EPR, 28.4 S, Segment W4

Name Alias(es):

MGDS_FeatureID lowest in hierarchy:

27S-32S

Vent Sites:

Activity:

active, inferred

Maximum Temperature:

Latitude:

-28.4170

Longitude:

-112.9640

Location on map:

Ocean:

S. Pacific

Region:

S EPR

National Jurisdiction:

high seas

Maximum or Single Reported Depth (mbsl):

2350

Minimum Depth (mbsl):

Tectonic setting:

mid-ocean ridge

Full Spreading Rate (mm/a):

150.9

Volcano Number (if applicable):

Host Rock:

NotProvided

Deposit Type:

NotProvided

Notes on Vent Field Description:

Baker et al. (2002): "On the west ridge we found indications of the most energetic venting in the study area, based on a plume rise height >300 m at 28.45 S near the center of plume activity that stretched for more than 20 km along axis"

Notes Relevant to Biology:

Year and How Discovered (if active, visual confirmation is listed first):

1998 plume only

Discovery References (text):

(plume only) Baker et al., 2002, J. Geophys. Res. 107, Hydrothermal venting along Earth's fastest spreading center: East Pacific Rise, 27.5°-32.3°, doi:10.1029/2001JB000651.

Other References (text):

Hey, R., et al. (2004) Tectonic/volcanic segmentation and controls on hydrothermal venting along the Earth's fastest seafloor spreading system, EPR 27°-32°S, Geochemistry, Geophysics, Geosystems, 5(12): 10.1029/2004GC000764.

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