Physics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54.2603a&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 54, Issue 9, pp.2603-2609
Physics
10
Scientific paper
18 O determinations of bone phosphate ( 18 O p ) have been performed on a suite of modern kangaroos and wallabies (known collectively as Macropods) that come from a wide variety of climatic zones within Australia. Macropod 18 O p values range from 16 to over 30%. (V-SMOW) and are found to correlate with environmental relative humidities. As Macropods are herbivorous mammals with low drinking water requirements that consume large amounts of plant leaf water, it is likely that the 18 O p signature of Macropods is reflecting leaf water fractionation processes that are controlled by relative humidity. These results indicate that 18 O p from fossil bones of Macropods and similar drought-tolerant herbivorous mammals may yield palaeohumidity estimates.
Ayliffe Linda K.
Chivas Allan R.
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