Analyst and etching protocol effects on the reproducibility of apatite confined fission-track length measurement, and ambient-temperature annealing at decadal timescales
Murat T Tamer, Ling Chung, Richard A Ketcham, Andrew JW Gleadow
AMERICAN MINERALOGIST | MINERALOGICAL SOC AMER | Published : 2019
Previous inter-laboratory experiments on confined fission-track length measurements in apatite have consistently reported variation substantially in excess of statistical expectation. There are two primary causes for this variation: (1) differences in laboratory procedures and instrumentation, and (2) personal differences in perception and assessment between analysts. In this study, we narrow these elements down to two categories, etching procedure and analyst bias. We assembled a set of eight samples with induced tracks from four apatite varieties, initially irradiated between 2 and 43 years prior to etching. Two mounts were made containing aliquots of each sample to ensure identical etchin..View full abstract
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This research was supported by the Geology Foundation of the Jackson School of Geosciences and the School of Earth Sciences at the University of Melbourne. We thank R. Jonckheere and E. Sobel for thorough and helpful reviews, which improved the quality of this work.