Hydrothermally-induced melt lens cooling and segmentation along the axis of fast- and intermediate-spreading centers

Details Hydrothermally-induced melt lens cooling and segmentation along the axis of fast- and intermediate-spreading centers Hydrothermally-induced melt lens cooling and segmentation along the axis of fast- and intermediate-spreading centers

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3814307f&link_type=abstract

Geophysical Research Letters, Volume 38, Issue 14, CiteID L14307

Statistics

Computation

Computational Geophysics: Modeling (1952, 4255, 4316), Geochemistry: Mid-Oceanic Ridge Processes (3614, 8416), Geochemistry: Magma Chamber Processes (3618), Oceanography: Biological And Chemical: Hydrothermal Systems (0450, 1034, 3017, 3616, 8135, 8424), Tectonophysics: Heat Generation And Transport

Scientific paper

The heat output and thermal regime of fast and intermediate spreading centers are strongly controlled by boundary layer processes between the hydrothermal system and the underlying crustal magma chamber (AMC), which remain to be fully understood. Here, we model the interactions between a shallow two-dimensional cellular hydrothermal system at temperatures <700°C, and a deeper AMC at temperatures up to 1200°C. We show that hydrothermal cooling can freeze the AMC in years to decades, unless melt injections occur on commensurate timescales. Moreover, the differential cooling between upflow and downflow zones can segment the AMC into mush and melt regions that alternate on sub-kilometric length scales. These predictions are consistent with along-axis variations in AMC roof depth observed in ophiolites and oceanic settings. In this respect, fine-scale geophysical investigations of the structure of AMCs may help constrain hydrothermal recharge locations associated with active hydrothermal sites.

Affiliated with

Also associated with

No associations

Rating

Hydrothermally-induced melt lens cooling and segmentation along the axis of fast- and intermediate-spreading centers 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 Hydrothermally-induced melt lens cooling and segmentation along the axis of fast- and intermediate-spreading centers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrothermally-induced melt lens cooling and segmentation along the axis of fast- and intermediate-spreading centers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-994517