You are here

Semyenov

Name Alias(es): 
13 30'N OCC, MAR
Semyonov
Semenov
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Site 2
Maximum Temperature: 
Max Temperature Category: 
Latitude: 
13.5137
Longitude: 
-44.9630
Location on map: 
Ocean: 
Region: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
2440
Minimum Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
26.0
Volcano Number (if applicable): 
Host Rock: 
basalt-hosted
Deposit Type: 
PMS
Notes on Vent Field Description: 
site 2 active; sites 1,3,4,5 inactive; located in area with active detachment faulting; white smokers and vent-associated fauna, but no plume detected in hydrocasts (Beltenev et al. 2009); site 2 is basalt-hosted; site 4: "preliminary estimated resources at least twice larger than those at the Krasnov hydrothermal field - the largest for the moment sulfide deposit at the MAR" Cherkashov et al. (2008)
Notes Relevant to Biology: 
Beltenev et al. (2009): "The composition of species in the sample at St. 275 is typical of fauna associated with mussel beds at hydrothermal fields on the northern MAR. Of special interest is the record of the shrimp O. susannae (six specimens in the sample)."
Year and How Discovered (if active, visual confirmation is listed first): 
2009 TV grab and photo-TV profiling; 2007 deposits only
Discovery References (text): 
(deposits only) Beltenev et al. (2007) A NEW HYDROTHERMAL FIELD AT 13 30’N ON THE MID-ATLANTIC RIDGE. InterRidge News 16: 9-10
(deposits only) 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
Beltenev et al. (2009) New data about hydrothermal fields on the Mid-Atlantic Ridge between 11- 14 N: 32nd Cruise R/V Professor Logatchev. InterRidge News 18: 13-17.
Other References (text): 
SEARLE ET AL. (2007) AGU FALL MEETING "Development of Oceanic Core Complexes on the Mid-Atlantic Ridge at 13-14N: Deep-Towed Geophysical Measurements and Detailed Seafloor Sampling"
MacLeod et al. (2009) Life cycle of oceanic core complexes. Earth and Planetary Science Letters 287: 333-344.