fission-track dating


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fission-track dating

n
(General Physics) the dating of samples of minerals by comparing the tracks in them by fission fragments of the uranium nuclei they contain, before and after irradiation by neutrons
References in periodicals archive ?
This late Oligocene extension, associated to the early stage of the Gulf of California rift, is confirmed by apatite fission-track dating of samples from the Piaxtia batholith, which consistently indicate an episode of cooling at 25-23 Ma followed by a second episode at ~12.5 Ma.
Apatite fission-track dating of the "in situ" rocksamples from the Hunza Karakoram yielded ages between 3.9 [+ or -] 0.8 Ma to 7.5 [+ or -] 1.8 Ma in narrow age cluster (Table 1).
Conduction of fission-track dating studies on the apatite crystals using the external detector method and absolute approach yielded an average fission-track age of 29.15 +- 0.91 Ma and a pooled fission-track age of 29.10 +- 1.02 Ma for the Sillai Patti carbonatite of Malakand area.
Over the course of the past half century, thermochronology (or thermochronometry) has developed from merely fission-track dating and being "a hobby-horse of nuclear physicists" to a broad field incorporating a whole spectrum of low-temperature radiometric methods for the earth sciences.
Batches of apatite samples and zircons, collected from the international standard Fish Canyon Tuff (FCT) in San Juan Mountains, Colorado, USA, for fission-track dating method (FTDM) were characterized using, x-ray diffraction, x-ray fluorescence, scanning electron microscopy of low and high vacuum with energy dispersive x-ray spectrometer, apatite FTDM and thin section analysis.
This final installment of the three-part series examines U-Th/He and fission-track dating, so-called thermochronometric methods that provide cooling times from which uplift and erosion chronologies can be constructed.
Fission-track dating of volcanic ash grains provided the estimated ages of two sites on Flores, an island located east of Java and Bali, the scientists report in the March 12 Nature.
This late Oligocene extension, associated to the early stage of the Gulf of California rift, is confirmed by apatite fission-track dating of samples from the Piaxtla batholith, which consistently indicate an episode of cooling at 25-23 Ma followed by a second episode at ~12.5 Ma.