Mathematics – Logic
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995gecoa..59.5191c&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 59, Issue 24, pp.5191-5197
Mathematics
Logic
1
Scientific paper
The Rb---Sr dating of sphalerites is a powerful method for directly determining the age of base metal deposits and testing models for large-scale fluid flow. However, the uncertainty over the exact host phases for the trace amounts of Rb and Sr and the causes of variability in Rb/Sr have caused concern over the reliability of the method. Here we show that the Polaris MVT deposit, with a geologically well-constrained age of formation, confirmed by paleomagnetic measurements, and hosted in significantly older sedimentary rocks, yields a consistent Rb---Sr age of 366 ± 15 Ma, providing the first unequivocal vindication of the reliability of the method.
Christensen John N.
Halliday Alex N.
Kesler Stephen E.
Leigh Kenneth E.
Randell Roderick N.
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