Anomalous mercury in near-bottom water of a Mid-Atlantic Rift valley

Details Anomalous mercury in near-bottom water of a Mid-Atlantic Rift valley Anomalous mercury in near-bottom water of a Mid-Atlantic Rift valley

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.251..489c&link_type=abstract

Nature, Volume 251, Issue 5475, pp. 489-490 (1974).

Physics

2

Scientific paper

MERCURY analysis1 of over 1,000 water samples from GEOSECS stations in the western Atlantic indicated extremely low mercury concentrations (2-40 ng 1-1) in much of the ocean between 15°N and 35°S, and identified a large core of water of relatively high concentration (80-400 ng 1-1) between 25°N and 50°N. These increased concentrations may result1 from the entrainment of Hg which diffuses from the active spreading centre of the Mid-Atlantic Ridge, by Mediterranean water which flows over the ridge into the western basin of the Atlantic Ocean. Mercury concentrations are as high as 1,370 ng 1-1 at a depth of 2,435 m at GEOSECS station 27 (42°00'N, 41°59'W), (ref. 1).

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