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Ashadze-2
Name Alias(es):
Ashadze 2
A2
Ашадзе 2
MGDS_FeatureID lowest in hierarchy:
Activity:
Max Temperature Category:
Latitude:
12.9917
Longitude:
-44.9067
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
3300
Minimum Depth (mbsl):
3200
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; 2.5 miles NW of Ashadze 1; northern part of a wide terrace; small active crater with mixture of carbonates and copper-rich sulfides; Fouquet et al. (2008): "On the Ashadze 2 site a large group of smokers occurs, in a crater-shaped depression, about 25 m in diameter at the bottom of the graben structure. This constructional structure may indicate the sometimes-explosive nature of the hydrothermal fluid emissions."; Two types of hydrothermal deposits are observed: massive copper-rich sulfides associated with the black smokers and carbonate/sulfides chimneys (Fouquet et al. 2007).
Year and How Discovered (if active, visual confirmation is listed first):
2007 ROV Victor 6000; 2005 TV profiling, plume, and dredge did not confirm activity
Discovery References (text):
(did not confirm activity) 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
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.
RDF link: