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AAR KR2
MGDS_FeatureID lowest in hierarchy:
Activity:
Latitude:
-60.0000
Longitude:
152.5000
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
3200
Tectonic setting:
Full Spreading Rate (mm/a):
66.1
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
Korea SEIR (Australian-Antarctic Ridge) 160 E and 152.5 E (Feb-Mar 2011) found signals of venting with MAPRs (Korea national report in 2011 InterRidge News); Park et al. (2012): "The first- order segment KR2 can be divided into two segments - an axial high western segment, and a rift valley eastern segment. Hydrothermal vent signals were mainly found in the western part of the segment."; Baker et al. (2014): "profiles collected by Miniature Autonomous Plume Recorders (MAPRs) on rock corers in March and December of 2011 to survey each segment, and an intensive CTD survey in Jan/Feb 2013 to pinpoint sites and sample plumes on KR1. Optical and oxidation-reduction potential (ORP, aka Eh) anomalies indicate multiple active sites on both segments. Seven profiles on KR2 found 3 sites, each separated by ~25 km."
Year and How Discovered (if active, visual confirmation is listed first):
2011 plume only
Discovery References (text):
Park, S.H. (2011) Korea national report in InterRidge News: http://www.interridge.org/files/interridge/InterRidge%20News%20-%202011-sm.pdf
Park. S. H. et al. (2012) Geochemistry of lavas from the Australian-Antarctic Ridge, easternmost Southeast Indian Ridge, AGU Fall meeing, V11D-2807 Poster
Baker et al. (2014) Abundant Hydrothermal Venting in the Southern Ocean Near 62°S/159°E on the Australian-Antarctic Ridge. American Geophysical Union, Fall Meeting 2014, abstract #OS53C-1057.
RDF link: