Organizing melt flow through the crust
Melt that crystallizes as granite at shallow crustal levels in orogenic belts originates from migmatite and residual granulite in the deep crust; this is the most important mass-transfer process affecting the continents. Initially melt collects in grain boundaries before migrating along structural f...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Mineralogical Society of America and several other scientific societies
2011
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/47594 |
| _version_ | 1848757876217085952 |
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| author | Brown, M. Korhonen, Fawna Siddoway, C. |
| author_facet | Brown, M. Korhonen, Fawna Siddoway, C. |
| author_sort | Brown, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Melt that crystallizes as granite at shallow crustal levels in orogenic belts originates from migmatite and residual granulite in the deep crust; this is the most important mass-transfer process affecting the continents. Initially melt collects in grain boundaries before migrating along structural fabrics and through discordant fractures initiated during synanatectic deformation. As this permeable porosity develops, melt flows down gradients in pressure generated by the imposed tectonic stress, moving from grain boundaries through outcrop-scale vein networks to ascent conduits. Gravity then drives melt ascent through the crust, either in dikes that fill ductile-to-brittle-elastic fractures or by pervasive flow in planar and linear channels in belts of steep structural fabrics. Melt may be arrested in its ascent at the ductile-to-brittle transition zone or it may be trapped en route by a developing tectonic structure. |
| first_indexed | 2025-11-14T09:35:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-47594 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:35:03Z |
| publishDate | 2011 |
| publisher | Mineralogical Society of America and several other scientific societies |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-475942018-03-29T09:07:10Z Organizing melt flow through the crust Brown, M. Korhonen, Fawna Siddoway, C. migmatite dike granulite ductile fracturing melt flow granite Melt that crystallizes as granite at shallow crustal levels in orogenic belts originates from migmatite and residual granulite in the deep crust; this is the most important mass-transfer process affecting the continents. Initially melt collects in grain boundaries before migrating along structural fabrics and through discordant fractures initiated during synanatectic deformation. As this permeable porosity develops, melt flows down gradients in pressure generated by the imposed tectonic stress, moving from grain boundaries through outcrop-scale vein networks to ascent conduits. Gravity then drives melt ascent through the crust, either in dikes that fill ductile-to-brittle-elastic fractures or by pervasive flow in planar and linear channels in belts of steep structural fabrics. Melt may be arrested in its ascent at the ductile-to-brittle transition zone or it may be trapped en route by a developing tectonic structure. 2011 Journal Article http://hdl.handle.net/20.500.11937/47594 10.2113/gselements.7.4.261 Mineralogical Society of America and several other scientific societies restricted |
| spellingShingle | migmatite dike granulite ductile fracturing melt flow granite Brown, M. Korhonen, Fawna Siddoway, C. Organizing melt flow through the crust |
| title | Organizing melt flow through the crust |
| title_full | Organizing melt flow through the crust |
| title_fullStr | Organizing melt flow through the crust |
| title_full_unstemmed | Organizing melt flow through the crust |
| title_short | Organizing melt flow through the crust |
| title_sort | organizing melt flow through the crust |
| topic | migmatite dike granulite ductile fracturing melt flow granite |
| url | http://hdl.handle.net/20.500.11937/47594 |