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Logatchev-1
Name Alias(es):
Logatchev 1
14 45 site
Logachev
Logatchev
Логачев 1
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Anna-Louise
Anya's Garden
Candelabra
Irina I
Irina II
Quest
Main Mound
Site "A"
Site "B"
Site "F"
Activity:
Maximum Temperature:
370
Latitude:
14.7520
Longitude:
-44.9785
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
3050
Minimum Depth (mbsl):
2925
Tectonic setting:
Full Spreading Rate (mm/a):
25.5
Host Rock:
MORB, serpentinite, gabbro
Deposit Type:
NotProvided
Notes on Vent Field Description:
first vent discovery where the host rock was ultramafic (i.e., of mantle rather than crustal origin); 8 km off axis to east, at rift valley wall; all known hydrothermal structures align roughly 520m distance in NW-SE between smoking crater "Quest" and the chimney at Site "A"; map for locations of individual vents at Logatchev in Borowski et al. (2008); deposits dated to 58.6 ka (Cherkashov et al. 2008)
Notes Relevant to Biology:
mussel Bathymodiolus, shrimp Rimicaris, Bythograeidae, gastropod Phymorhynchus; Anya's Garden was the only location on the MAR with vesicomyid clams (but not observed in 2004, 2005, or 2007); list of fauna in Gebruk et al. (1997); also see Andrey Gebruk's abstract 4th CBE Symposium (2009)
Year and How Discovered (if active, visual confirmation is listed first):
1993-1994 TV grab and towed photo system; 1995 submersible Mir followed by submersible Nautile
Discovery References (text):
B.N. Batuyev et al., (1994) Massive sulfide deposits discovered at 14°45′N, Mid-Atlantic Ridge, BRIDGE Newsletter 6 (1994), pp. 6–10
Krasnov et al., Detailed geographical studies of hydrothermal fields in the North Atlantic. Geol. Soc. London Spec. Pub. 87, Hydrothermal vents and processes, 43-64, 1995
AV Gebruk et al. (1997) Hydrothermal vent fauna of the Logatchev area (14 45’N, MAR): preliminary results from the first Mir and Nautile dives in 1995. InterRidge News Vol. 6(2), p. 10-14.
Other References (text):
(plume only) Klinkhammer et al. (1985) Hydrothermal manganese plumes in the Mid-Atlantic Ridge rift valley. Nature 314: 727-731
Schmidt, K et al (2007) Geochemistry of hydrothermal fluids from the ultramafic-hosted Logatchev hydrothermal field, 15°N on the Mid-Atlantic Ridge: Temporal and spatial investigation. Chem Geol 242(1-2): 1-21
Borowski et al. (2008) New coordinates for the hydrothermal structures in the Logatchev vent field at 14°45’N on the Mid-Atlantic Ridge: Supplement to article in InterRidge News, Vol. 16. InterRidge News 17: 20
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
Andrey Gebruk's abstract 4th CBE Symposium (2009) "Community dynamics over a decadal scale at Logatchev, 14 45'N, Mid-Atlantic Ridge".
RDF link: