Dev Geochem. Timing and processes of late Mesozoic mid-lower-crustal extension in continental NE Asia and implications for the tectonic setting of the destruction of the North China Craton: These ranges reflect the typical characteristics of the lower crust lead isotope Fig 13C and 13D. Samples are loaded into pits in a copper disk in an evacuated sample chamber. The mixture is then subjected to step-wise table-top dissolution and cation-exchange chromatography. Xiao Wenjiao W, Brian F.
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Examples from the eastern Tethyan metallogenic domain.
Simultaneous determinations of U—Pb age, Hf isotopes and trace element compositions of zircon by excimer laser-ablation quadrupole and multiple-collector ICP-MS. Introduction The association of mineralization with shoshonitic magmatism is a characteristic feature of the northern part of the North China Craton NCC [ 1 — 4 ]; however, this has not been previously described in detail for Huajian gold deposit Fig 1. Patton, C. A similar relation is observed in the northern margin of the NCC during the late Mesozoic with A-type granites containing large-scale polymetallic mineralization [ 84 — 87 ]. View Article Google Scholar. Implications for mantle composition and processes. S1 Table.