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Palaeomagnetism of Precambrian rocks in northern Sweden and its correlation to radiometric data
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
1994 (English)In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 69, no 1-4, p. 61-79Article in journal (Refereed) Published
Abstract [en]

A palaeomagnetic study has been performed on Palaeo- to Mesoproterozoic basic intrusions and volcanic rocks from the Fennoscandian shield in northern Sweden. Three, possibly four, different generations of magnetizations were identified, the oldest assigned to a Svecofennian age (1.86-1.89 Ga). A second generation is related to the intrusion of granitoids of 1.80-1.76 Ga. In this geological event probably also the third group of directions has its origin. These different magnetizations may indicate that there are at least two different generations of basic intrusions in northern Sweden. A fourth group of directions is isolated as overprints. This magnetization is interpreted to be a Subjotnian magnetization, reflecting a previously unrecognized regional Subjotnian metamorphic event in the northwestern part of the Fennoscandian shield. The drift history for the Fennoscandian shield during the period 1.88-1.50 Ga has been defined based on these new palaeomagnetic data

Place, publisher, year, edition, pages
1994. Vol. 69, no 1-4, p. 61-79
National Category
Geophysics
Research subject
Applied Geophysics
Identifiers
URN: urn:nbn:se:ltu:diva-7533DOI: 10.1016/0301-9268(94)90079-5ISI: A1994PN55900006Scopus ID: 2-s2.0-0028562380Local ID: 5ebfdab0-d477-11db-8550-000ea68e967bOAI: oai:DiVA.org:ltu-7533DiVA, id: diva2:980423
Note
Godkänd; 1994; 20070317 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Elming, Sten-åke

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