Abundant hydrothermal venting along melt-rich and melt-free ridge segments in the Lau back-arc basin

Details Abundant hydrothermal venting along melt-rich and melt-free ridge segments in the Lau back-arc basin Abundant hydrothermal venting along melt-rich and melt-free ridge segments in the Lau back-arc basin

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3307308b&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 7, CiteID L07308

Physics

Geophysics

9

Marine Geology And Geophysics: Back-Arc Basin Processes, Marine Geology And Geophysics: Hydrothermal Systems (0450, 1034, 3616, 4832, 8135, 8424), Marine Geology And Geophysics: Midocean Ridge Processes, Volcanology: Hydrothermal Systems (0450, 1034, 3017, 3616, 4832, 8135)

Scientific paper

The relationship between the spatial density of hydrothermal venting (ph) and spreading rate (us) is undefined along back-arc ridges. Here we report a continuous survey of hydrothermal plumes along the ~400-km-long Eastern Lau Spreading Center. The mean ph/us ratio for each of three tectonic segments followed the global midocean ridge trend, with ph doubling as us increased northward from 39 to 96 mm/yr. However, we found little correlation between ph and the previously imaged distribution of axial melt lenses, which are near-continuous along the southern two segments but wholly absent along the northernmost segment. We infer that venting on the southern segments is melt driven, whereas venting on the northern ELSC is entirely powered with heat extracted by deep circulation through hot rock. This segment may be a rare example of an entire fast-spreading segment where hydrothermal convection cells are powered by downward-migrating cracking fronts.

Affiliated with

Also associated with

No associations

Rating

Abundant hydrothermal venting along melt-rich and melt-free ridge segments in the Lau back-arc basin does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Abundant hydrothermal venting along melt-rich and melt-free ridge segments in the Lau back-arc basin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abundant hydrothermal venting along melt-rich and melt-free ridge segments in the Lau back-arc basin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1498335