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《Journal of Stratigraphy》 2004-02
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THE NEW KNOWLEDGE ABOUT THE LOWER CARBONIFEROUS IN THE BAOSHAN BLOCK OF WESTERN YUNNAN

YAO Jin-chang;ZHAO Cheng-feng No.4 Geology Brigude, Yunnan Provincial Geology and Minerals Breau, Baoshan, 678000  
A depositional formation distinctly different from the original Lower Carboniferous was found in the east of the Baoshan Block and is termed the Zhangjiatian Formation.This formation is charaterized by the presence of a lot of elastic rocks intercalated with two layers of altered basalt and yields abundant co nodonts,which may be grouped into three blozones.Its age is of Early Carboniferous Yanguanian to Datangian.
【CateGory Index】: P534.45
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