Geochemical constraints on the origin of Neoarchean magmatic rocks in the Lüliang Complex, North China Craton: Tectonic implications
Precambrian Research(2019)
摘要
•Basalts and andesites formed at ∼2535–∼2486 Ma, followed by crustal anatexis at ∼2489 Ma.•The mafic rocks were produced by partial melting of the pyroxene-rich subarc mantle domains.•The basalts and andesites were most likely formed in a continental arc setting rather than an oceanic arc setting.•Plate subduction and mafic arc magmatism in the North China Craton can be traced back to at least 2.65 Ga.•The 2.6–2.5 Ga event manifested as widespread accretionary orogenesis in Eastern North China.
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关键词
Basalt,Andesite,Neoarchean,Arc magmatism,Plate subduction,North China Craton
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