Duration of hydrothermal activity at an oceanic spreading center, Mid-Atlantic Ridge (lat 26/sup 0/N)

Journal Article · Thu Apr 01 00:00:00 EST 1976 · Geology; (United States)

OSTI ID:7240257

Scott, R B ^[1]; Malpas, J; Rona, P A; Udintsev, G

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1. Texas A and M Univ., College Station

Hydrothermal manganese oxide coats talus on the Mid-Atlantic Ridge at lat 26/sup 0/N until spreading moves the rock past the thermally and structurally active rift-valley wall. Hydrothermal activity is replaced by hydrogenous ferromanganese oxide precipitation on ocean crust older than 0.7 m.y. on the ridge-crest highlands.

• OSTI ID: 7240257
• Journal Information: Geology; (United States), Vol. 4:4
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
ATLANTIC OCEAN
HYDROTHERMAL SYSTEMS
BASALT
HYDROTHERMAL ALTERATION
GEOLOGIC DEPOSITS
SEA-FLOOR SPREADING
MANGANESE OXIDES
MINERALOGY
NATURAL OCCURRENCE
RIFT ZONES
SEAWATER
CHALCOGENIDES
GEOLOGIC STRUCTURES
GEOTHERMAL SYSTEMS
HYDROGEN COMPOUNDS
IGNEOUS ROCKS
MANGANESE COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
ROCKS
SEAS
SURFACE WATERS
TRANSITION ELEMENT COMPOUNDS
WATER
580202* - Geophysics- Volcanology- (1980-1989)