Cambrian palaeomagnetic data from Baltica: implications for true polar wander and Cambrian palaeogeography

  title={Cambrian palaeomagnetic data from Baltica: implications for true polar wander and Cambrian palaeogeography},
  author={Trond H. Torsvik and Emma F. Rehnstr{\"o}m},
  journal={Journal of the Geological Society},
  pages={321 - 329}
A reliable Early Cambrian (c. 535 Ma) and a preliminary Late Cambrian (c. 500 Ma) palaeomagnetic pole from Baltica (Sweden) overlap within uncertainty, and they are also broadly compatible with Vendian (c. 583 Ma) palaeomagnetic data. Apparent polar wander for Baltica amounts to less than 25° between 583 and 500 Ma and, therefore, negates recent speculations that the Earth tipped 90° during the Early Cambrian (true polar wander). Throughout Vendian and Cambrian times, Baltica lay at southerly… Expand

Figures and Tables from this paper

Circum-Iapetus paleogeography of the Precambrian-Cambrian transition with a new paleomagnetic constraint from Laurentia
Abstract The paleogeography of the Precambrian–Cambrian transition is still poorly known, but is fundamental for understanding Late Neoproterozoic climate extremes and the spatial associations of theExpand
A review of the Late Cambrian (Furongian) palaeogeography in the western Mediterranean region, NW Gondwana
Abstract The Cambrian–Ordovician transition of the western Mediterranean region (NW Gondwana) is characterized by the record of major erosive unconformities with gaps that range from aExpand
Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland
In the supercontinent of Rodinia, Baltica occurred next to Amazonia, then the two drifted away when Rodinia broke up. By the end of the Neoproterozoic, Baltica became an independent continent. AtExpand
Ediacaran–Cambrian paleogeography of Baltica: A paleomagnetic view from a diamond pit on the White Sea east coast
The controversial late Ediacaran to Cambrian paleogeography is largely due to the paucity and low reliability of available paleomagnetic poles. Baltica is a prime example of these issues. PreviouslyExpand
New Late Vendian palaeogeography of Baltica and the TESZ
New palaeomagnetic poles obtained from the Vendian tuffs and basalts of western Ukraine indicate the necessity of a substantial revision of the Late Vendian-Early Cambrian palaeogeography of theExpand
Late Neoproterozoic and Early Cambrian palaeogeography: models and problems
Abstract We present two alternative sets of global palaeogeographical reconstructions for the time interval 615–530 Ma using competing high and low-latitude palaeomagnetic data subsets for LaurentiaExpand
Late Neoproterozoic to Early Palaeozoic palaoegeography of the Holy Cross Mountains (Central Europe): an integrated approach
Study of geochemistry, examination of isotope ages of detrital minerals, palaeomagnetic analysis, and a study of the trilobites were performed to provide constraints on the palaeogeographicalExpand
A palaeomagnetic and palaeobiogeographical perspective on latest Neoproterozoic and early Cambrian tectonic events
During the latest Neoproterozoic to Mid-Cambrian time (580–505 Ma ago), the Earth underwent significant changes in palaeogeography that included rifting of a possible supercontinent and the nearExpand
Accretion of first Gondwana-derived terranes at the margin of Baltica
Abstract In central Europe, three crustal units, i.e. the Małopolska, the Łysogóry and the Bruno-Silesia, can be recognized by basement data, faunas and provenance of clastic material in the CambrianExpand
Early Cambrian location and affinities of the Brunovistulian terrane (Central Europe) in the light of palaeomagnetic data
The Brunovistulian was one of the first tectonic units of Central Europe to be defined as a ‘terrane’. In spite of extensive studies, the Early Palaeozoic palaeogeographical position and provenanceExpand


On the palaeogeography of Baltica during the Palaeozoic: new palaeomagnetic data from the Scandinavian Caledonides
SUMMARY Based on new palaeomagnetic results from the North Norwegian Caledonides, we propose new apparent polar wander paths for Baltica during the Early-Mid Palaeozoic and discuss theirExpand
Palaeozoic palaeogeography: A North Atlantic viewpoint
Abstract Palaeozoic palaeogeography, highlighting the North Atlantic Caledonian evolution and the destruction of the Iapetus Ocean and the Tornquist Sea, is recapitulated with reconstruction mapsExpand
The Neoproterozoic and Palaeozoic palaeomagnetic data for the Siberian Platform: From Rodinia to Pangea
Abstract Using the most reliable palaeomagnetic data from the Siberian Platform we have constructed an apparent polar wander (APW) path extending between 1100 Ma and 250 Ma. From this we derive theExpand
The Ordovician history of the Iapetus Ocean in Britain: new palaeomagnetic constraints
New late Tremadoc—early Arenig palaeomagnetic results from SW Wales imply that S Britain (part of Eastern Avalonia) occupied a southerly latitude of c. 60°S in early Ordovician times. When combinedExpand
Early palaeozoic palaeomagnetism in Australia I. Cambrian results from the Flinders Ranges, South Australia II. Late Early Cambrian results from Kangaroo Island, South Australia III. Middle to early-Late Cambrian results from the Amadeus Basin, Northern Territory
Abstract I. Cambrian results from the Flinders Ranges, South Australia A total of 460 samples from six sequences spanning the Cambrian succession of the Flinders Ranges (Adelaide “Geosyncline”, SouthExpand
Derivation of 500 Ma eclogites from the passive margin of Baltica and a note on the tectonometamorphic heterogeneity of eclogite-bearing crust
Several recent plate reconstructions of the Iapetus Ocean describe the margins of Baltica as passive until Silurian collision with Laurentia. Yet there is a variety of evidence to suggest that theExpand
The Baltoscandian margin in neoproterozoic-early palaeozoic times. Some constraints on terrane derivation and accretion in the Arctic Scandinavian Caledonides
Abstract Deep erosional level, rich exposure and excellent preservation of parts of the passive margin make the Arctic Scandinavian Caledonides (north of 66°N) an ideal area for attempting aExpand
Paleomagnetism of the Catoctin volcanic province: A new Vendian‐Cambrian apparent polar wander path for North America
The Vendian/Cambrian segment of the Lauretian apparent polar wander path (APWP) has been poorly constrained and the subject of some controversy. The Catoctin volcanic province in central Virginia isExpand
The Tornquist Sea and Baltica Avalonia docking
Early Ordovician (Late Arenig) limestones from the SW margin of Baltica (Scania-Bomholm) have multicomponent magnetic signatures, but high unblocking components predating folding, and theExpand
Palaeomagnetism of Lower Cambrian sediments from the Olenek River section (northern Siberia): palaeopoles and the problem of magnetic polarity in the Early Cambrian
SUMMARY New palaeomagnetic data from the Lower and Middle Cambrian sedimentary rocks of northern Siberia are presented. During stepwise thermal demagnetization the stable characteristic remanenceExpand