Abstract
Pb-Pb step-leaching (PbSL) is a digestion technique based on sequential acid treatment of a mineral resulting in the selective recovery of radiogenic and common Pb components from the crystal lattice, making single-phase Pb-Pb dating possible. Developed originally by R. Frei and colleagues at Bern, the technique was recently applied to Proterozoic garnets to test the reliability of PbSL as a dating tool in multiply deformed terranes (Tonelli 2002).
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References
Collerson KD, Kamber BS, Schoenberg R (2002) Applications of accurate, high-precision Pb isotope ratio measurements by multicollector ICP-MS. Chem Geol 188:65–83
Frei R, Villa IM, Nagler ThF, Kramers JD, Przybylowicz WJ, Prozesky VM, Hofmann BA, Kamber BS (1997) Single mineral dating by the Pb-Pb step leaching method: Assessing the mechanisms. Geochim Cosmochim Acta 61:393–414
Tonelli M (2002) An evaluation of Pb step leaching geochronology as applied to high-grade metamorphic terranes. PhD Thesis, University of Melbourne (unpubl)
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© 2005 Springer-Verlag Berlin Heidelberg
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Bassano, K., Hergt, J., Maas, R., Woodhead, J. (2005). Direct dating of ore minerals: A feasibility study of the Pb-Pb isotope step-leaching technique. In: Mao, J., Bierlein, F.P. (eds) Mineral Deposit Research: Meeting the Global Challenge. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-27946-6_185
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DOI: https://doi.org/10.1007/3-540-27946-6_185
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