Geochronology and geochemistry of late Carboniferous-middle Permian I- and A-type granites and gabbro-diorites in the eastern Jiamusi Massif, NE China: Implications for petrogenesis and tectonic setting
The studied intrusions in the Jiamusi Massif were emplaced at 302–267 Ma. The I- and A-type granites formed by different crustal contributions. The gabbro–diorites were derived from heterogeneous mantle sources. A slab break-off probably existed during the Permian.