➁No.2 Regional Geological Survey Team, Yunnan Bureau of Geology and Mineral Resources, 1970, Explanatory Text of 1∶200 000 Scale Geological Map: Gejiu Sheet ➂The famous mountain Ailaoshan in Gejiu County, Yunnan Province ➃A sequence of strongly mixed metamorphic rocks which had been subdivided unsuitably into four formations: Xiaoyangjie Formation, Along Formation, Fenggang Formation and Wudukeng Formation ➄Palaeoproterozoic.


Black Shale Late Carboniferous Early Jurassic Late Ordovician Coal Measure 
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© Higher Education Press, Beijing and Springer-Verlag Berlin Heidelberg 2009

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