Electron spin resonance dating of toxodon tooth from upper Ribeira Valley, S??o Paulo, Brazil

dc.creatorKINOSHITA, ANGELA
dc.creatorGHILARDI, ALINE M.
dc.creatorFERNANDES, MARCELO A.
dc.creatorFIGUEIREDO, ANA M.G.
dc.creatorBAFFA, OSWALDO
dc.date2016
dc.date2017-04-07T17:58:14Z
dc.date2017-04-07T17:58:14Z
dc.date.accessioned2023-09-28T13:33:28Z
dc.date.available2023-09-28T13:33:28Z
dc.identifier0144-8420
dc.identifierhttp://repositorio.ipen.br/handle/123456789/27367
dc.identifier172
dc.identifier10.1093/rpd/ncw195
dc.identifier21.421
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8997641
dc.descriptionElectron spin resonance (ESR) dating was applied to date a sample of fossil tooth found in Ribeira Valley, S??o Paulo, Brazil. This region is characterized by abundant fossil records of Pleistocene???Holocene South American megafauna belonging to different faunistic moments related to climate changes during the quaternary. As the number of fossils dated is not too large, the dating of materials from this region will provide important information to better understand the events associated with the presence and extinction of these species. The equivalent dose (De) was determined using single exponential fitting resulting in (24 ?? 1)Gy. The De was converted to age using ROSY ESR Dating program and the concentration of radioisotopes present in the sample and soil determined through neutron activation analysis. The ages cover the range of 25???34 ka. This information is important to contextualize other findings in the region from different sites and to help obtain better information about the climate changes in this region.
dc.format296-301
dc.relationRadiation Protection Dosimetry
dc.rightsclosedAccess
dc.subjectage estimation
dc.subjectclimatic change
dc.subjectconcentration ratio
dc.subjectdose equivalents
dc.subjectecological concentration
dc.subjectelectron spin resonance
dc.subjectfossils
dc.subjectneutron activation analysis
dc.subjectradioisotopes
dc.subjectspin
dc.subjectteeth
dc.subjectvalleys
dc.subjectbrazil
dc.titleElectron spin resonance dating of toxodon tooth from upper Ribeira Valley, S??o Paulo, Brazil
dc.typeArtigo de peri??dico
dc.coverageI


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