Podrobnosti záznamu

Název
    Detritické a autigenní REE minerály v sedimentech kulmu Drahanské vrchoviny, jejich význam pro studium provenience klastického materiálu a procesů diagenese
Další názvy
    Detrital and authigennic REE minerals from Culm sediments of Drahany Uplands, their significance for provenance study of clastic material and diagenetic processes
Autor
    Čopjaková, Renata
    Škoda, Radek
Jazyk
    česky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Acta Musei Moraviae, Sci. Geol.
Svazek/č.
    Roč. 91, č. 1
Strany
    129
Rok
    2006
Výraz tezauru
    authigenic minerals
    diagenesis
    Drahany Upplands
    monazite alteration
    rhabdophane-(Ce)
    synchysite-(Ce)
    thorogummite
Klíčové slovo
    Autigenní
    Detritické
    Diagenese
    Drahanské
    Klastického
    Kulmu
    Materiálu
    Minerály
    Procesů
    Provenience
    REE
    Sedimentech
    Studium
    Vrchoviny
    Význam
Abstrakt (česky)
   Electron microprobe study of mineral chemistry, chemical age and alteration of detrital monazite as well as composition and textural position of authigenic REE minerals - rhabdophane-(Ce), synchysite-(Ce) and thorogummite - have been carried out on the samples of clastic Culm sediments from the Drahany Uplands. Detrital monazite is commonly homogeneous in BSE, only it exceptionally shows an irregular zoning. Some monazite grains are replaced by apatite and hydrated REE-minerals propagating from rim inwards and along fractures. Three different stages of detrital monazite alteration were observed: the first stage is characterized by minor depletion of heavy REE (Gd, Dy, Er), Y, Th and Pb, but it does not show any significant deviations in the ideal stochiometry. The second stage is accompanied by strong depletion of Gd, Dy, Er, Y, Th, U and Pb, the stochiometry is disrupted and totals decrease up to 98-96 wt. percent of oxides.
Abstrakt (anglicky)
   Electron microprobe study of mineral chemistry, chemical age and alteration of detrital monazite as well as composition and textural position of authigenic REE minerals - rhabdophane-(Ce), synchysite-(Ce) and thorogummite - have been carried out on the samples of clastic Culm sediments from the Drahany Uplands. Detrital monazite is commonly homogeneous in BSE, only it exceptionally shows an irregular zoning. Some monazite grains are replaced by apatite and hydrated REE-minerals propagating from rim inwards and along fractures. Three different stages of detrital monazite alteration were observed: the first stage is characterized by minor depletion of heavy REE (Gd, Dy, Er), Y, Th and Pb, but it does not show any significant deviations in the ideal stochiometry. The second stage is accompanied by strong depletion of Gd, Dy, Er, Y, Th, U and Pb, the stochiometry is disrupted and totals decrease up to 98-96 wt. percent of oxides.
Přispěvatel
    MU Brno, Přírodovědecká fakulta
Kód přispěvatele
    MU, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012