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Geochronology of TAG and Snakepit hydrothermal fields, Mid-Atlantic Ridge: Witness to a long and complex hydrothermal history
Lalou, C.; Thompson, G.; Arnold, M.; Brichet, E.; Druffel, E.; Rona, P.A. (1990). Geochronology of TAG and Snakepit hydrothermal fields, Mid-Atlantic Ridge: Witness to a long and complex hydrothermal history. Earth Planet. Sci. Lett. 97(1-2): 113-128
In: Earth and Planetary Science Letters. Elsevier: Amsterdam. ISSN 0012-821X; e-ISSN 1385-013X, more
Peer reviewed article  
Available in  Authors 
Keywords
    AS, Mid-Atlantic Ridge
    Isotopes > Lead isotopes > Lead 210
    Isotopes > Thorium isotopes
    Isotopes > Uranium isotopes
    Measurement > Geochronometry
    Measurement > Geochronometry > Radiometric dating
    Measurement > Geochronometry > Radiometric dating > Radiocarbon dating
    Sediments > Chemical sediments > Hydrothermal deposits
    Water springs > Geothermal springs > Hydrothermal springs
    Mid-Atlantic Ridge [Marine Regions]
    Marine/Coastal
Authors  Top 
  • Lalou, C.
  • Thompson, G.
  • Arnold, M.
  • Brichet, E.
  • Druffel, E.
  • Rona, P.A.
Abstract
    Geochronological studies of a large number of precipitates from the TAG hydrothermal field and of few samples from Snakepit hydrothermal field of the Mid-Atlantic Ridge show intermittent repeated hydrothermal events at both sites. 210Pb/Pb and 230Th/ 234U measurements of sulfides, iron and manganese oxides, and 14C measurements of carbonates combined with observations of hydrothermal events recorded as discrete layers in sediment cores provide the basis for unravelling the temporal history of the fields.
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