ISOTHERMAL CONSTITUTIVE UNDERCOOLING AS A MODEL FOR OSCILLATORY ZONING IN PLAGIOCLASE

Authors
LHEUREUX I FOWLER AD
Citation
I. Lheureux et Ad. Fowler, ISOTHERMAL CONSTITUTIVE UNDERCOOLING AS A MODEL FOR OSCILLATORY ZONING IN PLAGIOCLASE, Canadian Mineralogist, 34, 1996, pp. 1137-1147
Citations number
22
Categorie Soggetti
Mineralogy
Journal title
Canadian Mineralogist → ACNP
ISSN journal
00084476
Volume
34
Year of publication
1996
Part
6
Pages
1137 - 1147
Database
ISI
SICI code
0008-4476(1996)34:<1137:ICUAAM>2.0.ZU;2-E
Abstract
We present a recently developed nonlinear model based on the constitut ive undercooling mechanism to explain oscillatory zoning in plagioclas e. It uses diffusion-controlled growth kinetics coupled with a nonline ar partition relation. Regular oscillatory zoning, period doubling seq uence and chaotic zoning are possible for realistic choices of paramet ers. This model captures the essential features observed in actual cry stals.