Petrogenesis and tectonic setting of the Shiduolong skarn Pb–Zn deposit in the East Kunlun Orogenic Belt: Constraints from whole‐rock geochemical, zircon U–Pb and Hf isotope analyses

The Shiduolong Pb–Zn deposit, located in the East Kunlun Orogenic Belt, is a medium‐scale skarn deposit (0.4 Mt metal reserves with a grade of 1.46% Pb and 4.38% Zn). The mineralization occurs along the contact zone between Carboniferous marbles and Triassic quartz diorite and granodiorite. Zircon L...

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Veröffentlicht in:	Geological journal (Chichester, England) England), 2018-05, Vol.53 (3), p.1022-1038
Hauptverfasser:	Wang, Yongbin, Guo, Yunpeng, Zeng, Qingdong, Guo, Lixiang, Liu, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anomalies Barium Carboniferous Crystallization Diorite Earth East Kunlun Orogenic Belt Fractional crystallization Fractionation Geochemistry Hafnium Heavy metals Hf isotopes Isotopes Lava Lead Magma Magmatic water Mineralization Paleoceanography Petrogenesis Quartz Rare earth elements Shiduolong Silica Silicon dioxide Strontium Subduction Subduction (geology) Titanium dioxide Triassic Zinc Zircon zircon U–Pb age
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Zusammenfassung:	The Shiduolong Pb–Zn deposit, located in the East Kunlun Orogenic Belt, is a medium‐scale skarn deposit (0.4 Mt metal reserves with a grade of 1.46% Pb and 4.38% Zn). The mineralization occurs along the contact zone between Carboniferous marbles and Triassic quartz diorite and granodiorite. Zircon LA‐ICP‐MS dating indicates that the Shiduolong quartz diorite is coeval with the granodiorite (245 Ma). Whole‐rock geochemical analysis shows that both phases are high‐K calc‐alkaline metaluminous (A/CNK
ISSN:	0072-1050 1099-1034
DOI:	10.1002/gj.2941