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Punta Mita, Bahia de Banderas
Name Alias(es):
Vent Sites:
Fisura de Las Coronas
Vent A
Activity:
Maximum Temperature:
85
Latitude:
20.7700
Longitude:
-105.5200
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
10
Minimum Depth (mbsl):
Tectonic setting:
Full Spreading Rate (mm/a):
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
Hydrothermal fluids are discharged at a temperature of 85 C. Preliminary data on the structures, pH, and seismic activity in the study zone were reported by Núñez-Cornú et al. (2000); not related to active volcanism; "continental margins actively affected by extension tectonic processes" (Canet and Prol-Ledesma 2007)
Notes Relevant to Biology:
characterized by the presence of algal-mats that cover small mounds (up to 2.5 m in diameter and 0.75 m in height) around the submarine hot springs
Year and How Discovered (if active, visual confirmation is listed first):
1997 photo/video most likely by SCUBA
Discovery References (text):
Núñez-Cornú et al. (2000) Near shore submarine hydrothermal activity in Bahia Banderas, western Mexico. Geofisica Internacional 39: 171-178
Prol-Ledesma, R. et al. (2000) Mineralogy of a shallow hydrothermal submarine center near Punta Mita (western Mexico). Proceedings World Geothermal Congress 2000, Kyushu-Tohoku, Japan: 1599-1604.
Other References (text):
Alfonso, P. et al. (2005) Isotopic evidence for biogenic precipitation as a principal mineralization process in coastal gasohydrothermal vents, Punta Mita, Mexico. Chemical Geology 224: 113-121
Canet and Prol-Ledesma (2007) Mineralizing processes at shallow submarine hydrothermal vents: Examples from México. Geological Society of America Special Paper 422: 359–376, doi: 10.1130/2007.2422(13).
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