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Mariana Mounds

Name Alias(es): 
Marianas Mounds
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Maximum Temperature: 
Max Temperature Category: 
Location on map: 
Maximum or Single Reported Depth (mbsl): 
Minimum Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
Volcano Number (if applicable): 
Host Rock: 
Deposit Type: 
NFS, Fe & Mn crusts and mounds
Notes on Vent Field Description: 
off-axis hydrothermal mounds; mound-like deposits of Fe & Mn oxides; Tovey and Dadey (2002): "Activity is concentrated on a 1 km× 0.5 km ×50 m high topographic high located on 3 million year crust west of the active spreading centre"; Wheat and McDuff (1995): "Extensive observations from DSRV Alvin establish that warm fluids (about 12.5 C) upflow through sediments in the Mariana Mounds area."
Notes Relevant to Biology: 
Year and How Discovered (if active, visual confirmation is listed first): 
1987 submersible Alvin
Discovery References (text): 
[Leinen et al. (1987) Off-axis hydrothermal activity in the Mariana Mounds field, EOS, Transactions of the American Geophysical Union 68 (1987), p. 1531].
Other References (text): 
Wheat and McDuff (1995) Mapping the fluid flow of the Mariana Mounds ridge flank hydrothermal system: Pore water chemical tracers. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 100, NO. B5, PAGES 8115-8131
Tovey and Dadey (2002) Quantitative orientation and micro-porosity analysis of recent marine sediment microfabric. Quaternary International 92: 89-100 .