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The Jingtieshan banded iron formations (JBIFs), located in the western segment of the North Qilian area, are one of the major iron deposits in NW China. The BIF occurs within the Jingtieshan Group intercalated with metasedimentary rocks which have undergone lower greenschist-facies metamorphism, and were intruded by a series of diabase sills/dykes. Here we present U–Pb data on detrital zircons from...
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