Abstract
Abstract The deformation history of the eastern part of the SW-Swedish gneiss belt has been investigated. Regional events more than c. 1700 Ma, are identified as D1–D2, more than c.1400 Ma as D3, less than c.1130 Ma as D4 and more than c.900 Ma as D5–D7. Thus the D4–D7 events are considered to be Sveconorwegian. A common deformation history is suggested for southwestern Sweden. Gradational changes in lithology from west to east are apparently associated with different tectonic styles and intensity of strain. The principle deformation of the ‘Protogine zone’ of central Sweden is suggested to be D4; the ‘Mylonite zone’ of western Sweden appears to have been initiated before D3. The Smaland-Varmland granitoid belt (c.1700 Ma) is geneally considered as ‘early Postorogenic’ in respect to the Svecokarelian orogeny. Because it has been influenced by the D3-event it represents a link between Svecokarelian rocks and the SW-Swedish gneisses.
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