Publication Date:
2013-10-01
Description:
Sanidine from the Fish Canyon Tuff is regularly used as a neutron flux monitor by 40 Ar/ 39 Ar geochronologists. A new sampling of the Fish Canyon Tuff (denoted FCs-EK) has yielded sanidine that relative to FC-2 is confirmed here to have an R value of 0.9997 ± 0.0100, which is indistinguishable from 1. The new sample will allow for continuity as many 40 Ar/ 39 Ar laboratories have exhausted their supplies of FC-2. FCs-EK is now available in significant quantities from the Scottish Universities Environmental Research Centre. Supplementary material: A table of Ar isotopic data is available at http://www.geolsoc.org.uk/SUP18632
Print ISSN:
0305-8719
Electronic ISSN:
2041-4927
Topics:
Geosciences
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