Browsing by Author "King, PL"

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    Analytical techniques for probing small-scale layers that preserve information on gas–solid interactions
    (Mineralogical Society of America, 2018-11-01) Dalby, KN; Berger, JA; Brand, HEA; Cairney, JM; Eder, K; Eggins, SM; Herring, A; Hervig, RL; Kreider, PB; Mernagh, TB; Palm, AB; Renggli, CJ; Troitzsch, U; Yue, L; King, PL
    It has been 23 years (as we type) since Carroll and Holloway published the “Volatiles in Magmas” MSA volume (Carroll and Holloway 1994). The 1994 volume dealt with how to safely sample high-temperature gases and analytical methods for volatiles in glasses, which included secondary ion mass spectroscopy and vibrational spectroscopy. Since that time, some things have changed, and some have remained the same. There is still a disconnect between laboratory models of high-temperature gas–solid processes and field observations (Cashman et al. 2017), but we are starting to close that gap with rapid advances in technology. © 2018 Mineralogical Society of America
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    Radiocarbon age constraints for a pleistocene–holocene transition rock art style: the northern running figures of the East Alligator River region, western Arnhem Land, Australia
    (Elsevier, 2017-02-01) Jones, T; Levchenko, VA; King, PL; Troitzsch, U; Wesley, D; Williams, AA; Nayingull, A
    In this article we present nine radiocarbon age determinations producing a minimum age and a minimum age range for a regionally distinct rock art style known as the Northern Running Figures from Red Lily Lagoon, western Arnhem Land Australia. These radiocarbon determinations provide age constraints for both Pleistocene and early Holocene rock art in western Arnhem Land. The radiocarbon age determinations are produced from extracting calcium oxalate contained within mineral crusts associated with the rock art. Significantly this study employs a novel separation technique, designed to effectively isolate the oxalate compounds from the mineral crust sample using chemical pre-treatment, and demonstrates significant time offsets between radiocarbon age determinations for the calcium oxalates and other carbon inclusions contained within mineral crusts.© 2016, Elsevier Ltd.