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Macdonald Seamount
Name Alias(es):
McDonald Seamount
MGDS_FeatureID lowest in hierarchy:
Activity:
Max Temperature Category:
Latitude:
-28.9833
Longitude:
-140.2500
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
150
Tectonic setting:
Volcano Number (if applicable):
Host Rock:
NotProvided
Deposit Type:
NFS, Fe & Mn crusts and sediments
Notes on Vent Field Description:
Austral Islands; deposits of Fe & Mn oxides and sediments associated with active vents in summit caldera of seamount; note: the 1989 sampling was during volcanic eruption
Year and How Discovered (if active, visual confirmation is listed first):
1989 submersible Cyana
Discovery References (text):
Cheminee et al., Earth Planet. Sci. Lett., 107, 318-327, 1991, Gas-rich submarine exhalation during the 1989 eruption of Macdonald Seamount.
Other References (text):
[Hékinian et al., Econ. Geol., 88, 2099-2121, 1993, Hydrothermal Fe and Si oxyhydroxide deposits from South Pacific intraplate volcanoes and East Pacific Rise axial and off-axial regions]
[(assume dredge samples) Stoffers et al. (1993) Comparative mineralogy and geochemistry of hydrothermal iron-rich crusts from the Pitcairn, Teahitia-Mehitia, and Macdonald hot spot areas of the S.W. Pacific. Mar. Georesourc. Geotechnol. 11, 45-86].
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