DOI: 10.5176/2335-6774_1.1.3
Authors: Gavril Săbău and Elena Negulescu
Abstract:
Extensive statistical characterization of individual analyses, supported by chemical data, represents a highly
effective alternative in microprobe chemical dating of monazite, preventing possibly arbitrary a priori grouping of analyses. Age values and associated errors obtained for each analysis by error propagation through an explicit approximation of the age equation allow accurate subsequent statistical processing in order to identify consistent and meaningful populations. A procedure that involves seeking out of coherent clusters in complex age spectra, assessment of the overall probability distribution function, its deconvolution, and chemical correlations opportunely complements the high spatial resolution of the microprobe analyses, potentially highlighting the timing, context and duration of intricate events and processes in the thermotectonic evolution of igneous and metamorphic rocks.
Keywords: Geochronology, Monazite, Microprobe analyses, Age spectra processing, Deconvolution
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