Podrobnosti záznamu

Název
    Variscan veins: record of fluid circulation and Variscan tectonothermal events in Upper Palaeozoic limestones of the Moravian Karst, Czech Republic
Autor
    Keppens, Eddy
    Král, Jan
    Muchez, Philippe
    Slobodník, Marek
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Geological Magazine
Svazek/č.
    Roč. 143, č. 3
Strany
    18
Rok
    2006
Výraz tezauru
    calcite veins
    fluid dynamics
    Palaeozoic
    syntectonic processes
Klíčové slovo
    Circulation
    Czech
    Events
    Fluid
    Karst
    Limestones
    Moravian
    Palaeozoic
    Record
    Republic
    Tectonothermal
    Upper
    Variscan
    Veins
Abstrakt (anglicky)
   Numerous Variscan syntectonic calcite veins crosscut Palaeozoic rocks in the Moravian Karst. The isotopic signatures point to precipitation in an older fluid system buffered by the host rock (white calcites) and to an open, younger fluid dominated system (rose calcites). Parent fluids (H2O-NaCl system) had salinities between 0.35 and 17.25 eq. wt% NaCl and temperature between 120 and 170C, a pressure of 300-880 bar at a depth between 2.1 and 3.2 km. The fluids were most likely confined to a particular sedimentary bed as a bed-scale fluid migration. The low temperatures and pressures during precipitation of calcites, which took place close to a peak of burial/deformation, confirm the distal position of the Moravian Karst region within the Variscan orogen.
Přispěvatel
    MU Brno, Přírodovědecká fakulta
Kód přispěvatele
    MU, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012