Record details

Title
    Constraints on the timing of events in the multiepisodic history of the Teplá-Barrandian complex, western Bohemia, from integration of deformational sequence and Rb-Sr isotopic data
Statement of responsibility
    Jan Košler, D.R. Bowes, C. M. Farrow, A.M. Hopgood, Milan Rieder, Graeme Rogers
Author
    Bowes, D. R.
    Farrow, C. M.
    Hopgood, A. M.
    Košler, Jan, 1965-
    Rieder, Milan
    Rogers, Graeme
Language
    anglicky
Source title - serial
    Neues Jahrbuch für Mineralogie. Monatshefte
Vol./nr.
    No. 5
Pages
    p. 203-220
Year
    1997
Notes
    3 obr., 1 fot., 1 tab., 3 s.bibl.
    Zkr. název ser.: Neu. Jb. Mineral., Mh.
Subject group
    bohemikum
    datování Rb/Sr
    domažlické krystalinikum
    kambrium
    muskovit
    pegmatit
    plagioklasy
    tepelské krystalinikum
    vrásnění kadomské
    vrásnění variské
Geographical name
    ČR-Čechy
    Domažlice
    Mariánské Lázně
    Stráž (Domažlice)
    Újezd (Domažlice)
Keyword
    Bohemia
    Complex
    Constraints
    Data
    Deformational
    Events
    History
    Integration
    Isotopic
    Multiepisodic
    Rb-Sr
    Sequence
    Teplá-Barrandian
    Timing
    Western
Abstract (in english)
   Rb-Sr isotopic systems of muscovite-plagioclase pairs and of biotite from a pegmatite emplaced into polyphase deformed schists showing Barrovian-type mineral assemblages yield ages that constrain the timing of three episodes in the Teplá-Barrandian complex in the Bohemian Massif of the western Czech Republic. (1) Muscovite-plagioclase ages of 502 4 and 500 3 Ma are considered to represent cooling through ca.500°C after a rapid crystallization of pegmatite which is part of widespread granitic magmatism in late Cambrian times; ages of 492 3 and 491 3 Ma are interpreted as reflecting very limited opening of the isotopic systems. (2) A biotite age of ca.373 Ma is interpreted as giving a Mid-Devonian (Givetian) time of foliation development in the pegmatite and foliation reactivation in the host rocks, during a tectonothermal event at an early stage of the Hercynian episode.
   (3) The age of pegmatite emplacement gives an upper (younger) age limit for the polyphase tectonothermal episode (interpreted as the Caledonian episode) during which the regionally expressed Barrovian zones in the Teplá-Barrandian complex were developed. The ages are linked to specific events in the field-based structural-metamorphic-igneous sequence of events that constrains their relative order of formation in the overall geological history of the Bohemian Forest tectonic domain
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    21. 2. 2008
Import date
    8. 8. 2012