Février, M (1981): Investigation of manganese deposits from the Pacific and Atlantic oceans [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.876720, Supplement to: Février, M (1981): Hydrothermalisme et minéralisations sur la dorsale Est-Pacifique à 21° N. Ph. D. Dissertation, Université de Bretagne Occidentale, Brest, France, pdf 11 MB, 270 pp, https://archimer.ifremer.fr/doc/00034/14498/
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Abstract:
Submersible exploration on the eastern Pacific Ridge near 21 ° N has revealed an active hydrothermal system. It is manifested by the emission in the marine environment of hot and Highly mineralized fluids (370 ° C maximum). These fluids precipitate on contact with seawater and deposits of massive sulphides are built at the outlet of their sources. The mineralogical and geochemical study of the products associated with the emissions of hot fluids provides an initial evaluation of this type of deposit and leads to a comparison between the hydrothermalism responsible for the formation of sulphides and the hydrothermalism responsible for the formation of metal rich crusts formed of iron smectites and manganese oxides. This study is carried out with conventional mineralogical and geochemical investigations (optical and electronic microscopy, X-ray diffraction, X-ray fluorescence spectrometry, electron microprobe, neutron activation and mass spectrometry).
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Coverage:
Median Latitude: 28.388903 * Median Longitude: -73.585246 * South-bound Latitude: 20.898799 * West-bound Longitude: -109.043008 * North-bound Latitude: 36.945000 * East-bound Longitude: -33.067000
Date/Time Start: 1974-08-01T00:00:00 * Date/Time End: 1978-03-01T00:00:00
Event(s):
CY-74-26-14 * Latitude: 36.945000 * Longitude: -33.067000 * Date/Time: 1974-08-01T00:00:00 * Elevation: -2690.0 m * Location: Mid Atlantic Ridge * Campaign: FAMOUS 06-74 (FAMOUS74) * Basis: Le Noroit * Method/Device: Grab, on Cyana [Submersible] (GRAB_subCyana)
CY-78-06-11 * Latitude: 20.898799 * Longitude: -109.034415 * Date/Time: 1978-03-01T00:00:00 * Elevation: -2655.0 m * Location: East Pacific Rise * Campaign: CYAMEX * Basis: Cyana (Submersible) * Method/Device: Grab (GRAB)
CY-78-12-41 * Latitude: 20.905837 * Longitude: -109.043008 * Date/Time: 1978-03-01T00:00:00 * Elevation: -2692.0 m * Location: East Pacific Rise * Campaign: CYAMEX * Basis: Cyana (Submersible) * Method/Device: Grab (GRAB)
Comment:
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Février, M (1981): Detailed observation of manganese deposits associated with hydrothermal deposits of the East Pacific Rise and the FAMOUS Mid-Atlantic Ridge area. https://doi.org/10.1594/PANGAEA.876718
- Février, M (1981): Chemical composition of manganese deposits associated with hydrothermal deposits of the East Pacific Rise and the FAMOUS Mid-Atlantic Ridge area. https://doi.org/10.1594/PANGAEA.876719