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Various Recombination Kinetics of Al Centers in Quartz from the Elbrus Volcano and the Eldzhurtinsky Granite Rocks

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Abstract.

Recombination of paramagnetic [AlO4 −/h+] centers in quartz from the Elbrus volcanic rocks and the Eldzhurtinsky intrusive rocks has been studied. Laboratory annealing experiments have shown that simple first- or second-order kinetics does not describe recombination correctly. It was assumed that there are three recombination processes in quartz and the decay of concentration of Al centers for isothermal annealing experiments was simulated by a sum of two exponential and one hyperbolic functions. Recombination parameters of these processes have been measured. The possible origin of different recombination mechanisms of Al centers in quartz and the significance of the obtained results for EPR dating are discussed.

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Authors and Affiliations

  1. Faculty of Geology, Lomonosov Moscow State University, Moscow, Russian Federation

    S. V. Vyatkin, D. G. Koshchug & S. S. Makhotin

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  1. S. V. Vyatkin
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  2. D. G. Koshchug
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  3. S. S. Makhotin
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Authors' address: Dmitry G. Koshchug, Faculty of Geology, Lomonosov Moscow State University, 119899 Moscow, Russian Federation

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Vyatkin, S., Koshchug, D. & Makhotin, S. Various Recombination Kinetics of Al Centers in Quartz from the Elbrus Volcano and the Eldzhurtinsky Granite Rocks. Appl Magn Reson 32, 333–344 (2007). https://doi.org/10.1007/s00723-007-0023-2

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  • DOI: https://doi.org/10.1007/s00723-007-0023-2

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