Lapukhov, A S; Simonov, Vladimir A; Pavlova, L K (1999): Precious metals and volatiles in rocks of the Mid-Atlantic Ridge near 15°20'N [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.761475, Supplement to: Lapukhov, AS et al. (1999): Noble metals in the bedrocks from the Mid-Atlantic Ridge (15°20'N fracture zone). Translated from Okeanologiya, 1999, 39(5), 787-796, Oceanology, 39(5), 719-727
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Published: 1999 (exact date unknown) • DOI registered: 2011-07-04
Abstract:
Distribution patterns of gold, platinum group metals (PGE), and volatile components are studied in the main rock types of the Mid-Atlantic Ridge lithosphere (ultrabasites, gabbro, and basalts) from the transform fracture zone at 15°20'N. It is ascertained that PGE content depends on the reduction degree of fluids, on rock types, and on their formation conditions. It is noted that concentrations of refractory elements (Os, Ir, Rh) decrease, while those of fusible elements (Pt, Pd, Au) increase with depth. The chondrite type of distribution is only noted in the ultrabasite rocks. Increase in water and CO2 contents and in oxidation degree of fluids occurs with transition from basalts to ultrabasites, as well as from normal magmatic systems to fluid-enriched anomalous systems.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 15.283998 * Median Longitude: -45.784413 * South-bound Latitude: 14.700000 * West-bound Longitude: -46.846500 * North-bound Latitude: 15.860300 * East-bound Longitude: -44.759800
Event(s):
15S-14 * Latitude: 14.700000 * Longitude: -44.883300 * Elevation Start: -2000.0 m * Elevation End: -1790.0 m * Location: Cape Verde Fault Zone * Campaign: ANS15 * Basis: Akademik Nikolaj Strakhov * Method/Device: Dredge (DRG)
A9-11D * Latitude Start: 15.058300 * Longitude Start: -44.984700 * Latitude End: 15.058300 * Longitude End: -44.975000 * Elevation Start: -3400.0 m * Elevation End: -2700.0 m * Location: Central Atlantic * Campaign: Antares-9 * Basis: Antares * Method/Device: Dredge (DRG)
A9-21D * Latitude Start: 15.076000 * Longitude Start: -44.954300 * Latitude End: 15.075200 * Longitude End: -44.957200 * Elevation Start: -3700.0 m * Elevation End: -3000.0 m * Location: Central Atlantic * Campaign: Antares-9 * Basis: Antares * Method/Device: Dredge (DRG)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Lapukhov, AS; Simonov, VA; Pavlova, LK (1999): (Table 1) Precious metal contents in rocks from the fracture zone at 15°20'N, Mid-Atlantic Ridge. https://doi.org/10.1594/PANGAEA.761472
- Lapukhov, AS; Simonov, VA; Pavlova, LK (1999): (Table 3) Content of volatile components in the Mid-Atlantic Ridge lithosphere. https://doi.org/10.1594/PANGAEA.761474