Physics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.3273b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 56, Issue 8, pp.3273-3279
Physics
15
Scientific paper
Free-drifting sediment traps deployed at 400, 1500, and 3200 m were used to collect particles near the US JGOFS Time-Series Station (31°49.5'N and 64°08.2' W) in the Atlantic Ocean. Acantharian specimens isolated from our samples were abundant at the 400-m depth horizon and were rare to non-existent in our 1500-m traps. No specimens were detected in the 3200-m traps. This trend parallels those noted for the Pacific and has been linked to the oceans' Sr / Cl profiles. Our collections revealed the presence of myriad, heretofore undocumented, minute SrSO 4 particles. These particles are most likely related to the acantharian reproductive cycle. The extreme abundance of acantharians and acanthari-anderived particles may have implications beyond the oceans' Sr budgets. Barium/strontium molar ratios in acantharian-derived celestite on the order of 3 sx 10 -3 indicate that acantharians may play an important role in oceanic Ba cycling.
Bernstein Renate E.
Betzer Peter R.
Byrne Robert H.
Greco Anthony M.
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