Silicate and opal in the Ross Sea, supplement to: Ledford-Hoffman, P A; DeMaster, David J; Nittrouer, Charles A (1986): Biogenic-silica accumulation in the Ross Sea and the importance of Antarctic continental-shelf deposits in the marine silica budget. Geochimica et Cosmochimica Acta, 50(9), 2099-2110

P A Ledford-Hoffman, David J DeMaster & Charles A Nittrouer
Thirty-five box cores were collected from the continental shelf in the Ross Sea during cruises in January and February, 1983. Pb-210 and Pu-239, 240 geochronologies coupled with biogenic-silica measurements were used to calculate accumulation rates of biogenic silica. Sediment in the southern Ross Sea accumulates at rates ranging from <=0.6 to 2.7 mm/y, with the highest values occurring in the southwestern Ross Sea. Biogenic-silica content in surface sediments ranges from 2% (by weight) in Sulzberger...
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