Podrobnosti záznamu

Název
    PGE distribution in massive sulfides from the PACMANUS hydrothermal field, eastern Manus basin, Papua New Guinea: implications for PGE enrichment in some ancient volcanogenic massive sulfide deposits
Další názvy
    PGE enrichment in massive sulfides from the PACMANUS hydrothermal field, eastern Manus basin, Papua New Guinea: implications for PGE enrichment in some ancient volcanogenic massive sulfide deposits
Autor
    Herzig, P.
    Pašava, Jan
    Petersen, S.
    Vymazalová, Anna
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Mineralium Deposita
Svazek/č.
    Roč. 39, č. 7
Strany
    10
Rok
    2004
Výraz tezauru
    platinum group elements, Pd and Rh enrichment, volcanogenic massive sulfides, hydrothermal vents, Manus basin
Klíčové slovo
    Ancient
    Basin
    Deposits
    Distribution
    Eastern
    Enrichment
    Field
    Guinea
    Hydrothermal
    Implications
    Manus
    Massive
    New
    PACMANUS
    Papua
    PGE
    Sulfide
    Sulfides
    Volcanogenic
Abstrakt (česky)
   The distribution of PGE in Cu- and Zn-rich samples from the Roman Ruins and Satanic Mills vent sites in the PACMANUS hydrothermal field was studied and compared to that from selected ancient volcanogenic massive sulfide deposits. Samples from the Satanic Mills site are enriched in Pd and Rh when compared to samples from Roman Ruins and reach highest values in active and inactive Cu-rich black smoker chimneys and chalcopyrite-cemented dacite breccias (up to 356 ppb Pd and up to 145 ppb Rh). Comparisons of chondrite normalized patterns and values of Pd/Pt and Pd/Ir ratios in Cu-rich sulfides and probable source rocks (felsic volcanic rocks/MORB) along with the evidence for a magmatic component in the PACMANUS hydrothermal system indicate that leaching of back-arc volcanic rocks together with addition of magmatic volatiles to the convecting hydrothermal system were the most important factors for PGE enrichment at PACMANUS.
Abstrakt (anglicky)
   The distribution of PGE in Cu- and Zn-rich samples from the Roman Ruins and Satanic Mills vent sites in the PACMANUS hydrothermal field was studied and compared to that from selected ancient volcanogenic massive sulfide deposits. Samples from the Satanic Mills site are enriched in Pd and Rh when compared to samples from Roman Ruins and reach highest values in active and inactive Cu-rich black smoker chimneys and chalcopyrite-cemented dacite breccias (up to 356 ppb Pd and up to 145 ppb Rh). Comparisons of chondrite normalized patterns and values of Pd/Pt and Pd/Ir ratios in Cu-rich sulfides and probable source rocks (felsic volcanic rocks/MORB) along with the evidence for a magmatic component in the PACMANUS hydrothermal system indicate that leaching of back-arc volcanic rocks together with addition of magmatic volatiles to the convecting hydrothermal system were the most important factors for PGE enrichment at PACMANUS.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014