Radiation-enhanced fission track annealing revisited and consequences for apatite thermochronometry

Ion-Track Annealing Kinetics in Apatite

Fission tracks in minerals, such as apatite and zircon, generated by energetic nuclear fragments that result from spontaneous fission of U, are used for determining the age and thermal history of Earth’s crust. Taken together with other techniques, the data infer rates of tectonic uplift and landscape evolution [1]. At elevated temperatures, these tracks shrink in size and fragment into section...

Cooling history and exhumation of the nepheline syenites, NW Iran: constraints from apatite fission track

Thermal history and apatite fission-track ages were determined for the Kaleybar, Razgah and Bozqush alkaline intrusions which display Eocene-Oligocene stratigraphic age. These subduction-related intrusions are located in the Alborz-Azarbaijan magmatic belt which is characterized by a Paleogene magmatic flare-up associated with extensional/transtensional tectonism. The mean of Uranium content an...

Thermal annealing mechanisms of latent fission tracks: Apatite vs. zircon

Thermal annealing of unetched fission tracks in apatite

a Department of Earth & Environmental Sciences, University of Michigan, Ann Arbor, MI 48109-1005, USA b School of Earth Sciences, The University of Melbourne, Melbourne, Vic 3010, Australia c Institute of Nuclear Physics, National Nuclear Centre, 010008 Astana, Kazakhstan d Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109-2104, USA e Depar...

Numerical investigations of apatite 4 He / 3 He thermochronometry

[1] Apatite He/He thermochronometry has the potential to constrain cooling histories for individual samples provided that several presently untested assumptions are valid. Here we simulate the sensitivity of He/He spectra to assumptions regarding geometric model, crystallographic anisotropy, broken grain terminations, parent nuclide zonation, and the accuracy of results obtained from analyses o...