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Neoproterozoic conglomerate–sandstone successions with abundant volcanic components, ranging from 750 to 2200m in thickness, occur along the northwestern margin of the Yangtze Block. They were previously regarded as Sinian tillites and typical platform sediments, or the fills of a passive margin, rifted basin, or arc-related basin in Chinese literature. Crude ripple, parallel, normal- and inverse-grading...
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