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The late Paleoproterozoic Jianping diorite–monzonite–syenite suite (JDMSS), in the Western Liaoning Province (WLP) along the northern margin of the North China Craton (NCC), is composed mainly of magnetite diorites, clinopyroxene monzonites, syenites, and quartz syenites. LA-ICP-MS zircon U–Pb isotopic dating indicates that this complex emplaced between 1696 and 1721Ma, almost synchronously with the...
Early Mesozoic alkaline intrusive complexes are widespread in the northern North China Craton (NCC) and constitute an E–W trending alkaline magmatic belt that is more than 1500km long along the northern Sino–Korean Craton. Our new zircon and baddeleyite U–Pb dating results of the Yongfucun, Yaojiazhuang and Sungezhuang alkaline complexes combined with previous geochronological data indicate emplacement...
A joint inversion method of simultaneously inverting regional multimode surface waveforms and fundamental-mode surface wave dispersion curves is used to better constrain a 3-D S-wave velocity model for the upper mantle beneath China. Thousands of broadband vertical-component seismograms were processed, and ∼16,500 Rayleigh-wave group-velocity measurements were retrieved at a period of 20s, with fewer...
The Late Paleozoic to Early Mesozoic mafic–ultramafic complexes from the northern North China Block (NCB) are used to constrain the isotopic composition and evolution of mantle reservoirs during different tectonic stages prior to the initiation of lithosphere destruction in the Late Mesozoic. Zircon U–Pb ages show that emplacement of the mafic–ultramafic complexes occurred in at least three stages:...
Integrated geochemical and Sr–Nd–Pb isotopic studies of the Early Jurassic Nandaling flood basalts (NFB) in the Yanshan belt, northern margin of the North China Craton (NCC), are presented in this paper. These sub-alkaline basalts evolved from a more magnesium-rich parental magma through fractional crystallization of olivine and clinopyroxene. The primitive magma of the NFB originated from 2–5% partial...
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