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The Qinling orogen marks the continental collision between the North China Block and the South China Block in the Triassic, but the Triassic collisional orogeny is only prominent in the South Qinling zone with the occurrence of voluminous granites. In order to understand the petrogenesis of these granites, a combined study of petrology, geochronology and geochemistry was carried out for them from...
Postcollisional mafic to felsic dykes in the western part of the Sulu orogen consist of monzogranite, diorite, plagioclase-bearing hornblendite and gabbro. LA-ICPMS zircon U–Pb dating yielded broadly consistent ages of 111±3 to 129±1Ma for their crystallization, with Neoproterozoic ages of 743±9 to 773±9Ma for residual cores. The mafic to felsic dykes are characterized by the arc-like patterns of...
A combined study of zircon U–Pb ages and Lu–Hf isotopes, mineral O isotopes, whole-rock elements and Sr–Nd isotopes was carried out for Mesozoic granitoids from the Shandong Peninsula in east-central China, which tectonically corresponds to the eastern part of the Sulu orogen that formed by the Triassic continental collision between the South and North China Blocks. Four plutons were investigated...
A combined study of geochronology and geochemistry was carried out for Neoproterozoic granodiorites at the southeastern margin of the Yangtze Block in South China. The results demonstrate that sedimentary rocks derived from juvenile crust were melted to form strongly peraluminous granite in an arc-continent collision zone, resulting in continental growth. LA-ICPMS zircon U-Pb dating yields two groups...
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