Main faults of the Betic Cordillera
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Instituto Andaluz de Ciencias de la Tierra
info
ISSN: 0366-0176
Year of publication: 2020
Volume: 131
Issue: 3
Pages: 373-385
Type: Article
More publications in: Boletín geológico y minero
Abstract
In the Betic Cordillera the faults correspond to thrusts forming tectonic units and to three important sets of vertical or quasi-vertical faults. In the Internal Zone the thrusts formed mainly during the Oligocene, under an approximately N-S compression. Later, in the Burdigalian, the Internal Zone collided with the External Zone, which underwent major deformations. Then N60ºE-S60ºW to E-W dextral strike-slip faults formed. These faults formed under nearly E-W compression. From the end of the middle Miocene, the near N-S compression was reestablished and then formed two conjugated sets of faults whose directions are: NNE-SSW (with sinistral character) and NNW-SSE to NW-SE (with dextral character). Not only are the aforementioned major faults, but the rocks also have many other small faults and joints that formed under the same stresses.
Funding information
This work is a contribution of the project DAMAGE (AEI/FEDER CGL2016-80687-R) of DGICYT, and the research group RMN-370 of the Junta de Andaluc?a.Funders
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- RMN-370
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European Regional Development Fund
European Union
- CGL2016-80687-R
- Agencia Estatal de Investigación Spain