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EPR, 13 N
Name Alias(es):
12 50'N, EPR
Zone A
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Actinoir
Bryce Canyon
Chandelier
Cathedrales
Chain
Elsa
Genesis
Grandbonum
Pogonord
Pogosud
Totem
Tour de Pise
Dorian
Jumeaux
Activity:
Maximum Temperature:
380
Latitude:
12.8333
Longitude:
-103.9500
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2630
Minimum Depth (mbsl):
2600
Tectonic setting:
Full Spreading Rate (mm/a):
91.1
Host Rock:
MORB
Deposit Type:
PMS, polymetallic massive sulfides
Notes on Vent Field Description:
axial vents, numerous large active and inactive sulfide deposits, Fe oxide gossans, and low-temperature Fe oxide and silica chimneys on the ridge and adjacent seamounts (up to 200 m x 800 m explored dimensions); 12 50'N (Chandelier, Cathedrales, Chain, Tour de Pise), 12 47'N (Bryce Canyon)
Notes Relevant to Biology:
Vestimentifera, Cirripedia, actinarians, Vesicomyidae, Bythograeidae, Mytilidae, Zoarcidae, Alvinellidae; see Fustec et al. (1987) and Desbruyeres (1995)
Year and How Discovered (if active, visual confirmation is listed first):
1982 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity
Discovery References (text):
[Desbruyeres et al. (1982) Donnees ecologiques sur un nouveau site d'hydrothermalisme actif de la ride du Pacifique oriental. C. R. Acad. Sci. 295: 489-494]
Hekinian, R. et al. (1983) East Pacific Rise near 13 N: geology of new hydrothermal fields. Science 219: 1321-1324.
Other References (text):
Fustec, et al., 1987. Deep sea hydrothermal vent communities at 13°N on the East Pacific Rise: Microdistribution and temporal variations. Biol. Oceanogr., 4(2): 121-164
Y Fouquet et al., Mar. Geol., 84, 145-178, 1988, Geological setting and mineralogical and geochemical investigations on sulfide deposits near 13 N on the East Pacific Rise
Desbruyeres (1995) Temporal variations of deep-sea hydrothermal communities at 13 N EPR. InterRidge News 4(2): 6-10.
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