扩散方程的岩浆动力学意义
马昌前
摘要(Abstract):
岩浆系统的扩散作用,是岩浆动力学的重要研究内容之一。本文在分析了硅酸盐系统扩散速率的影响因素基础上,讨论了扩散第二方程的6个解的应用:包括两岩浆体之间或岩浆和围岩之间组分扩散引起的成分变异和平衡时间;晶体及捕虏体对岩浆成分的影响;矿物在岩浆中的熔解时间;源区熔融残晶与部分熔融体之间的平衡时间;斑晶与熔体间的平衡时间,扩散控制的橄榄石环带的成因以及橄榄石捕虏晶在玄武质岩浆中的停留时间等问题。
关键词(KeyWords):
基金项目(Foundation):
作者(Author): 马昌前
参考文献(References):
- 〔1〕Maalφe, S., Principles of Igneous Petrology, Springer-Verlag, 1985, pp. 230-288
- 〔2〕Freer, R., Diffusion in silicate minerals and glasses: a data digest and guide to the literature, Contrib. Mineral. Petrol., 1981 Vol. 76, pp.440~454
- 〔3〕Watson, E.B., Diffusion in magmas at depth in the earth: the effect of pressure and dissolved H_2O, Earth Planet. Sci. Lett., 1981, Vol. 52, pp.291~301
- 〔4〕Hofmann, A.W., Diffusion in natural silicate melts: a critical review, R.B. Hargraves(ed.),Physics of Magmatic Processes, Princeton Uni. Press, N.J., 1980, pp. 385~417
- 〔5〕Rapp. R.P.& Watson. E.B., Monazite solubility and dissolution kinetics: implications for the thorium and light rare earth chemistry of felsic magmas Contrib. Mineral. Petrol., 1986, Vol. 94, pp.304~316
- 〔6〕Lowry. R.K.Henderson. P.& Nolan, J.,Tracer diffusion of some alkali,alkaline-earth and transition element ions in a basaltic and an andesitic melt, and the implications concerning melt structure, Contrib. Mineral.Pelrol., 1982, Vol. 80, pp.254~261
- 〔7〕Jambon. A., Tracer diffusion in granitic melts: Experimental results for Na, K, Rb, Cs, Ca, Sr, Be, Ce, Eu to 1300℃ and a model of calculation, J. Geophys. Res., 1982, Vol. 87 pp. 10797~10810
- 〔8〕Harrison, T.M.& Watson, E.B., Kinetics of zircon dissolution and zirconium diffusion in granitic melts of variable water content, Contrib. Mineral. Petrol., 1983, Vol.84, pp.66~72
- 〔9〕Harrison, T.M.&Watson, E.B., The behavior of apatite during crustal anatexis: Equilibrium and kinetic considerations, Geochim, Cosmochim.Acta, 1984, Vol. 48, pp.1467~1477
- 〔10〕Maalφe, S.& Hansen, B., Olivine phenocrysts of Hawaiian olivine tholeiite and Oceanite, area Contrib. Mineral. Petrol., 1982, Vol. 81, pp. 203~211
- 〔11〕Nabelek, P,I.& Langmair, C.H., The significance of unusual zoning in olivines from FAMOUS basalt 527-1-1, Contrib. Mineral. Petrol., 1986, Vol. 93, pp 1~8
- 〔12〕Potter, M.C., Mathematical Methods in the Physical Sciences, Prentice-Hall, Inc.1978, p. 432