White mica ⁴⁰Ar/³⁹Ar age spectra and the timing of multiple episodes of high-Pmetamorphic mineral growth in the Cycladic eclogite-blueschist belt, Syros, Aegean Sea, Greece
New geochronology from Syros in the Cycladic eclogite-blueschist belt, Aegean Sea, Greece, shows that ⁴⁰Ar/³⁹Ar geochronology consistently dates microstructural events in metamorphic rocks. We demonstrate that the age spectra depend on microstructure in a predictable and systematic way. Ages can be inferred by applying the method of asymptotes and limits to data from the step-heating experiments. The results are consistent with previously published estimates for the timing of a sequence of...[Show more]
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|Source:||Journal of Metamorphic Geology|
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