Distribution of hydrothermal manganese over the Juan de Fuca Ridge

Journal Article · Sat Aug 01 00:00:00 EDT 1981 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL008i008p00873· OSTI ID:5885535

Jones, C J; Johnson, H P; Delaney, J R

Bottom waters from five hydrographic stations, spaced equally along a 400-km section of the Juan de Fuca Ridge north of the Blanco Fracture Zone, contain anomalously high concentrations of total dissolvable manganese (TDM). The two bottom-most bottles from each hydrocast (approx. 100 to 200 m above bottom) range from 8.3 to 108.9 nmol kg/sup -1/ with a median value of 12.0 nmol kg/sup -1/. This median is nearly a factor of 10 higher than similar near bottom samples obtained from two off-axis locations. Analogy to work on the East Pacific Rise implies that hydrothermal activity along the ridge axis is contributing substantially to the manganese content of the water column in this portion of the northeastern Pacific.

• Research Organization: Department of Oceanography, University of Washington, Seattle, Washington 98195
• OSTI ID: 5885535
• Journal Information: Geophys. Res. Lett.; (United States), Vol. 8:8
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
MANGANESE
ECOLOGICAL CONCENTRATION
PACIFIC OCEAN
RIFT ZONES
GEOCHEMISTRY
HYDROTHERMAL SYSTEMS
QUANTITY RATIO
SEA-FLOOR SPREADING
SEAWATER
THERMAL WATERS
CHEMISTRY
ELEMENTS
ENERGY SYSTEMS
GEOLOGIC STRUCTURES
GEOTHERMAL SYSTEMS
HYDROGEN COMPOUNDS
METALS
OXYGEN COMPOUNDS
SEAS
SURFACE WATERS
TRANSITION ELEMENTS
WATER
580500* - Oceanography- (1980-1989)
580400 - Geochemistry- (-1989)