Neoproterozoic bimodal volcanism in the Okcheon Belt, South Korea, and its comparison with the Nanhua Rift, South China: implications for rifting in Rodinia
A systematic geochemical examination and zircon U-Pb dating of Neoproterozoic bimodal volcanic rocks from the Chungju area in the northeast segment of the Okcheon Metamorphic Belt (OMB), South Korea, allow a comparison with similar rocks from the Nanhua Rift, South China. The bimodal metavolcanics of the Chungju area comprise the subalkaline to alkaline basalts (hereafter "mafic metavolcanic rocks") and trachytes (hereafter "felsic metavolcanic rocks"). The mafic metavolcanic rocks are...[Show more]
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|Source:||Journal of Geology|
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