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Character and origin of variably deformed granitoids in central southern Sweden: implications from geochemistry and Nd isotopes
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Solid Earth Geology.
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2011 (English)In: Geological Journal, ISSN 0072-1050, E-ISSN 1099-1034, Vol. 46, no 6, p. 597-618Article in journal (Refereed) Published
Abstract [en]

We present major and trace element data for eighteen 1.71–1.66 Ga granitoid samples, and Sm–Nd whole‐rock isotope data for eleven ofthese samples, in a transect across the border between the Transscandinavian Igneous Belt (TIB) and the Eastern Segment in central southernSweden. The geochemistry of the granitoids varies from alkalic to alkali‐calcic and peraluminous in the east to predominantly calc‐alkalineand metaluminous in the west. Rocks in the west also have lower SiO2 contents. Trace element signatures favour formation in an activecontinental margin setting. Nd isotope data are completely overlapping along the transect and initial εNd values are mildly depleted in therange +0.3 to +2.6. The combined data suggest that the magmas were derived mainly from juvenile, pre‐existing crust, increasingly mafic andless alkaline towards the west.

Place, publisher, year, edition, pages
2011. Vol. 46, no 6, p. 597-618
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Earth and Related Environmental Sciences
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URN: urn:nbn:se:uu:diva-153806DOI: 10.1002/gj.1303ISI: 000297054200006OAI: oai:DiVA.org:uu-153806DiVA, id: diva2:417965
Available from: 2011-05-19 Created: 2011-05-19 Last updated: 2017-12-11Bibliographically approved

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