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The subcontinental lithospheric mantle (SCLM) in the southern margin of the North China Block was modified by the Triassic subduction of the South China Block, but less is known about subsequent events. This study presents a geochemical study of its anatectic products, Mesozoic gabbroic rocks from the southeastern edge of the North China Block. Zircon U–Pb dating gave ages of 119±4 to 131±1Ma for...
Cratonisation is regarded as coincident with amalgamation and lithosphere thickening during collisional tectonics, leading to the birth of the cratonic entities we know today. These are, however, themselves rifted remnants of earlier plate configurations involving cratonic nuclei whose mode of formation conditioned their properties, hence stability and further evolution. Dating of inclusions in diamonds...
A combined study of zircon U–Pb ages and Lu–Hf isotopes, whole-rock major-trace elements and Sr–Nd isotopes as well as whole-rock and mineral O isotopes was carried out for Mesozoic gabbroic intrusives in the southeastern edge of the North China Block (NCB). The zircon U–Pb dating yields consistent ages of 131±2 to 136±2Ma for magma crystallization. The gabbroic rocks are characterized by arc-like...
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