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Whether a Neoarchean basement existing in the Songnen massif is currently debated. Identification of Archean magmatism from the Songnen Massif is helpful to resolve this issue. Here, we report newly discovered Neoarchean Shanquan pluton in the Western Songnen Massif. These Neoarchean Shanquan pluton are mainly composed of granites that are exposed near the town of Shanquan in Heilongjiang Province. LA‐ICP‐MS zircon U‐Pb dating reveals that the sample 2015TW1 has an upper intercept age of 2801 ± 69 Ma and a weighted mean age of 2708 ± 18 Ma, while samples LJ27QY1 and LJ27QY2 have upper intercept ages of 2677 ± 57 Ma and 2653 ± 18 Ma, and weighted mean ages of 2649 ± 10 Ma and 2653 ± 15 Ma, respectively. This indicates that these granites were formed at ~2.7 Ga. Most of the ~2.7 Ga zircons have older TDM2 ages of 2762–3326 Ma with positive εHf(t) values ranging from 0 to 6.4, while a few of the zircons have negative εHf(t) values ranging from −8.1 to −11.5 and older TDM2 ages varying from 3158 to 3264 Ma. The zircon Hf isotopes indicate that Paleo‐Mesoarchean crusts might once existed in the Songnen Massif, and the studied Neoarchean magmas were principally derived from partial melting of these Paleo‐Mesoarchean ancient crust. Based on the geochronological spectrum of magmatic and detrital zircons, the Songnen, Erguna, Jiamusi, Bureya massifs may have a common basement prior to the Neoproterozoic and may even be linked with the Triam Craton. [ABSTRACT FROM AUTHOR]

The article discusses geochemical characteristics of granitoids rock by zircon uranium-lead dating in the Jinchang copper-gold deposit, Heilongjiang Province, China. Topics discussed include division of intrusive boies into five periods by diagenetic age, formation of granitoids since collisional regime of magma-fluid in the Jinchang mining area, and the metallogenic age of the Jinchang copper-gold deposit.