You are here

Vityaz megamullion

Name Alias(es): 
Vityaz fracture zone
Vityaz transform fault
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Activity: 
Maximum Temperature: 
Latitude: 
-5.4000
Longitude: 
68.5833
Location on map: 
Ocean: 
Region: 
Maximum or Single Reported Depth (mbsl): 
3500
Minimum Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
36.0
Volcano Number (if applicable): 
Host Rock: 
NotProvided
Deposit Type: 
VSD, vein and disseminated sulfides
Notes on Vent Field Description: 
vein and disseminated sulfide and Fe oxides in exposed fault block; Ridge-transform intersection; Drolia and DeMets (2005) "active megamullion at the inner northeastern corner of the Vityaz transform fault .... The first described for the northern Central Indian ridge, the Vityaz megamullion is an inner corner, elongated domal high with well-expressed ridge-perpendicular corrugations", "The megamullion rises from the 4700-m-deep rift axis to a depth of 2300 m over a distance of only 9 km"; note: Rona et al. (2005) abstract suggests this may be considered southernmost Carlsberg Ridge, "Mn-oxide coatings on basalts in the axial valley with Fe/Mn ratios at the boundary between hydrogenous and hydrothermal composition with thickness at two stations (1.67S, 67.77E; 5.35S, 68.62E) suggestive of hydrothermal input; and a d3He anomaly (166 per mil) in the water column at one of our stations in April 1979 (5.35S, 68.62E)."
Notes Relevant to Biology: 
NotProvided
Year and How Discovered (if active, visual confirmation is listed first): 
1979 plume and deposits only
Discovery References (text): 
[Rozanova & Baturin (1971), Baturin & Rozanova (1975), Rona et al. (1981)]
Other References (text): 
Drolia and DeMets (2005) Deformation in the diffuse India-Capricorn-Somalia triple junction from a multibeam and magnetic survey of the northern Central Indian ridge, 3 S–10 S. G-cubed, 6(9), Q09009, doi:10.1029/2005GC000950
Rona et al. (2005) Carslberg Ridge and Mid-Atlantic Ridge: Slow-spreading Apparent Analogs. American Geophysical Union, Fall Meeting 2005, abstract #OS33A-1455.