Formation of Chert Breccia from the Transitional Beddings between Neoproterozoic Jingeryu Formaiton and Cambrian Fujunshan 
Formation in Xiaweidian Section, Beijing
LI Chenqing, DONG Lin, SHEN Bing
Acta Scientiarum Naturalium Universitatis Pekinensis . 2023, (3): 415 -426 .  DOI: 10.13209/j.0479-8023.2023.017

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