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Aden
Name Alias(es):
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Activity:
Maximum Temperature:
Max Temperature Category:
Latitude:
11.9500
Longitude:
43.6667
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
1600
Minimum Depth (mbsl):
1400
Tectonic setting:
Full Spreading Rate (mm/a):
19.1
Host Rock:
basalt-hosted
Deposit Type:
NFS, Fe & Mn rich crusts
Notes on Vent Field Description:
oceanic rift (early opening); widespread low temperature venting; Choukroune et al. (1988): "...the sites of recent volcanism, tectonics and hydrothermal activity within the axial part of the Gulf of Tadjoura coincide with topographic highs trending at a high angle (azimuth 135°) with respect to the average trend of the axial trough of the Gulf (azimuth 080°)."; note: Tadjoura Rift is western extension of Aden Ridge
Notes Relevant to Biology:
shrimps, actinians, galatheid crabs; Juniper et al. (1990): "The shrimp appeared to be suspension-feeding with the posterior abdomen attached to the basalt substratum and the thoracic appendages held in the overlying water."
Year and How Discovered (if active, visual confirmation is listed first):
1984 submersible Cyana
Discovery References (text):
[Choukroune et al. (1986) Tectonics of the westernmost Gulf of Aden and the Gulf of Tadjoura from submersible observations. Nature 319: 396-399, doi:10.1038/319396a0
Choukroune et al. (1988) Tectonics of an incipient oceanic rift. Marine Geophysical Researches 9: 147-163, DOI 10.1007/BF00369246.]
Other References (text):
[(might have different lat/lon) Cann et al., A hydrothermal deposit from the floor of the Gulf of Aden. Mineralogical Magazine, 41, 193-199, 1977]
Juniper et al. (1990) Regional-scale features of Northeast Pacific, East Pacific Rise, and Gulf of Aden vent communities. In: McMurray, ed., Gorda Ridge: a seafloor spreading center in the United States Exclusive Economic Zone. Springer, NY: 265-278.
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