Chamorro Vent

Latitude: 20.799^οN                  Longitude: 144.706^οE             Depth: 825 m bsl

Chamorro seamount is an active submarine arc volcano (Baker et al., 2008; Resing et al., 2009) located in the Northern Seamount Province (Bloomer et al., 1989). No vent has been found but Resing et al. (2009, Table 4) report evidence of low levels of hydrothermal activity based on Light Scatter and Oxidation Reduction Potential (ORP) measurements using CTD rosette package. The plume is seen in elevated ³He, for discrete water samples collected above the volcano (Resing et al., 2009). Because the vent has not yet been found, there is no information about any biological community.

Table 1: Operations history for Chamorro vent

 Table 2: Vent activity and host rocks

Table 3: Vent fluid characteristics

* Δ³He – Measured above the background.

Table 4: Vent Biology:

Images:

• Snails were seen (note: search “Chamorro)
• Small hydrothermal vent chimneys
• Thermometer into a Chamorro chimney

Video Links:

• Chamorro vent discovery
• ROV Deep Discoverer images a newly discovered hydrothermal vent field at Chammoro Seamount

References:References:

1. Baker, E. T., Embley, R. W., Walker, S. L., Resing, J. A., Lupton, J. E., Nakamura, K., de Ronde, C. E. J., Massoth, G. J., 2008. Hydrothermal activity and volcano distribution along the Mariana arc: Journal of Geophysical Research 113 (B8), 1-16.
2. Bloomer, S. H., Stern, R. J., Fisk, E., Geschwind, C. H., 1989 b. Shoshonitic Volcanism in the Northern Mariana Arc. 1. Mineralogic and Major and Trace Element Characteristics. Journal of Geophysical Research 94 (B4), 4469-4496.
3. Resing, J. A., Baker, E. T., Lupton, J. E., Walker, S. L., Butterfield, D. A., Massoth, G. J., Nakamura, K., 2009. Chemistry of hydrothermal plumes above submarine volcanoes of the Mariana Arc. Geochemistry, Geophysics, Geosystems 10 (2), 1-23.

Website References:

1. Submarine Ring of Fire 2003 http://oceanexplorer.noaa.gov/explorations/03fire/logs/summary/marianas_cruisereport.pdf (accessed 01/19/2016)
2. Okeanos Explorer 2016 https://docs.lib.noaa.gov/OEDV/Okeanos_Explorer_2016_EX1605/Leg_3/doc/dive_summaries/EX1605L3_DIVE07_20160624_ROVDiveSummary_Final.pdf (accessed 2/22/2017)

Cruise Reports:

4. Submarine Ring of Fire 2003 http://oceanexplorer.noaa.gov/explorations/03fire/logs/summary/marianas_cruisereport.pdf (accessed 01/19/2016)
5. NOAA Okeanos Explorer 2016 https://docs.lib.noaa.gov/OEDV/Okeanos_Explorer_2016_EX1605/Leg_3/doc/dive_summaries/EX1605L3_DIVE07_20160624_ROVDiveSummary_Final.pdf (accessed 2/26/2017)