Podrobnosti záznamu

Název
    Rate of erosion and exhumation of crystalline rocks in the Hunza Karakoram defined by apatite fission track analysis
Autor
    Kalvoda, J.
    Kořínková, Dagmar
    Svojtka, Martin
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Acta geodynamica et geomaterialia
Svazek/č.
    Roč. 11, č. 3
Strany
    s. 235-253
Rok
    2014
Poznámky
    Rozsah: 16 s. : P
    Výzkumný záměr: CEZ:AV0Z30130516
Předmětová kategorie
    apatite fission-track analysis
    erosion
    exhumation of rocks
    Karakoram
Klíčové slovo
    Analysis
    Apatite
    Crystalline
    Defined
    Erosion
    Exhumation
    Fission
    Hunza
    Karakoram
    Rate
    Rocks
    Track
Abstrakt (anglicky)
   Rapid exhumation of rock massifs in the Hunza Karakoram has been caused by collision orogeny as well as intensive and variable climate-morphogenetic processes during the late Cenozoic. Apatite fission-track dating of crystalline rocks gave AFT-ages between 3.9 ? 0.2 Ma to 9.9 ? 0.4 Ma and constrained the period of a rapid exhumation and unroofing as Upper Miocene to Quaternary. Time-temperature curves of the samples show two trends of exhumation rate: the Upper Miocene to Pliocene period of a slow rate of ca. 0.1 km/Ma followed by the Quaternary period of a relative rapid rate of ca. 2.6 km/Ma. The erosion rate reached up to a maximum of ca. 4000 m from the Upper Miocene to the present. The high intensity of recent denudation and transport of weathered and eroded material suggest their long-term influence on the exhumation of deeper parts of the rock massifs during active orogenetic processes in the Hunza Karakoram.
Přispěvatel
    AV ČR Brno, Geologický ústav
Kód přispěvatele
    AV ČR, GLÚ
Zdrojový formát
    U
Datum importu
    23. 10. 2014