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Ashadze-1
Name Alias(es):
Ashadze
Achadze 1
A1
"near Marathon Fault"
MAR, 12 58'N
Ашадзе 1
MGDS_FeatureID lowest in hierarchy:
Activity:
Maximum Temperature:
355
Max Temperature Category:
Latitude:
12.9733
Longitude:
-44.8633
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
4200
Minimum Depth (mbsl):
4080
Tectonic setting:
Full Spreading Rate (mm/a):
26.2
Host Rock:
ultramafic-hosted
Deposit Type:
NotProvided
Notes on Vent Field Description:
black smoker field on serpentinized peridotites; at the foot of the western slope of the MAR rift valley; deepest active black smoker field known as of 2009
Notes Relevant to Biology:
anemone Maractis rimicarivora, chaetopterid polychaete, very few Rimicaris exoculata; Fabri et al. abstract 4th CBE Symposium (2009): "surprisingly lacks known symbiotic species dominant at other vent areas on the MAR"
Year and How Discovered (if active, visual confirmation is listed first):
2003 TV profiling; 2007 ROV Victor 6000
Discovery References (text):
Beltenev, V., et al., New discoveries at 12°58'N, 44°52'W, MAR: Professor Logatchev-22 cruise, initial results, InterRidge News 12, 13-14, 2003
Fouquet et al. (2008) Serpentine cruise - ultramafic hosted hydrothermal deposits on the Mid-Atlantic Ridge: First submersible studies on Ashadze 1 and 2, Logatchev 2 and Krasnov vent fields. InterRidge News 17: 15-19.
Other References (text):
(plume only) Klinkhammer et al. (1985) Hydrothermal manganese plumes in the Mid-Atlantic Ridge rift valley. Nature 314: 727-731
Beltenev, V et al (2005) New hydrothermal sites at 13 N, Mid Atlantic Ridge. InterRidge News 14: 14-16
Fouquet, Y et al. (2007) Diversity of Ultramafic Hosted Hydrothermal Deposits on the Mid Atlantic Ridge: First Submersible Studies on Ashadze, Logatchev 2 and Krasnov Vent Fields During the Serpentine Cruise. American Geophysical Union, Fall Meeting 2007, abstract #T51F-03
Cherkashov et al. (2008) New important discoveries of hydrothermal deposits at the Mid-Atlantic Ridge (geological setting, composition and resources). IGC Oslo abstracts, session MRD-03 Recent developments on marine mineral deposits
Fabri et al. abstract 4th CBE Symposium (2009) Hydrothermal vent community of the new deep-sea field Ashadze-1, 12 58'N (MAR) and a comparison with all known northern Atlantic deep-sea hydrothermal communities.
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