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GEISEIR site 2, segment J4
Name Alias(es):
SEIR, 21
MGDS_FeatureID lowest in hierarchy:
Activity:
Latitude:
-41.2520
Longitude:
79.1030
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2800
Tectonic setting:
Full Spreading Rate (mm/a):
65.9
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
Southward et al. (1997): 41 14.95'S, 79 06.04'E, "At one anomaly, near the centre of a ridge segment, 2770 to 2800 m depth, a geological dredge haul contained eight specimens of the new barnacle. The dredge came up full of basalt (600 kg) after just over one hour on the bottom, having traversed an estimated 550 m along the sea bed."
Notes Relevant to Biology:
Southward et al. (1997): "new species of the stalked barnacle Neolepas"
Year and How Discovered (if active, visual confirmation is listed first):
1996 plume and dredge only
Discovery References (text):
Southward, A. J., W. A. Newman, V. Tunnicliffe, D. Scheirer, and K. Johnson. 1997. Biological indicators confirm hydrothermal venting on the Southeast Indian Ridge. BRIDGE Newsletter 12: 35-39
Scheirer et al., Geophys. Res. Lett., 25, 97-100, 1998, Detection of hydrothermal plumes along the Southeast Indian Ridge near the Amsterdam-St. Paul Plateau
Other References (text):
Baker, E. T., C. Hémond, A. Briais, M. Maia, D. S. Scheirer, S. L. Walker, T. Wang, and Y. J. Chen (2014), Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge, Geochem. Geophys. Geosyst., 15, 3198-3211, doi:10.1002/2014GC005344
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