SIMS U–Pb zircon dating and Re–Os isotopic analysis of the Hulu Cu–Ni deposit, eastern Tianshan, Central Asian Orogenic Belt, and its geological significance

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dc.contributor.author Han, C.M
dc.contributor.author Xiao, W
dc.contributor.author Zhao, G
dc.contributor.author Su, B.X
dc.contributor.author Sakyi, P.A
dc.contributor.author Ao, S.J
dc.contributor.author Wan, B
dc.contributor.author Zhang, J
dc.contributor.author Zhang, Z
dc.date.accessioned 2015-06-25T10:19:24Z
dc.date.accessioned 2017-10-14T12:14:18Z
dc.date.available 2015-06-25T10:19:24Z
dc.date.available 2017-10-14T12:14:18Z
dc.date.issued 2013
dc.identifier.uri http://197.255.68.203/handle/123456789/6311
dc.description.abstract Exploration of the Hulu Cu–Ni–Co sulfide deposit in Eastern Tianshan, Central Asian Orogenic Belt, has detected horizons of sulfide mineralization in pyroxenite and peridotite units. SIMS U–Pb zircon ages of the gabbro-hosting Cu–Ni–Co sulfide deposit indicate that the Hulu intrusion was emplaced at 282.3 ± 1.2 Ma (95% confidence level, MSWD = 3.30, n = 13). Osmium isotopic data suggest that the Hulu intrusion and associated Cu–Ni mineralization were derived from crustally-contaminated mantle melts. The intrusions clearly show island-arc geochemical signatures, such as negative Nb, Ta, Zr and Ti anomalies and enrichment in LILE. These geochemical tracers indicate that the Hulu mafic–ultramafic intrusions, along with the Cu–Ni deposit, formed as a result of subduction of oceanic crust in the Early Permian. The arc-related geodynamic setting of the Hulu Cu–Ni deposit is unusual for magmatic sulfide deposits. This new type of ore deposit offers an alternative perspective for Cu and Ni exploration. en_US
dc.publisher Journal of Geosciences, 58: 255-274. en_US
dc.subject Hulu Complex en_US
dc.subject SIMS U–Pb zircon en_US
dc.subject Re–Os isotopic data en_US
dc.subject Cu–Ni deposit en_US
dc.subject Eastern Tianshan en_US
dc.subject Central Asian Orogenic Belt en_US
dc.title SIMS U–Pb zircon dating and Re–Os isotopic analysis of the Hulu Cu–Ni deposit, eastern Tianshan, Central Asian Orogenic Belt, and its geological significance en_US
dc.type Article en_US


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