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La tectónica alpina de la Falla de Alentejo-Plasencia (Macizo Hespérico)
- Publication Year :
- 1996
- Publisher :
- Sociedad Geológica de España, 1996.
-
Abstract
- Alentejo-Plasencia fault was active during the alpine compressional phases with a sinistral strike-slip movement in two main stages. The fault geometry was straight and no important bendings formed during Paleogene, when the maximum shortening direction was close to N-S or NNE-SSW. During Miocene (Middle Aragonian) and related to the Neocastellana tectonic phase, the Alentejo-Plasencia fault still moved as a sinistraI strike-slip due to a NW-SE compression, but the Extremadura sector of the fault curved and bends formed along the fault at certain points where important lithologic changes were present. Several restraining and releasing bends formed; these latter creating pull-apart basins, some of them filled with continental clastic sediments. Most of the fault displacement (about 3 Km.) seems to be related to the alpine tectonics. The small displacement compared with the fault length is coherent with its location on a co//s/ona/ area foreland
Details
- Language :
- Spanish; Castilian
- Database :
- OpenAIRE
- Accession number :
- edsair.od......1388..5c81d0cb85ba9cd7079329604ebc01f0