Seismic Evidence for Partial Melt at the Base of Earth's Mantle

Details Seismic Evidence for Partial Melt at the Base of Earth's Mantle Seismic Evidence for Partial Melt at the Base of Earth's Mantle

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sci...273.1528w&link_type=abstract

Science, Volume 273, Issue 5281, pp. 1528-1530

Other

163

Scientific paper

The presence of an intermittent layer at the base of Earth's mantle with a maximum thickness near 40 kilometers and a compressional wave velocity depressed by ~10 percent compared with that of the overlying mantle is most simply explained as the result of partial melt at this depth. Both the sharp upper boundary of this layer (<10 kilometers wide) and the apparent correlation with deep mantle upwelling are consistent with the presence of liquid in the lowermost mantle, implying that the bottom of the thermal boundary layer at the base of the mantle may lie above its eutectic temperature. Such a partially molten zone would be expected to have enhanced thermal and chemical transport properties and may provide constraints on the geotherm and lateral variations in lowermost mantle temperature or mineralogy.

Affiliated with

Also associated with

No associations

Rating

Seismic Evidence for Partial Melt at the Base of Earth's Mantle 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 Seismic Evidence for Partial Melt at the Base of Earth's Mantle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic Evidence for Partial Melt at the Base of Earth's Mantle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-996289