Annealing experiments on induced fission tracks in apatite: Measurements of horizontal-confined track lengths and track densities in basal sections and randomly oriented grains

dc.creatorTello, CA
dc.creatorPalissari, R
dc.creatorHadler, JC
dc.creatorIunes, PJ
dc.creatorGuedes, S
dc.creatorCurvo, EAC
dc.creatorPaulo, SR
dc.date2006
dc.dateFEB-MAR
dc.date2014-11-15T18:20:59Z
dc.date2015-11-26T17:21:00Z
dc.date2014-11-15T18:20:59Z
dc.date2015-11-26T17:21:00Z
dc.date.accessioned2018-03-29T00:08:34Z
dc.date.available2018-03-29T00:08:34Z
dc.identifierAmerican Mineralogist. Mineralogical Soc Amer, v. 91, n. 41700, n. 252, n. 260, 2006.
dc.identifier0003-004X
dc.identifierWOS:000235472000003
dc.identifier10.2138/am.2006.1269
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/77578
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/77578
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/77578
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1283269
dc.descriptionTo improve kinetic models for apatite fission-track annealing, we present new experimental annealing data that complement previously published data. To determine the degree of annealing of induced tracks, surface density (p), and mean horizontal-confined track lengths (1). were measured, both for basal and randomly oriented faces. Our annealing data were obtained by submitting an apatite sample collected in ltambe, Bahia, Brazil, to 46 different isothermal treatments where temperature ranged from 150 to 600 degrees C (duration of 1, 10, 100, and 1000 h). To compare the behavior of Itambe to Durango apatite, the latter was also annealed for I h in 9 isothermal experiments at temperatures between 240 and 380 degrees C. Our results show that the l/l(0) values in Durango are systematically smaller than those in Itambe sample, both in basal and random faces. The curves depicting relative track density reduction, rho/rho(0), and relative mean confined track length reduction, l/l(0), as a function of time and temperature, are similar for rho/rho(0) > similar to 0.5, but different for rho/rho(0) < similar to 0.5. In this interval, rho/rho(0),can be measured but the measurement of l/l(0) is very difficult because the confined tracks become undetectable. Measurements of rho/rho(0) and l/l(0) for tracks revealed in basal surfaces are systematically lower (but this difference is < 3%) than those in randomly oriented ones.
dc.description91
dc.description41700
dc.description252
dc.description260
dc.languageen
dc.publisherMineralogical Soc Amer
dc.publisherChantilly
dc.publisherEUA
dc.relationAmerican Mineralogist
dc.relationAm. Miner.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectapatite
dc.subjectconfined tracks
dc.subjectfission track dating
dc.subjectcrystallographic orientation
dc.subjectCrystallographic Orientation
dc.subjectKinetics
dc.subjectFluorapatite
dc.subjectVariability
dc.subjectAnisotropy
dc.titleAnnealing experiments on induced fission tracks in apatite: Measurements of horizontal-confined track lengths and track densities in basal sections and randomly oriented grains
dc.typeArtículos de revistas


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