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Details of the collision between the Cathaysia and Yangtze blocks have long been debated. Detailed geological, geochemical, and C and O isotopic studies were carried out on the plagioclase amphibolite and marble in the Chencai area, Zhuji city, Zhejiang Province. The plagioclase amphibolite yields U–Pb age of 435 ± 11 Ma, which represents the metamorphic age, and the youngest age indicates that the...
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