Geochemistry, zircon U-Pb dating and tectonic implications of the Palaeoproterozoic Ji’an and Laoling groups, northeastern Jiao-Liao-Ji Belt, North China Craton

The Jiao-Liao-Ji Belt is located between the Longgang and Langrim blocks in the Eastern Block of the North China Craton (NCC). The belt comprises Palaeoproterozoic volcanic–sedimentary successions that are divided into the Ji’an, South Liaohe, and Jingshan groups in the south and the Laoling, North Liaohe and Fenzishan groups in the north. The tectonic setting and depositional environments of the Liao-Ji area are debated. This paper presents...