Salt deposition and brine evolution in the Granada Basin (Late Tortonian, SE Spain)

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dc.contributor.authorGarcía-Veigas, Jen_AU
dc.contributor.authorCendón, DIen_AU
dc.contributor.authorRosell, Len_AU
dc.contributor.authorOrti, Fen_AU
dc.contributor.authorTorres Ruiz, Jen_AU
dc.contributor.authorMartín, JMen_AU
dc.contributor.authorSanz, Een_AU
dc.date.accessioned2013-10-28T01:37:39Zen_AU
dc.date.available2013-10-28T01:37:39Zen_AU
dc.date.issued2013-01-01en_AU
dc.date.statistics2013-10-28en_AU
dc.description.abstractA group of sedimentary basins in the Betic Chain were formed during the Middle-Late Miocene as a result of the closure of the Tethys during the Alpine orogeny. In the Late Miocene (Tortonian-Messinian) the connections between the Atlantic Ocean and Mediterranean Sea were interrupted and those basins hosted major evaporites. The Granada Basin, an 'inner basin' located far from the Mediterranean, contains a thick rock salt deposited during the latest Tortonian in the transition from marine to non-marine conditions. In the centre of the basin, three halite-bearing units overlie a basal anhydrite bed: the Lower Halite Unit, the Intermediate Sandstone Unit and the Upper Halite Unit. Fluid inclusion compositions and bromine concentrations in halite, together with stable isotopes (delta S-34(sulfate), delta O-18(sulfate) and Sr-87/Sr-86) indicate a mixture of different inflow waters in the Granada Basin, beginning with a marine lagoon that evolved into a salt-pan strongly isolated from the sea. Saline waters evolved from sulfate-rich marine-derived to sulfate-depleted non-marine brines influenced by the addition of CaCl2-rich inputs. These CaCl2-rich waters were probably linked to thermal fluids associated with a major crustal fracture system (Crevillente or Cadiz-Alicante fault system) that cuts through the Granada Basin. © 2013, Elsevier Ltd.en_AU
dc.identifier.citationGarcía-Veigas, J., Cendón, D.I., Rosell, L., Orti, F., Torres Ruiz, J., Martín, J.M., & Sanz, E. (2013). Salt deposition and brine evolution in the Granada Basin (Late Tortonian, SE Spain). Palaeogeography, Palaeoclimatology, Palaeoecology, 369, 452-465. doi:10.1016/j.palaeo.2012.11.010en_AU
dc.identifier.govdoc5001en_AU
dc.identifier.issn0031-0182en_AU
dc.identifier.journaltitlePalaeogeographyen_AU
dc.identifier.pagination452-465en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4858en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.palaeo.2012.11.010en_AU
dc.identifier.volume369en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science BVen_AU
dc.subjectEvaporitesen_AU
dc.subjectSalinityen_AU
dc.subjectHaliteen_AU
dc.subjectBromineen_AU
dc.subjectSedimentary basinsen_AU
dc.subjectSulfatesen_AU
dc.subjectSpainen_AU
dc.titleSalt deposition and brine evolution in the Granada Basin (Late Tortonian, SE Spain)en_AU
dc.typeJournal Articleen_AU
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