The Kangbao area in Hebei Province is located in the central part of the northern margin of the North China Craton, which is bounded by the Paleo-Asian Ocean tectonic region（also known as the central Asia orogenic belt）to the north. The six kinds of Late Paleozoic granitic intrusive bodies, such as Xiaoxigou, Qianmengjiadi, Shizhuliang, Sanlaohu, Xincun and Xiwufutang, are found within Kangbao County. Zircon LA-ICP-MS isotopic dating of six different samples from the above-mentioned granitic bodies defines six weighted mean ages of about 260.6±1.6 Ma, 264.1±1.7 Ma, 269.5±2.7 Ma, 276.3±1.9 Ma, 280.4±2.0 Ma and 284.7± 1.7 Ma respectively, which is interpreted as the emplacement age of the granitic intrusive bodies and reflects the occurrence of acidic magmatism during the Early-Middle Permian. The granitic bodies from Kangbao area, Hebei Province is related to subduction of Paleo-Asian oceanic crust beneath the North China Craton during Late Paleozoic and shows the tectonic evolution of Paleo-Asian Ocean has multiperiodic characters.
Tian Tao Ni Zhiyao Pan Deng Zhang Hong Wang Yangyang. Late Paleozoic granites within Kangbao area, North Hebei Province: Zircon U-Pb dating and tectonic implications[J]. Chinese Journal of Geology, 2018, 53(2): 661-667.