Physics
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gecoa..58.4739p&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 58, Issue 21, pp.4739-4750
Physics
12
Scientific paper
The effect of pressure on the equilibrium isotope fractionation is examined theoretically. The calculation technique is developed, using the quasi-harmonic approximation for solids. The formula connecting the pressure derivative of the -factor (reduced isotopic partition function ratio) and its temperature derivative is obtained. The application of the technique to some silicates (quartz, albite, enstatite, pyrope, grossular, forsterite), rutile and calcite ( 16 O- 18 O fractionation), graphite-calcite-diamond ( 12 C- 13 C fractionation) and brucite-water (H-D fractionation) shows that pressures of tens of kbars may produce a measurable effect on the equilibrium isotope fractionation and even change the sign of the isotopic shift. Estimation of the pressure effect is important for correct interpretation of high pressure experimental isotopic data and for correct calculation of equilibrium isotopic constants.
Kharlashina N. N.
Polyakov Veniamin B.
No associations
LandOfFree
Effect of pressure on equilibrium isotopic fractionation 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 Effect of pressure on equilibrium isotopic fractionation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of pressure on equilibrium isotopic fractionation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1023668