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dc.contributor.authorCambeses Torres, Aitor 
dc.contributor.authorScarrow, Jane Hannah 
dc.date.accessioned2014-06-03T08:54:51Z
dc.date.available2014-06-03T08:54:51Z
dc.date.issued2013
dc.identifier.citationCambeses, A.; Scarrow, J.H. Ultrapotassic volcanic centres as potential paleogeographic indicators:The Mediterranean Tortonian 'salinity crisis', southern Spain. Geologica Acta, 11(3): 295-310 (2013). [http://hdl.handle.net/10481/32091]es_ES
dc.identifier.issn1695-6133
dc.identifier.issn1696-5728
dc.identifier.urihttp://hdl.handle.net/10481/32091
dc.description.abstractDated peperites associated with ultrapotassic volcanic centres of the Neogene Volcanic Province of southeast Spain are of particular interest within the complex tectonomagmatic context of the Western Mediterranean because they show clear volcano-sedimentary interactions making them a valuable tool for correlating between Miocene sedimentary basins in the region. Detailed field mapping of two coeval, but geographically separate, ultrapotassic volcanic centres (Zeneta and La Aljorra), and comparison of sedimentary facies and radiometric ages with another at Fortuna, suggest that these centres apparently formed at approximately the same time, late Tortonian, by the same tectonomagmatic process, strike-slip, and in the same, shallow marine, paleogeographical context. Stratigraphic indicators in the Miocene basins suggest that basin-closure initiated in the region during the late Tortonian, prior to the main Mediterranean Messinian salinity crisis. Notably, many of the ultrapotassic volcanic centres are situated close to, and elongated along, the basin margins faults. We suggest, therefore, that movement of basin margin faults that closed the Miocene sedimentary basins causing drying out also facilitated the contemporaneous ascent of ultrapotassic magma. So, volcano-sedimentary interactions may be used to make inferences about both the tectonomagmatic and paleogeographic evolution of a region. In southeast Spain peperites provide evidence that the Tortonian 'salinity crisis' was geographically more widespread, extending to the southeast, than previously recognized.es_ES
dc.description.sponsorshipThis study has been financially supported by the Andalusian grant RNM1595, the Spanish grant CGL2008-02864, and a Masters grant awarded to AC by the Departamento de Mineralogía. y Petrología, Universidad de Granada, Spain.es_ES
dc.language.isoenges_ES
dc.publisherUniversidad de Barcelona; Instituto de Ciencias de la Tierra Jaume Almeraes_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 License
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subjectTortonianes_ES
dc.subjectPeperiteses_ES
dc.subjectLamproitees_ES
dc.subjectBasin-closurees_ES
dc.subjectSalinity crisises_ES
dc.titleUltrapotassic volcanic centres as potential paleogeographic indicators:The Mediterranean Tortonian 'salinity crisis', southern Spaines_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1344/105.000001860


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