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小兴安岭西北部是我国北方志留系和泥盆系发育较好的地区之一。1972—1977年,我们在卧都河、罕达气一带进行地质工作(图1),收集了晚志留世及早泥盆世地层资料,草成此文。
The northwest of Xiaoxing’an Mountains is one of the better developed areas of Silurian and Devonian in northern China. From 1972 to 1977, we carried out geological work in the Wuddu and Qaidam areas (Fig. 1). We collected the Late Silurian and Early Devonian stratigraphic data.