Reparto de la deformación en el límite Zonas Internas-Externas de la transversal de Ronda (Béticas occidentales)

  1. J.C. Balanyá 1
  2. I. Expósito 1
  3. A. Jiménez-Bonilla 1
  4. M. Díaz-Azpiroz 1
  5. M. Sánchez-Gómez 2
  6. A. Crespo-Blanc 3
  1. 1 Universidad Pablo de Olavide
    info

    Universidad Pablo de Olavide

    Sevilla, España

    ROR https://ror.org/02z749649

  2. 2 Universidad de Jaén
    info

    Universidad de Jaén

    Jaén, España

    ROR https://ror.org/0122p5f64

  3. 3 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

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Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2021

Issue Title: X Congreso Geológico de España

Issue: 18

Pages: 34-37

Type: Article

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More publications in: Geotemas (Madrid)

Abstract

This work aims to analyse the variations of tectonic transport directions associated to shortening structures near the Internal-External Zone boundary of the Ronda transect (western Betics). It focus on Lower to Middle Miocene structu- res belonging to the main deformation event in the fold-and-thrust belt. The Penibetic (External Zones) is deformed by NW vergent folds and shows slickenlines indicating transport sense towards N305º-320ºE. Similar results have been obtained in the Nieves Unit (Internal Zones). In the Alpujarride Complex (Internal Zones), W vergent crenulation folds and upright N-S- folds, indicate a N270º-280ºE tectonic transport direction. The difference (<30º) in tectonic transport directions between the Alpujarride and the Nieves-Penibetic ensemble seems to indicate a general dextral transpression. In this context, the Nieves-Penibetic ensemble could accommodate mainly the orthogonal shortening component whereas the Alpujarride units could accommodate most of the lateral displacement.

Data source: Dialnet