Podrobnosti záznamu

Název
    Early Cambrian location and affinities of the Brunovistulian terrane (Central Europe) in the light of palaeomagnetic data
Údaj o odpovědnosti
    Jerzy Nawrocki, A. Zylinska, Z. Bula, Jacek Grabowski, P. Krzywiec, Pawel Poprawa
Autor
    Buła, Zbigniew
    Grabowski, Jacek
    Krzywiec, P.
    Nawrocki, Jerzy
    Poprawa, Pawel
    Zylinska, A.
Jazyk
    anglicky
Zdrojový dokument - seriál
    Journal of the Geological society
Svazek/č.
    Vol. 161, no. 3
Strany
    p. 513-522
Rok
    2004
Poznámky
    8 obr.
    Bibliografie na s. 520-522
    il.
    Zkr. název ser.: J. Geol. Soc. (Bath)
Klasifikační znak
    55(1)
    551.2
Skupina konspektu
    55
Předmětová skupina
    brunovistulikum
    Gondwana
    kambrium-spodní
    paleobiogeografie
    paleogeografie
    paleomagnetismus
    paleošířka
    paleozoikum-spodní
    profil vrtný
    terán
    Trilobita
Geografické jméno
    ČR-Morava
    Polsko-Kraków
Klíčové slovo
    Affinities
    Brunovistulian
    Cambrian
    Central
    Data
    Early
    Europe
    Light
    Location
    Palaeomagnetic
    Terrane
Abstrakt (anglicky)
   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 provenance of this unit remains unclear. A palaeomagnetic study of the Lower Cambrian red beds and a study of the trilobite fauna were performed to provide constraints on the palaeogeographical position of the terrane in Early Cambrian time. Good quality palaeomagnetic data obtained from the Lower Cambrian red beds suggest the mixed nature of the Early Cambrian geomagnetic field and a nearly equatorial position (a palaeolatitude of c. 7°) of the Brunovistulian terrane in the Early Cambrian. Comparison of this palaeolatitude with existing palaeogeographical models leads to the conclusion that at this time the Brunovistulian terrane was separated by a great distance from the Avalonian margin of Gondwana.
   The terrane was located within the Cadomian belt, occupying a position north of the present-day northem margin of Africa. It was coupled to the present-day southern margin of Baltica during the Cambrian, when Baltica moved along the Cadomian margin of Gondwana. Another possibility is that the Brunovistulian terrane could have remained near this margin of Baltica since Grenvillian time and was incorporated into the Cadomian orogen
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    24. 10. 2006
Datum importu
    8. 8. 2012