Convective crystal dissolution
Article Abstract:
The dissolution of crystals, in geological situations, via free and forced convections can be explained using fluid dynamics. For the crystals in magma chambers, the typical velocities for dissolving are lower than those for melting. This is due to large differences in thermal and compositional diffusivity of the magmas. Considerable crystal dissolution is possible in basaltic magma chambers, which can be contaminated by small felsic crystals formed by the melting and disintegration of xenoliths.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
A stable isotope study of retrograde alteration in SW Connemara, Ireland
Article Abstract:
Metamorphic and igneous rocks as well as granites from southwest Connemara, Ireland exhibit retrograde alterations. Such alterations involved plagioclase saussuritization and sericitization, chlorite generation from hornblende and biotite and secondary epidote formation. Sealed microcracks accompany these changes which are produced by the influx of fluids into rocks. Retrograde alterations were analyzed by measuring stable isotope composition coupled with fluid inclusion and mineralogical data.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
A fluid inclusion and stable isotope study of 200 Ma of fluid evolution in the Galway Granite, Connemara, Ireland
Article Abstract:
The Connemara region has seen several fluid-rock interaction events. The effects of physical conditions, composition, possible sources and timing of fluids on the Galway Granite, are characterized, so as to better understand the relationship of the fluid stages to the Granite. The study shows that the Galway Granite was a locus for repeated fluid events.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Implications from inclusions in topaz for greisenisation and mineralisation in the Hensbarrow topaz granite, Cornwall, England
- Abstracts: Convection and crystal settling in sills. Two-stage contamination during crustal assimilation: isotopic evidence from volcanic rocks in eastern Nevada
- Abstracts: Organic maturation, thermal history and hydrocarbon generation in the Orcadian Basin, Scotland. Evidence for an early Proterozoic crustal province in the North Atlantic region
- Abstracts: Crustal structure and the mechanical properties of extended continental lithosphere in the Valencia trough (western Mediterranian)
- Abstracts: Discussion on structural synthesis of south Staffordshire, UK: implications for the Variscan evolution of the Pennine Basin