Improved zircon fission-track annealing model based on reevaluation of annealing data

dc.creatorGuedes, S
dc.creatorMoreira, PAFP
dc.creatorDevanathan, R
dc.creatorWeber, WJ
dc.creatorHadler, JC
dc.date2013
dc.dateFEB
dc.date2014-07-30T18:01:48Z
dc.date2015-11-26T17:46:33Z
dc.date2014-07-30T18:01:48Z
dc.date2015-11-26T17:46:33Z
dc.date.accessioned2018-03-29T00:29:04Z
dc.date.available2018-03-29T00:29:04Z
dc.identifierPhysics And Chemistry Of Minerals. Springer, v. 40, n. 2, n. 93, n. 106, 2013.
dc.identifier0342-1791
dc.identifierWOS:000314274200001
dc.identifier10.1007/s00269-012-0550-8
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/69254
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/69254
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1288517
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe thermal recovery (annealing) of mineral structure modified by the passage of fission fragments has long been studied by the etching technique. In minerals like apatite and zircon, the annealing kinetics are fairly well constrained from the hour to the million-year timescale and have been described by empirical and semi-empirical equations. On the other hand, laboratory experiments, in which ion beams interact with minerals and synthetic ceramics, have shown that there is a threshold temperature beyond which thermal recovery impedes ion-induced amorphization. In this work, it is assumed that this behavior can be extended to the annealing of fission tracks in minerals. It is proposed that there is a threshold temperature, T (0), beyond which fission tracks are erased within a time t (0), which is independent of the current state of lattice deformation. This implies that iso-annealing curves should converge to a fanning point in the Arrhenius pseudo-space (ln t vs. 1/T). Based on the proposed hypothesis, and laboratory and geological data, annealing equations are reevaluated. The geological timescale estimations of a model arising from this study are discussed through the calculation of partial annealing zone and closure temperature, and comparison with geological sample constraints found in literature. It is shown that the predictions given by this model are closer to field data on closure temperature and partial annealing zone than predictions given by previous models.
dc.description40
dc.description2
dc.description93
dc.description106
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundacao de Amparo a Pesquisa de Sao Paulo [2007/08393-0]
dc.descriptionMaterials Sciences and Engineering Division, Office of Basic Energy Sciences, US Department of Energy (DOE) [DE-AC05-76RL01830]
dc.descriptionUT-OR NL Governor's Chair program
dc.descriptionDepartment of Energy's Office of Biological and Environmental Research
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCNPq [473888/2007-6, 200016/2008-3]
dc.descriptionFundacao de Amparo a Pesquisa de Sao Paulo [2007/08393-0]
dc.descriptionMaterials Sciences and Engineering Division, Office of Basic Energy Sciences, US Department of Energy (DOE) [DE-AC05-76RL01830]
dc.languageen
dc.publisherSpringer
dc.publisherNew York
dc.publisherEUA
dc.relationPhysics And Chemistry Of Minerals
dc.relationPhys. Chem. Miner.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectFission tracks
dc.subjectAnnealing models
dc.subjectCritical temperature
dc.subjectZircon
dc.subjectRandomly Oriented Grains
dc.subjectRadiation-damage
dc.subjectKinetic-model
dc.subjectQualitative Description
dc.subjectInduced Amorphization
dc.subjectIon-track
dc.subjectApatite
dc.subjectMechanisms
dc.subjectFluorapatite
dc.subjectTemperature
dc.titleImproved zircon fission-track annealing model based on reevaluation of annealing data
dc.typeArtículos de revistas


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