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EPR, 20 S
Name Alias(es):
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Activity:
Maximum Temperature:
Latitude:
-20.0333
Longitude:
-113.6843
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
3000
Minimum Depth (mbsl):
Tectonic setting:
Full Spreading Rate (mm/a):
148.1
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
Lupton et al. (1999): "Dive targets at ... 20.0 S, ... were new sites which were visited by ALVIN for the first time in 1998/99. The selection of these new sites was based on camera tows conducted in the 1980's (Holler) and also by water column plume surveys conducted in 1993 and 1998. Although single exploratory dives at... 20.0 S failed to detect any hydrothermal venting..."
Notes Relevant to Biology:
Alvin dive 3334 log includes "Shrimp, Tube worms, Vent fish, Stauro medusae"
Year and How Discovered (if active, visual confirmation is listed first):
1999 submersible Alvin did not confirm activity
Discovery References (text):
(inactive vents only) Lupton, J., et al., Gas chemistry of hydrothermal fluids along the East Pacific Rise, 5°S to 32°S, Eos Trans. AGU, 80(46) Fall Meet. Suppl., F1099, 1999.
Other References (text):
RDF link: