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Abstract

Summary

The apatite (U–Th)/He (AHe) system has rapidly become a very popular thermochronometer to constrain burial and exhumation phases in a variety of geological contexts, including fold and thrust belt. In this particular case, detrital apatite crystals come from different sources and are characterized by different pre-deposit ages and grain chemistry. However the actual He diffusion models are not well constrained and do not fully explain the mechanism of He retention. This is particularly true for detrital apatite crystals and AHe age interpretation can be tricky. In order to have a deeper insight on this issue, multidisciplinary studies on apatite combining physical studies were performed. We propose new He diffusion coefficient, so closure temperature and a physical He diffusion model. We will propose a new way of interpreting AHe datasets on fold and thrust belt samples more particularly, because of their own apatite characteristics. Two examples from Peruvian Subandean zone and south Pyrenean foreland will be given. We will show how a better interpretation of He diffusivity will improve significantly AHe data and thermal histories obtained by data inversion.

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/content/papers/10.3997/2214-4609.201413481
2015-06-01
2024-04-29

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References

  1. Farley, K.A.
    , 2000. Helium diffusion from apatite: general behavior as illustrated by Durango fluorapatite. J. Geophys. Res., 105: 2903–2914.
     [Google Scholar]
  2. Fillon, C., Gautheron, C., van der Beek, P.A.
    , 2013. Oligocene-Miocene burial and exhumation of the Southern Pyrenean foreland quantified by low-temperature thermochronology. Journal of the Geological Society, 170: 67–77.
     [Google Scholar]
  3. Flowers, R., Ketcham, R.A., Shuster, D., Farley, K.A.
    , 2009. Apatite (U–Th)/He thermochronology using a radiation damage accumulation and annealing model. Geochimica et Cosmochimica Acta73, 2347–2365.
     [Google Scholar]
  4. Gautheron, C., Tassan-got, L., Barbarand, J., Pagel, M.
    , 2009. Effect of alpha-damage annealing on apatite (U–Th)/He thermochronology. Chemical Geology266, 166–179.
     [Google Scholar]
  5. Gautheron, C., Barbarand, J., KetchamR.A., Tassan-got, L., van der Beek, P., Pagel, M., Pinna-Jamme, R., Couffignal, F., Fialin, M.
    , 2013a. Chemical influence on α-recoil damage annealing in apatite: implications for (U-Th)/He dating. Chemical Geology351, 257–267.
     [Google Scholar]
  6. Gautheron, C., Espurt, N., Barbarand, J., Roddaz, M., Baby, P., Brusset, S., Tassan-got, L., Douville, E.
    , 2013b. Direct dating of thick- and thin-skin thrusts in the Peruvian Subandean zone through apatite (U-Th)/He and fission track thermochronometry. Basin Research, 25: 419–435.
     [Google Scholar]
  7. Gerin, C., Mbongo-Djimbi, D., Oliviero, E., Bachelet, C., Roques, J., Tassan-Got, L., Gautheron, C.
    , 2014. Impact of damage on He diffusion in apatite: a multi-scale analysis, 14th International Conference on Thermochronology, Chamonix. 8–12 September.
     [Google Scholar]
  8. Mbongo-DjimbiD., GautheronC., Roques, J., Tassan-Got, L., Gerin, C., Simoni, E.
    . Apatite composition effect on (U-Th)/He thermochronometer: an atomistic point of view. In review at Geochimica Cosmochimica Acta.
     [Google Scholar]
  9. Shuster, D., Farley, K.A.
    , 2009. The influence of artificial radiation damage and thermal annealing on helium diffusion kinetics in apatite. Geochim. Cosmochim. Acta, 73(183–196).
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201413481
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Apatite (U-Th)/He Thermochronology Data Interpretation in Fold and Thrust Belt - New Insights from Physical Point of View
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201413481
/content/papers/10.3997/2214-4609.201413481
/content/papers/10.3997/2214-4609.201413481
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