Podrobnosti záznamu

    Characteristics of internal contacts in the Tuolumne Batholith, central Sierra Nevada, California (USA): Implications for episodic emplacement and physical processes in a continental arc magma chamber
Další názvy
    Charakteristika interních kontaktů v Tuolumne batolitu
    Paterson, Scott
    Žák, Jiří
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Geological Society of America Bulletin
    Roč. 117, č. 9-10
Výraz tezauru
    batholith, pluton, intrusive contacts, emplacement, Sierra Nevada, Tuolumne Batholith
Klíčové slovo
Abstrakt (česky)
   Studie se zabývá procesy podél interních kontaktů v Tuolmne batolitu, California
Abstrakt (anglicky)
   Internal contacts along the eastern margin of the Tuolumne Batholith, central Sierra Nevada, California, and structures preserved along these contacts, are highly variable; the contacts range from relatively sharp, to gradational boundaries, to sheeted zones, to very complex boundaries formed by multiple processes. Fractional crystallization, kilometer-scale mixing within broad transition zones, voluminous magmatic stoping along sharp contacts, and downward return flow (and/or margin collapse) of older magma units were important large-scale processes along these contacts during chamber construction. In contrast, sheeting, extensional cracking and diking represent only second-order, small-scale complexities. Formation of the most complex zones along internal contacts resulted from the interaction of the sequential emplacement of different units with the irregular geometry of these contacts, which often resulted from removal of earlier phases by stoping.
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
Datum importu
    15. 10. 2014