Results 141 to 150 of about 397 (177)
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ABSORPTION SPECTROSCOPY OF FISSION TRACK INDUCED RADIATION DAMAGE IN APATITE
Nuclear Tracks, 1981ABSTRACT In the present study a new method (absorption spectroscopy) is used for the investigation of fission track properties (annealing mechanism) and for the detection of fission tracks. We have extended our previous studies at room temperature and for apatite samples cut parallel to the c-axis, in the present study to liquid nitrogen temperature ...
W. Ritter, T.D. Märk, E. Bertagnolli
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Apatite fission-track dating applied to Precambrian terranes
Chemical Geology, 1986Abstract Fission-track (FT) dating has not commonly been applied to Precambrian rocks. Although it is possible to obtain formation ages on orthosilicates, it is apatite that is dated most frequently because of its specific characteristics with regard to track annealing, which makes it especially suited for reconstructing the final thermal history of ...
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Apatite fission-track age-spectrum based on projected track-length analysis
Chemical Geology: Isotope Geoscience section, 1991Projected length analysis of surface tracks enables the calculation of length dispersive spectra of apatite fission track ages determined by the grain-population technique. Different T-t paths result in characteristic apparent age-spectra which reveal the low temperature ( < 140°C) history of rocks.
G.A. Wagner, E. Hejl
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Evolving temperature histories from apatite fission-track data
Earth and Planetary Science Letters, 1995A procedure for quantifying thermal histories from apatite fission-track data is presented. Given an appropriate annealing algorithm, or forward model, the problem is to determine a best-fit thermal history and quantify the resolution of this solution. Also, a priori geological information should be readily incorporated. Due to the non-linear nature of
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On fission track dating of the terrestrial apatite crystals
International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1991Abstract The study of “fossil” and “fresh” tracks of apatite sample from East Siberia has been performed. We use the partial annealing procedure of “fossil” and “fresh” tracks (at 330°C during 24h) to determine the tracks age of that apatite and also to try to find the group of tracks longer that 238 U s.f. tracks.
V.P. Perelygin +4 more
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Apatite fission-track thermochronology of the Pennsylvania Appalachian Basin
Geomorphology, 1989Thirty-four apatite fission-track apparent ages and twenty-four track length distributions for ash bed samples from the Valley and Ridge Province and Upper Devonian to Upper Pennsylvania sedimentary samples from the Allegheny Front and Allegheny Plateau of Pennsylvania suggest that these regions represent different thermal (uplift) regimes as well as ...
Mary K. Roden, Donald S. Miller
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Some geometrical properties of fission-track-surface intersections in apatite
American Mineralogist, 2020Abstract Parallel fission-track-surface intersections identify the grains in an etched apatite mount that have been polished parallel to their prism faces and mark the orientations of their c-axes. Their lengths (Dpar) are a practical kinetic parameter that is indicative of the track annealing rate of apatite.
Raymond Jonckheere +3 more
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Apatite fission‐track analysis of Neogene exhumation in northern Corsica (France)
Terra Nova, 2001Apatite fission‐track analyses along a W–E‐orientated transect across northern Corsica indicate an important episode of crustal exhumation in late early Miocene time. Samples taken from the Alpine orogenic wedge, from the adjacent foreland basin and from the crystalline basement complex flooring the basin are completely reset. This implies that a ≥ 2.0–
Cavazza W. +3 more
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American Mineralogist, 2013
The external detector method (EDM) is a widely used technique in fission track thermochronology (FTT) in which two different minerals are concomitantly employed: spontaneous tracks are observed in apatite and induced ones in the muscovite external detector.
Soares, Cleber J. +7 more
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The external detector method (EDM) is a widely used technique in fission track thermochronology (FTT) in which two different minerals are concomitantly employed: spontaneous tracks are observed in apatite and induced ones in the muscovite external detector.
Soares, Cleber J. +7 more
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An extensive apatite fission-track study throughout the northern Apennines nappe belt
Radiation Measurements, 1999This paper takes into consideration more than t00 apatite fission-track analyses on samples coming from an approximately west-east cross-section throughout the Northern Apennines. This collisional chain is made of structural units and nappes (Ligurian and Tuscan Nappe) accreted to the Adriatic Foreland during the Neogene, which overthrust the Miocene ...
Abbate E +5 more
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