Podrobnosti záznamu

Název
    Stable Isotope Composition of Bryozoan Skeletons from Podbřežice (Middle Miocene, Central Paratethys, South Moravia, Czech Republic).
Autor
    Holcová, Katarína
    Nehyba, Slavomír
    Zagoršek, Kamil
Jazyk
    anglicky
Typ dokumentu
    článek ve sborníku
Zdrojový dokument - monografie
    Bryozoan Studies 2007
Strany
    11
Poznámky
    Akce: 2007/07/01 ; Boon, North Carolina, USA
Výraz tezauru
    stable isotopes- Neogene- bryozoa
Klíčové slovo
    Bryozoan
    Central
    Composition
    Czech
    Isotope
    Middle
    Miocene
    Moravia
    Paratethys
    Podbřežice
    Republic
    Skeletons
    South
    Stable
Abstrakt (anglicky)
   The Middle Miocene exposure at Podbřežice (Czech Republic) was analyzed for C and O stable isotopes, including 21 whole rock samples, 98 samples of eight bryozoan species (3 Cyclostomatous and 5 Cheilostomatous) and 19 samples of foraminifer Amphistegina. Post-depositional processes (mainly recrystallization) changed the stable isotopic composition of the whole rock samples. The delta13C values of the bryozoans vary between 0 to 1.7. Two bryozoan groups can be distinguished based on different delta18O values: cyclostomatous bryozoans yield lower values than the cheilostomatous ones. The values shown by foraminiferal tests are closer to the cyclostomatous bryozoans. In contrast, the calculated paleotemperatures for cheilostomatous bryozoans correspond to published paleotemperature data from other taxa from the study area. We are unable to recognize whether the difference among the cheilostomatous and cyclostomatous genera is due to the skeletal ultrastructures, diagenesis, or vital effe
   cts.
Přispěvatel
    MU Brno, Přírodovědecká fakulta
Kód přispěvatele
    MU, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012