Marine reservoir corrections for Moreton Bay, Australia

We present the first direct assessment of marine reservoir effects in the Moreton Bay region using radiocarbon dating of known-age, pre-AD 1950, shell samples from the east coast of Stradbroke Island and archaeological shell/charcoal pairs from Peel Island in Moreton Bay. The resulting Delta R value of 9 +/- 19 (14)C years for the open ocean conforms to regional values established for northeast Australia of 12 +/- 10 (14)C years. Negative Delta R values of -65 +/- 61 (14)C years and -216 +/- 94 (14)C years for southern Moreton Bay highlight the potential for larger offsets over the last similar to 900 years. These may be linked to changing terrestrial inputs and local circulation patterns.