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Mount Jourdanne
Name Alias(es):
Mt. Jourdanne
Vent Sites:
Activity:
Maximum Temperature:
Max Temperature Category:
Latitude:
-27.8500
Longitude:
63.9333
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2940
Minimum Depth (mbsl):
Tectonic setting:
Full Spreading Rate (mm/a):
9.6
Host Rock:
MORB, E-MORB, ultramafic
Deposit Type:
PMS
Notes on Vent Field Description:
Segment 11, SWIR; situated at top of an axial volcanic ridge; massive sulfides include chimneys, mounds, and clastic ores; first discovery of sulfide chimneys at ultraslow SWIR
Notes Relevant to Biology:
observed no "faunal relicts"
Year and How Discovered (if active, visual confirmation is listed first):
1998 submersible Shinkai 6500
Discovery References (text):
Fujimoto et al., InterRidge News 8(1), 22-24, 1999, First submersible investigations of mid-ocean ridges in the Indian Ocean
Muench, U., Lalou, C., Halbach, P., and Fujimoto, H. (2001) Relict hydrothermal events along the super-slow Southwest Indian spreading ridge near 63°56′E—mineralogy, chemistry and chronology of sulfide samples. Chemical Geology 177: 341-349.
Other References (text):
Muench, U. et al. (2000) Sea-floor hydrothermal mineralization from the Mt. Jourdanne, Southwest Indian Ridge. JAMSTEC J. Deep Sea Res. 16: 125-132
Nayak, B. and Halbach, P. (2005) Sequence of Hydrothermal Mineralization at Mount Jourdanne, Southwest Indian Ridge (SWIR), and its significance. Abstract S4-HP-20T, Workshop on Tectonic & Oceanic Processes along the Indian Ocean Ridge System, National Institute of Oceanography, India, 19 - 21 January 2005.
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