On the formation of granulites
Journal of Metamorphic Geology
By: S.R. Bohlen
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Abstract
The tectonic settings for the formation and evolution of regional granulite terranes and the lowermost continental crust can be deduced from pressure-temperature-time (P-T-time) paths and constrained by petrological and geophysical considerations. P-T conditions deduced for regional granulites require transient, average geothermal gradients of greater than 35??C km-1, implying minimum heat flow in excess of 100 mW m-2. Such high heat flow is probably caused by magmatic heating. Tectonic settings wherein such conditions are found include convergent plate margins, continental rifts, hot spots and at the margins of large, deep-seated batholiths. Cooling paths can be constrained by solid-solid and devolatilization equilibria and geophysical modelling. -from Author
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | On the formation of granulites |
| Series title | Journal of Metamorphic Geology |
| Volume | 9 |
| Issue | 3 |
| Year Published | 1991 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Metamorphic Geology |
| First page | 223 |
| Last page | 229 |
| Google Analytic Metrics | Metrics page |