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Gakkel Ridge, 7.5 E
Name Alias(es):
Site 4, Gakkel Ridge
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Activity:
Maximum Temperature:
Latitude:
85.0167
Longitude:
7.4500
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
3600
Minimum Depth (mbsl):
Tectonic setting:
Full Spreading Rate (mm/a):
12.3
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
located at Sparse Magmatic Zone; Baker et al. (2004): "The only identified site located within the ~280-km-long Sparsely Magmatic Zone occurs on an elongate axial ridge centered near 7°30′E in the most peridotite-rich section of the Gakkel Ridge, where dredging found no evidence of volcanic activity "
Notes Relevant to Biology:
Year and How Discovered (if active, visual confirmation is listed first):
2001 plume only
Discovery References (text):
(Plume only) Edmonds, H.N. et al. (2003) Discovery of abundant hydrothermal venting on the ultraslow-spreading Gakkel ridge in the Arctic Ocean. Nature 421: 252-256.
Other References (text):
Michael et al. (2001) Results of the Arctic Mid-Ocean Ridge Expedition - AMORE 2001- Seafloor Spreading at the Top of the World. InterRidge News 10(2): 57-60
Michael, P.J. et al. (2003) Magmatic and amagmatic seafloor generation at the ultraslow-spreading Gakkel ridge, Arctic Ocean. Nature 423: 956-961
Baker et al., 2004, Geochem. Geophys. Geosyst, 5, Q08002, Hydrothermal venting in magma deserts: The ultraslow-spreading Gakkel and Southwest Indian Ridges, doi:10.1029/2004GC000712
(Evidence for explosive eruption) Sohn, R.A. et al. (2008) Explosive volcanism on the ultraslow-spreading Gakkel ridge, Arctic Ocean. Nature 453: 1236-1238.
RDF link: