Oxygen Isotope Paleotemperature Determinations of Australian Cainozoic Fossils
F. H. DORMAN 1 and
EDMUND D. GILL 2
1 Chemical Research Laboratories, Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia
2 National Museum of Victoria, Melbourne
Fossil marine shells collected in southern Victoria within half a degree of latitude of 38
°S have been analyzed for O18/O16 by mass spectroscopy, and their paleotemperatures have been determined. For the genera Chlamys, Ostrea, and Glycymeris the temperature rises from early to mid-Tertiary, then falls again to the present.