【摘要】 <正> 中国西北、北部地槽区早石炭世早期地层分布较广泛。近年来,广大地质工作者在我国西北柴达木盆地北缘(祁连山南坡)、天山、准噶尔、甘肃北山及中国北部区内蒙古、大小兴安岭、吉林中部等地陆续发现了早石炭世早期地层。其生物群主要为菊石、珊瑚、腕足类。和华南地区比较有显著差异。依据这些动物化石产出的层位,建立了该区早石炭世早期生物地层层序,对生物群特征进行了概略的分析,对国内地层进行了简要对比。更多还原

【Abstract】 The Tianshan--Xingan and Qili-anshan regions differ greatly in pa-laontology, lithology and tectonic hi-story from South China. Early LowerCarboniferous strata widespread inthese regions including Jungar, NorthTien Shan, Nei Mongol, Great andMinor Xingan as well as Qilianshanetc. This paper based on entirely newmaterials deals mainly with the bio-stratigraphical sequense and correla-tion.更多还原