The geochemical composition of the Middle-Upper Proterozoic turbidites in Hunan, South China is related to provenance and tectonic setting of the sedimentary basin. The turbidites are characterized by moderate SiO 2 contents (Al 2 O 3 /SiO 2 typically 0.1-0.3) and moderate K 2 O/Na 2 O ratios (gener...
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