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The story of post-Variscan lamprophyres of the Bohemian Massif: from ultramafic (Upper Cretaceous–Palaeocene) to alkaline (Eocene–Oligocene) types

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F41601670%3A_____%2F20%3AN0000021" target="_blank" >RIV/41601670:_____/20:N0000021 - isvavai.cz</a>

  • Result on the web

    <a href="https://sp.lyellcollection.org/content/early/2021/03/15/SP513-2020-233" target="_blank" >https://sp.lyellcollection.org/content/early/2021/03/15/SP513-2020-233</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1144/SP513-2020-233" target="_blank" >10.1144/SP513-2020-233</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    The story of post-Variscan lamprophyres of the Bohemian Massif: from ultramafic (Upper Cretaceous–Palaeocene) to alkaline (Eocene–Oligocene) types

  • Original language description

    Post-Variscan lamprophyres of the Bohemian Massif hold the potential for the understanding of deep-mantle processes beneath the Bohemian Massif in association with mantle metasomatism as a consequence of Variscan subduction and Late Palaeozoic extension in Central Europe and tectonic processes between Variscan blocks. Two principal types of post-Variscan lamprophyres occur in the Bohemian Massif, contrasting in their age and composition: ultramafic lamprophyres of Late Cretaceous to Palaeocene age and alkaline lamprophyres of Mid Eocene to Late Oligocene age. Combination of published and new whole-rock, isotope (Sr–Nd–Pb) and radiometric (K/Ar) data on lamprophyres of both types (including new data from samples from the deep boreholes) significantly contributes to the understanding of the changing tectonomagmatic position of post-Variscan volcanism in the Bohemian Massif. The striking shift in lamprophyre geochemistry is paralleled by a change in their structural position from the initial pre-rift period of volcanism to the developed syn-rift period and the related change in their mantle sources beneath the Bohemian Massif. The Late Cretaceous and Cenozoic volcanism is explained as related to lithospheric flexuring during the Alpine orogeny, resulting in an asthenospheric upwelling, or associated with the lithosphere deformation and perturbation of the thermal boundary layer.

  • Czech name

  • Czech description

Classification

  • Type

    C - Chapter in a specialist book

  • CEP classification

  • OECD FORD branch

    10505 - Geology

Result continuities

  • Project

    <a href="/en/project/GX19-29124X" target="_blank" >GX19-29124X: EVOLUTION AND POST-EMPLACEMENT HISTORY OF CARBONATITES: IMPLICATIONS FOR THE MOBILITY AND CONCENTRATION OF CRITICAL METALS</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Book/collection name

    Geological Society of London

  • ISBN

    978-1-78620-543-8

  • Number of pages of the result

    33

  • Pages from-to

    237-269

  • Number of pages of the book

    489

  • Publisher name

  • Place of publication

  • UT code for WoS chapter