Physics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pepi..164..186s&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 164, Issue 3-4, p. 186-196.
Physics
4
Scientific paper
The kinetics of static grain growth in a pure synthetic orthopyroxene and orthopyroxene of natural composition were investigated to determine the effects of solute segregation on grain growth. In all experiments the grain size of the synthetic orthopyroxene increases considerably; in contrast, the natural orthopyroxene shows no perceptible grain growth at the same conditions. High-resolution X-ray compositional mapping confirms that the natural orthopyroxene has large concentrations of aluminum and calcium cations segregated on and near its grain boundaries. This segregation is believed to be responsible for the slow grain-growth kinetics in the natural orthopyroxene. Slow grain growth may permit long-term deformation in the diffusion creep regime, as has been observed in some deep mantle xenoliths. As such, it may provide a means of weakening the lithosphere.
Karato Shun-Ichiro
Skemer Philip
No associations
LandOfFree
Effects of solute segregation on the grain-growth kinetics of orthopyroxene with implications for the deformation of the upper 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 Effects of solute segregation on the grain-growth kinetics of orthopyroxene with implications for the deformation of the upper mantle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of solute segregation on the grain-growth kinetics of orthopyroxene with implications for the deformation of the upper mantle will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1878382