Petrogenesis and tectonic implications of 2.45 Ga potassic A-type granite in the Daqingshan area, Yinshan Block, North China Craton

An Archean–Paleoproterozoic (A–P) A-type granite 15 km wide and 25 km long has been identified in the Daqingshan area south of the Yinshan Block (YB), North China Craton (NCC). Known as the Jinpen pluton, this body is the largest individual granite pluton in the Daqingshan area. Its crystallization ages of 2460–2450 Ma has been determined precisely using the secondary ion mass spectrometer (SIMS) zircon U–Pb method. The Jinpen pluton is...