Search results for " Volcanic ash layers"

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Astronomical dating of two Pliocene alkaline volcanic ash layers in the Capo Rossello area (southern Sicily, Italy): implications for the beginning o…

2009

Key-words. - Sicily Channel rift, Biostratigraphy, Astronomical calibration, Pliocene, Volcanic ash layers. Abstract. - Two volcaniclastic ash layers (AL1 and AL2) are intercalated throughout the middle Pliocene sedimentary sequences of Punta Piccola and Capo Rossello exposed along the south coast of Sicily (Italy). Astronomical calibration of the Punta Piccola section provided an age of 2.676 Ma for the deposition of the AL1 layer. The high-resolution bio-cyclostratigraphy of the Capo Rossello section, in combination with detailed correlations with previously astrono- mically calibrated coeval sequences, provided an age of 2.225 Ma for the deposition of the AL2 layer. Mineralogical, petrog…

geographygeography.geographical_feature_categoryRiftPlioceneSettore GEO/02 - Geologia Stratigrafica E SedimentologicaPleistoceneGeochemistryBiostratigraphyPyroclastic rockGeologySicily Channel riftSettore GEO/01 - Paleontologia E PaleoecologiaBiostratigraphyAstronomical calibrationSettore GEO/08 - Geochimica E VulcanologiaVolcanoSicily Channel rift Biostratigraphy Astronomical calibration Pliocene Volcanic ash layersMagmatismVolcanic ash layersSedimentary rockSeismologyGeologyVolcanic ashBulletin de la Société Géologique de France

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