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GEOREF RECORD

Temperature-pressure investigation of the southern part of the Southwest Swedish granulite region

Xiang-Dong Wang and Anders Lindh
Temperature-pressure investigation of the southern part of the Southwest Swedish granulite region
European Journal of Mineralogy (February 1996) 8 (1): 51-67

Abstract

Geothermometry on Fe (super 2+) -Mg exchange among coexisting garnet-clinopyroxene, garnet-orthopyroxene and garnet-hornblende indicates T for these mafic granulites and upper amphibolite facies rocks ( approximately 900 m.y.) to be in the range 700-800 degrees C and 680-750 degrees C, respectively. Estimates from Al solubility data from orthopyroxene coexisting with garnet suggest unreasonably high T. P was determined from coexisting garnet-clinopyroxene-plagioclase-quartz, garnet-orthopyroxene-plagioclase-quartz and garnet-hornblende-plagioclase-quartz parageneses; results are in the range 0.85-1.17 GPa for the granulites and 0.85-1.06 GPa for the amphibolites. A retrograde history is recorded by chemical zoning preserved as thin rims around the garnets and pyroxenes. A prograde P-T path is indicated by well-preserved coronitic textures, newly developed metamorphic pyroxenes and plagioclase in relict igneous textures, and the prograde zoning in garnet. Using the moderately Ca-rich garnets (X (sub gro) 0.17-0.29) and wide Fe-Mg range (X (sub py) 0.12-0.25), the application of different thermometers and barometers yields an apparent T and P variation up to approximately 135 degrees C and approximately 0.25 GPa.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 8
Serial Issue: 1
Title: Temperature-pressure investigation of the southern part of the Southwest Swedish granulite region
Affiliation: University of Lund, Institute of Geology, Lund, Sweden
Pages: 51-67
Published: 199602
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 42
Accession Number: 1996-024287
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables, geol. sketch map
N55°15'00" - N69°15'00", E11°00'00" - E24°15'00"
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199608
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