The Pliocene Environment of Antarctica

Diatom Evidence for the Onset of Pliocene Cooling from AND-1B, McMurdo Sound, Antarctica

The late Pliocene, ~3.3–3.0 Ma, is the most recent interval of sustained global warmth in the geologic past. This window is the focus of climate reconstruction efforts by the U.S. Geological Survey’s Pliocene Research, Interpretation, and Synoptic Mapping (PRISM) Data/Model Cooperative, and may provide a useful climate analog for the coming century. Reconstructions of past surface ocean conditi...

Diffuse Spectral Reflectance-derived Pliocene and Pleistocene Periodicity from Weddell Sea, Antarctica Sediment Cores

Exposure age and ice-sheet model constraints on Pliocene East Antarctic ice sheet dynamics

The Late Pliocene epoch is a potential analogue for future climate in a warming world. Here we reconstruct Plio-Pleistocene East Antarctic Ice Sheet (EAIS) variability using cosmogenic nuclide exposure ages and model simulations to better understand ice sheet behaviour under such warm conditions. New and previously published exposure ages indicate interior-thickening during the Pliocene. An ice...

Relationships Between Ice-Rafted Detritus, Geochemical Trends, and Biogenic Components of Early Pliocene Ocean Sediment in Weddell Sea, Antarctica

Intermediate Production of Mono- and Diolein by an Immobilized Lipase from Candida antarctica

Lipase from Candida antarctica, fixed on macroporous acrylic resin, has been used for the intermediate production of mono- and diolein by hydrolysis of triolein. The effect of altering concentrations of triolein and glycerol and the function of the molecular sieve on the hydrolysis reaction of triolein were investigated. The highest hydrolysis yield was observed for the utmost concentration of ...