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Configuration of Migmatite Dome Comparative Tectonics of Migmatite in the Hidaka Metamorphic Belt

Configuration of Migmatite Dome Comparative Tectonics of Migmatite in the Hidaka Metamorphic Belt
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Crystallization processes in migmatites

American Mineralogist, 2001
An important prerequisite for interpreting microstructures in plutonic and metamorphic rocks is understanding crystallization processes. This study uses crystal size distribution (CSD) and grain shape parameters to investigate mineral-reaction-controlled crystal growth and melt solidification in migmatites of the Bayerische Wald (Variscan Orogeny ...
Alfons Berger, Gregory Roselle
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Igneous microstructures in migmatites

Geology, 1988
Clear differences between the microstructures of leucosomes and mesosomes occur in some nebulitic migmatites in the Proterozoic Arunta block, central Australia. The leucosomes show crystal faces of K-feldspar (microcline-microperthite), cordierite, andalusite, and plagio clase against quartz, indicating crystallization of a melt.
R. H. Vernon, W. J. Collins
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Melt segregation in migmatites

Journal of Geophysical Research: Solid Earth, 1995
Anatectic stromatic migmatites have a symmetrical layered structure with a low ratio of thickness to length and a periodicity, features that have not been explained satisfactorily but which are related to physical processes of melt segregation. We evaluate the compaction model for segregation as it applies to migmatites and develop models for melt ...
Michael Brown, Yuri A. Averkin, Eileen L. McLellan, Edward W. Sawyer   +3 more
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Schlieren formation in diatexite migmatite: examples from the St Malo migmatite terrane, France

Journal of Metamorphic Geology, 2003
AbstractSchlieren are trains of platy or blocky minerals, typically the ferromagnesian minerals and accessory phases, that occur in granites and melt‐rich migmatites, such as diatexites. They have been considered as: (1) unmelted residue from xenoliths or the source region; (2) mineral accumulations formed during magma flow; (3) compositional layering;
I. Milord, E. W. Sawyer
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General Characteristics of Migmatites and Migmatite Terranes

1999
Structures and structural relationships resulting from superimposed deformation have long been recognized by geologists, and references to this perception can be found in the literature at least as far back as the late nineteenth century (Clough, The Geology of Cowal (Gunn et al, 1897, pp. 23, 24), and here, under ‘Fold (Structure) sets’, section 5.3),
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Fluid inclusions in migmatites

1985
The fluid inclusions provide petrologists with the only direct method for studying a possible metamorphic fluid from a high P-T environment. Basic principles of a fluid inclusion study are as old as modern petrography (Sorby, 1858), but only in recent years have advances in the technology (heating-freezing stages), and in the understanding of fluid ...
J. Touret, Sakiko N. Olsen
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Killarney Gneisses and Migmatites

Geological Society of America Bulletin, 1927
Introduction The Huronian sediments, which stretch almost unbroken from the western end of Lake Superior to a line between Killarney and Lake Temiskaming, end abruptly against an area of gneisses. This area of gneisses, previously thought to be of pre-Huronian age, is now known to be composed in part of rocks younger than the Huronian sediments and ...
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Deformational behaviour of migmatites and problems of structural analysis in migmatite terrains

Geological Magazine, 1984
AbstractAn understanding of the response of migmatites to deformation is crucial to an interpretation of their structures, and in anatectic and intrusive migmatite terrains due consideration must be given to the modification of deformation processes imposed by melts.
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The Migmatite Area Around Bettyhill, Sutherland

Quarterly Journal of the Geological Society of London, 1943
Summary The Migmatization of pelitic, semipelitic, siliceous and hornblendic (Durcha type) rocks of the Moine Series is a record of a lengthy series of metasomatic changes brought about by the activity of alkaline solutions. Pelitic gneisses are converted by soda-metasomatism into permeation-gneisses. Semipelitic granulites give rise to augen-
Yu-Chi Cheng, H. H. Read
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