Rate of dissolution of calcite spheres in the water column south of Hawaii. Circles are rates averaged over five adjacent spheres. Modeling equatorial Pacific sea floor sediments. Effects of different patterns of calcite dissolution on the 14 C age of surface sediments as a function of water depth. Measured 14C ages of surface sediments in the equatorial Pacific.
G denotes glacial, c carbonate, nc non-carbonate, and ml mixed layer.
Terms in the model which determine the dissolution necessary to produce the present day carbonate content and 14 C surface ages as a function of age and water depth for modern equatorial Pacific sediments. See text for key to symbols. Preservation flux from the Oxburgh model relative to the steady state preservation flux as a function of water depth for three non-carbonate rain rates. ND is for the observed late glacial carbonate content, AMR is for the Archer and Meier-Reimer pulse of carbonate deposition at the beginning of the Holocene. Note that all calculations yield negative carbonate fluxes relative to steady state.