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searching for Yanshanian 1 found (2 total)

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Yanshanian Tectonic Period (214 words) [view diff] exact match in snippet view article find links to article

The Yanshanian movement were first recognized by Weng WH (1927,1929) in the Yanshan area, 116°-119.5°N, 40°-42°E. Since then the Yanshanian has been used