| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4739452 | Russian Geology and Geophysics | 2009 | 7 Pages |
Abstract
Literature data on the coefficients of heterovalent NaSi-CaAl interdiffusion in plagioclases are analyzed. It is shown that activation energy and frequency factor decrease as the partial pressure of water and plagioclase basicity increase. A general expression has been derived for the interdiffusion coefficients of albite and anorthite components as a function of the plagioclase composition (NPl), temperature T (K), and water pressure PH2O (kbar):DË[cm2s]=exp{13.14â0.354NPl+40.721+PH2O2â116095â1037NPl+139732/(1+PH2O2)RT}.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
V.N. Korolyuk, G.G. Lepezin,