Computer Science
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..47....1b&link_type=abstract
Earth and Planetary Science Letters, Volume 47, Issue 1, p. 1-10.
Computer Science
33
Scientific paper
Experiments in a piston-cylinder apparatus have been carried out at 700-1050°C, 10-16 kbar to determine the stability of ferrosilite (FeSiO3) relative to fayalite + quartz. Reaction reversals within 0.1-kbar intervals locate the equilibrium at 10.5, 11.0, 11.5, 12.0, 12.6, 13.3, 14.1 and 14.8 kbar at 700, 750, 800, 850, 900, 950, 1000, and 1050°C, respectively, reflecting the intercept with the α-β quartz transition at about 880°C. The tight reversals severely constrain the reaction slope, providing a basis for limited extrapolation and calculations. However, the lack of accurate activity and cation-distribution data for orthopyroxene and olivine generates substantial uncertainties when considering the effects of large proportions of additional components such as MgO. Experiments and calculations indicate that additional components dramatically extend the pyroxene stability field and that pressures that have been inferred from ferrosilite-rich pyroxenes in natural assemblages are 1-3 kbar too high.
Boettcher Arthur L.
Bohlen Steven R.
Essene Eric J.
No associations
LandOfFree
Reinvestigation and application of olivine-quartz-orthopyroxene barometry 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 Reinvestigation and application of olivine-quartz-orthopyroxene barometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reinvestigation and application of olivine-quartz-orthopyroxene barometry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1571607