late carboniferous to middle permain 晚石炭世一中二叠世
Three topics are discussed in this paper: (1) the time of ocean-continent transformation and the prototype of the Middle-Late Carboniferous Junggar basin.
文中讨论了以下三个问题：(1)洋-陆转换时限和中、晚石炭世盆地原型。
The material source of the Carboniferous karst type bauxite in North China mainly came from the underlying Late cambrian-middle Ordovician carbonate rock.
华北石炭纪岩溶型铝土矿的主要物质来源为下伏的晚寒武世—中奥陶世碳酸盐岩。
Then Kelameili orogenic belt was developed in the northwest during middle and late periods of Late Carboniferous.
首先是西北缘：早石炭世末期形成西北缘界山的雏形；
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