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Characteristics of rare earth elements and cerium anomalies in cherts from the Paleo-Tethys in Changning-Menglian belt in western Yunnan, China

DING Lin and ZHONG Dalai(Laboratory of Lithosphere Tectonic Evolution Institute of Geology, Chinese Academy of Sciences, Beijing 100029, China)  
Based on research on rare earth elements (REEs) and cerium anomalies in cherts from the Paleo-Tethys, their depositional environments are shown and the evolution of the Paleo-Tethys is traced. The amount of terrigenous, biogenic and hydrothermal inputs are the important factors that affect the REEs composition of the cherts.
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