Paleomagnetic studies of rapakivi complexes in the Fennoscandian Shield : Implications for the origin of Proterozoic massif-type anorthosite magmatism

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dc.contributor.author Salminen, Johanna
dc.contributor.author Elming, Sten-Ake
dc.contributor.author Mertanen, Satu
dc.contributor.author Wang, Chong
dc.contributor.author Almqvist, Bjarne
dc.contributor.author Moakhar, Mohsen Oveisy
dc.date.accessioned 2021-10-28T10:45:03Z
dc.date.available 2021-10-28T10:45:03Z
dc.date.issued 2021-10
dc.identifier.citation Salminen , J , Elming , S-A , Mertanen , S , Wang , C , Almqvist , B & Moakhar , M O 2021 , ' Paleomagnetic studies of rapakivi complexes in the Fennoscandian Shield : Implications for the origin of Proterozoic massif-type anorthosite magmatism ' , Precambrian Research , vol. 365 , 106406 . https://doi.org/10.1016/j.precamres.2021.106406
dc.identifier.other PURE: 169853564
dc.identifier.other PURE UUID: 2eb1d171-fe7d-4dbd-9655-1595915211ec
dc.identifier.other WOS: 000703586700018
dc.identifier.other ORCID: /0000-0001-5347-1920/work/104209865
dc.identifier.uri http://hdl.handle.net/10138/335786
dc.description.abstract Paleomagnetic studies have been performed on five rapakivi related complexes in Sweden and Finland. Poles of varying quality have been defined and the majority of the similar to 1640-1497 Ma poles are clustering on low latitudinal positions. By combining data from similar to 1500 Ma intrusions a new high-quality pole (Plat: 13 degrees N; Plon: 190 degrees E; A(95): 11 degrees, K: 14) for Baltica has been defined. Tectonic reconstructions, on the basis of the new data and previously published high-quality data, indicate that Baltica experienced stable low latitude to equatorial positions during 1640-1470 Ma, temporally coinciding with globally pronounced rapakivi-anorthosite magmatism. Our study argues against single hotspot source for similar to 1640-1620 Ma, similar to 1590-1520 Ma, and 1470-1410 Ma rapakivianorthosites, but supports a model of large-scale superswell under a stationary low-latitude position of supercontinent Nuna for the origin of rapakivi-anorthosite magmatism. However, a possibility for convergent tectonism as the origin cannot be ruled out. en
dc.format.extent 30
dc.language.iso eng
dc.relation.ispartof Precambrian Research
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 1171 Geosciences
dc.title Paleomagnetic studies of rapakivi complexes in the Fennoscandian Shield : Implications for the origin of Proterozoic massif-type anorthosite magmatism en
dc.type Article
dc.contributor.organization Doctoral Programme in Geosciences
dc.contributor.organization Department of Geosciences and Geography
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1016/j.precamres.2021.106406
dc.relation.issn 0301-9268
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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