-280ºE) are parallel to those of the FTB units in the western front. By contrast, the FU and the FTB show transport directions oriented N310º-320ºE in the northern front. These variations and the abrupt changes in tectonic style between the ATS and the FU/FTB units indicate a high grade of decoupling between the two ensembles.

Data source: Dialnet