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A practical suggestion regarding the use of Scandinavian and Russian palaeomagnetic data to determine the palaeo-position of Baltica in Ordovician time

Authors
Journal
Tectonophysics
0040-1951
Publisher
Elsevier
Publication Date
Volume
201
Identifiers
DOI: 10.1016/0040-1951(92)90175-6
Disciplines
  • Earth Science

Abstract

Abstract There is a discrepancy between Ordovician palaeomagnetic pole positions from the Russian Plate and from Scandinavia; however, it is clear from faunal and tectonic evidence that the two regions were parts of a single continent through Palaeozoic time. Data from both regions are few in number and some are controversial in nature. Therefore it is suggested that the palaeomagnetic discrepancy merely reflects the incomplete nature of the palaeomagnetic dataset for Baltica. It is notable that palaeolatitudes for Baltica derived from the Scandinavian dataset are confirmed by other lines of geological evidence. It is therefore concluded that the Scandinavian dataset offers the most reliable palaeomagnetic controls on the Lower Palaeozoic drift history of Baltica, placing it in mid-southerly latitudes in Early Ordovician time, rotated clockwise through at least 50° relative to its present orientation.

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