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 the Baltic plate. The palaeopole calculated for the most stable component isolated from the Vendian tuffs and...
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ftlithuaniansrc:oai:elaba:5442474 2023-05-15T18:43:54+02:00 New Late Vendian palaeogeography of Baltica and the TESZ Nawrocki, Jerzy Boguckij, Andrej Katinas, Valentas 2004 http://lmavb.lvb.lt/LMAVB:ELABAPDB5442474&prefLang=en_US eng eng http://lmavb.lvb.lt/LMAVB:ELABAPDB5442474&prefLang=en_US Geological quarterly, 2004, Vol. 48, iss. 4, p. 309-316 ISSN 1641-7291 Baltica Maĺopolska Brunovistulian Vendian Palaeogeography Palaeomagnetism Suture zone info:eu-repo/semantics/article 2004 ftlithuaniansrc 2021-12-02T00:43:44Z 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 the Baltic plate. The palaeopole calculated for the most stable component isolated from the Vendian tuffs and basalts is far away from the Vendian-Cambrian apparent polar wander path (APWP), constructed on the basis of Scandinavian poles but is very close to the pole recently isolated from the Vendian sediments of the White Sea Region. Depending on the polarity of the newly-determined Late Vendian pole, two palaeogeographic models of the Baltic plate in the Late Vendian-Early Cambrian are possible. In our preferred model the Baltic plate moved at that time from the moderate southern latitudes to the equator rotating anticlockwise of ca. 120degrees. This reconstruction explains the geological structures of the marginal zones of Baltica better than the previously proposed stationary model of the Late Vendian-Cambrian Baltica. According to the new late Vendian palaeogeographic scenario, the European, passive margin of Baltica was separated from an active, Avalonian margin of Gondwana. The Late Neoproterozoic tectonic structures of the Brunovistulian Terrane and the Malopolska Block were developed near the present day southwestern corner of Baltica that was tectonically active at that time. Alternative reconstruction shows the Baltic plate moving from the moderate northern latitudes in the Vendian, crossing palaeoequator in the latest Vendian, and reaching moderate southern palaeolatitudes in the Late Cambrian. This model, however, would have required exceptionally high plate velocity (ca. 33 cm/year). Article in Journal/Newspaper White Sea LSRC VL (Lithuanian Social Research Centre Virtual Library) White Sea |
institution |
Open Polar |
collection |
LSRC VL (Lithuanian Social Research Centre Virtual Library) |
op_collection_id |
ftlithuaniansrc |
language |
English |
topic |
Baltica Maĺopolska Brunovistulian Vendian Palaeogeography Palaeomagnetism Suture zone |
spellingShingle |
Baltica Maĺopolska Brunovistulian Vendian Palaeogeography Palaeomagnetism Suture zone Nawrocki, Jerzy Boguckij, Andrej Katinas, Valentas New Late Vendian palaeogeography of Baltica and the TESZ |
topic_facet |
Baltica Maĺopolska Brunovistulian Vendian Palaeogeography Palaeomagnetism Suture zone |
description |
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 the Baltic plate. The palaeopole calculated for the most stable component isolated from the Vendian tuffs and basalts is far away from the Vendian-Cambrian apparent polar wander path (APWP), constructed on the basis of Scandinavian poles but is very close to the pole recently isolated from the Vendian sediments of the White Sea Region. Depending on the polarity of the newly-determined Late Vendian pole, two palaeogeographic models of the Baltic plate in the Late Vendian-Early Cambrian are possible. In our preferred model the Baltic plate moved at that time from the moderate southern latitudes to the equator rotating anticlockwise of ca. 120degrees. This reconstruction explains the geological structures of the marginal zones of Baltica better than the previously proposed stationary model of the Late Vendian-Cambrian Baltica. According to the new late Vendian palaeogeographic scenario, the European, passive margin of Baltica was separated from an active, Avalonian margin of Gondwana. The Late Neoproterozoic tectonic structures of the Brunovistulian Terrane and the Malopolska Block were developed near the present day southwestern corner of Baltica that was tectonically active at that time. Alternative reconstruction shows the Baltic plate moving from the moderate northern latitudes in the Vendian, crossing palaeoequator in the latest Vendian, and reaching moderate southern palaeolatitudes in the Late Cambrian. This model, however, would have required exceptionally high plate velocity (ca. 33 cm/year). |
format |
Article in Journal/Newspaper |
author |
Nawrocki, Jerzy Boguckij, Andrej Katinas, Valentas |
author_facet |
Nawrocki, Jerzy Boguckij, Andrej Katinas, Valentas |
author_sort |
Nawrocki, Jerzy |
title |
New Late Vendian palaeogeography of Baltica and the TESZ |
title_short |
New Late Vendian palaeogeography of Baltica and the TESZ |
title_full |
New Late Vendian palaeogeography of Baltica and the TESZ |
title_fullStr |
New Late Vendian palaeogeography of Baltica and the TESZ |
title_full_unstemmed |
New Late Vendian palaeogeography of Baltica and the TESZ |
title_sort |
new late vendian palaeogeography of baltica and the tesz |
publishDate |
2004 |
url |
http://lmavb.lvb.lt/LMAVB:ELABAPDB5442474&prefLang=en_US |
geographic |
White Sea |
geographic_facet |
White Sea |
genre |
White Sea |
genre_facet |
White Sea |
op_source |
Geological quarterly, 2004, Vol. 48, iss. 4, p. 309-316 ISSN 1641-7291 |
op_relation |
http://lmavb.lvb.lt/LMAVB:ELABAPDB5442474&prefLang=en_US |
_version_ |
1766234433966309376 |