Zircon U-Pb geochronology and geochemistry of the Mesozoic magmatism in the Taihang Mountains and other places of the North China craton, with implications for petrogenesis and geodynamic setting
太行山和华北其它地区中生代岩浆作用的锆石U-Pb年代学和地球化学特征及其岩浆成因和地球动力学意义

The Mesozoic rocks from eastern North China Craton(NCC) range in composition from gabbroic to monzogranitic, showing high-K calc-alkaline to shoshonitic affinity, high Sr-Ba and high Sr/Y, La/Yb, and highly enriched Sr-Nd isotopic compositions. SHRIMP zircon dating for four pinions from the Taihang Mountains, westernmost NCC, yields ages of 138-127 Ma, which, along with published ages for magmatic rocks from other parts of eastern Kast Asia, reveal a northwestward younging trend of calc-alkaline magmatism from Japan island chain (and Korean peninsula; 210 Ma) , through Jiaodong and Liaodong Peninsula ( 180 Ma) , and to the Taihang orogen ( 138 Ma). This suggests the genesis of the Mesozoic rocks in the NCC was linked to the subduction of the paleo-Pacific plate, rather than to the Triassic collision between the Yangtze block and NCC. The lack of a regular variation in compositions from the coastal areas to interiors of eastern China as is shown by the magmatic rocks in the Basin and Range is probably related to the "flat subduction" of the paleo-Pacific slab beneath the NCC. Moreover, they probably originated from mixing between mafic magmas from enriched mantle sources and crust-derived granitic melts, followed by fractionation, rather than from melting of mafic lower crust as previously suggested by many others.