| Инд. авторы: | Korolyuk V.N., Lepezin G.G. |
| Заглавие: | The coefficients of heterovalent NaSi-CaAl interdiffusion in plagioclases |
| Библ. ссылка: | Korolyuk V.N., Lepezin G.G. The coefficients of heterovalent NaSi-CaAl interdiffusion in plagioclases // Russian Geology and Geophysics. - 2009. - Vol.50. - Iss. 12. - P.1146-1152. - ISSN 1068-7971. - EISSN 1878-030X. |
| Внешние системы: | DOI: 10.1016/j.rgg.2009.11.013; SCOPUS: 2-s2.0-70449769071; |
| Реферат: | eng: 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):over(D, ̃) [frac(cm2, s)] = exp {13.14 - 0.354 NPl + frac(40.72, 1 + PH2 O 2) - frac(116095 - 1037 NPl + 139732 / (1 + PH2 O 2), RT)} . © 2009.
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| Ключевые слова: | plagioclase; thermal history of rocks; thermal structure; temperature effect; sodium; silicon; pressure effect; plagioclase; diffusion; chemical composition; calcium; aluminum; albite; diffusion coefficient; activation energy; |
| Издано: | 2009 |
| Физ. характеристика: | с.1146-1152 |