Andersen, T., Austrheim, H., Burke, E. A. J. (1990) Fluid inclusions in granulites and eclogites from the Bergen Arcs, Caledonides of W. Norway. Mineralogical Magazine, 54 (375) 145-158 doi:10.1180/minmag.1990.054.375.02
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Fluid inclusions in granulites and eclogites from the Bergen Arcs, Caledonides of W. Norway | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Andersen, T. | Author | |
| Austrheim, H. | Author | ||
| Burke, E. A. J. | Author | ||
| Year | 1990 (June) | Volume | 54 |
| Issue | 375 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_54/54-375-145.pdf+ | ||
| DOI | doi:10.1180/minmag.1990.054.375.02Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 1604 | Long-form Identifier | mindat:1:5:1604:3 |
| GUID | 0 | ||
| Full Reference | Andersen, T., Austrheim, H., Burke, E. A. J. (1990) Fluid inclusions in granulites and eclogites from the Bergen Arcs, Caledonides of W. Norway. Mineralogical Magazine, 54 (375) 145-158 doi:10.1180/minmag.1990.054.375.02 | ||
| Plain Text | Andersen, T., Austrheim, H., Burke, E. A. J. (1990) Fluid inclusions in granulites and eclogites from the Bergen Arcs, Caledonides of W. Norway. Mineralogical Magazine, 54 (375) 145-158 doi:10.1180/minmag.1990.054.375.02 | ||
| In | (1990, June) Mineralogical Magazine Vol. 54 (375) Mineralogical Society | ||
| Abstract/Notes | AbstractThe Grenvillian granulite-facies complex on Holsnøy island, Bergen Arcs, W. Norway, has been metamorphosed at eclogite-facies conditions during the Caledonian orogeny (ca. 425 Ma). The granulite-eclogite facies transition takes place along shear zones and fluid pathways. Mineral thermobarometry indicates PT conditions of 800–900°C and 8–10 kbar for the Proterozoic granulite facies metamorphism and 700–800°C and 16–19 kbar for the eclogite-forming event. Quartz in the granulite facies complex contains CO2 fluid inclusions with less than 2.5 mole percent N2; the molar volumes are compatible with the PT conditions of the Proterozoic granulite metamorphism. Quartz in pegmatitic quartz + omphacite and quartz + phengite/paragonite veins coeval with shear-zone eclogites contain N2 ± CO2 fluid inclusions. Combined laser Raman microanalysis and microthermometry show that the least disturbed inclusions have XCO2 = 0.1–0.3, and molar volumes less than 40 cm3/mole, which may agree with the PT conditions during Caledonian high-pressure metamorphism. Younger, low-density N2 and N2-H2O fluid inclusions are the results of decrepitation and redistribution of early inclusions during the retrograde PT evolution of the eclogites. | ||
See Also
These are possibly similar items as determined by title/reference text matching only.
