You are here
EPR, 18 32'S
Name Alias(es):
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Activity:
Maximum Temperature:
55
Latitude:
-18.5550
Longitude:
-113.4160
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2647
Minimum Depth (mbsl):
2617
Tectonic setting:
Full Spreading Rate (mm/a):
147.2
Host Rock:
MORB
Deposit Type:
NotProvided
Notes on Vent Field Description:
diffuse venting at 18 31' and 18 33'S, EPR; Auzende et al. (1996): "Shimmering water (up to 55 C) is emanating through the talus along the faults. This type of discharge covers surface areas of up to a few hundred square meters and has white colored, meter-sized bacterial patches and no hydrothermal chimneys."; note: "HUMP zone" in Auzende et al. (1996) extends from 18 22' to 18 37'S; hydrothermal plumes virtually continuous between 17 20' and 18 40'S
Notes Relevant to Biology:
Auzende et al. (1996): "No sessile fauna except the bacteria were observed, however, crabs and fishes were abundant"
Year and How Discovered (if active, visual confirmation is listed first):
1993 submersible Nautile
Discovery References (text):
JM Auzende et al. (1996) Recent tectonic, magmatic, and hydrothermal activity on the East Pacific Rise between 17°S and 19°S: Submersible observations. J Geophys Res 101(B8): 17995-18010.
Other References (text):
Charlou et al., J. Geophys. Res., 101, 15899-15919, 1996, Mineral and gas chemistry of hydrothermal fluids on an ultrafast spreading ridge: East Pacific Rise, 17° to 19°S (Naudur cruise, 1993) phase separation processes controlled by volcanic and tectonic activity.
RDF link: