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
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| 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.
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- Brichet, E.
- Druffel, E.
- Rona, P.A.
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| 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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