西秦岭武山杨河-礼县固城地区石炭纪地层的发现及其意义

Discovery of the Carboniferous in the Yanghe(Wushan)-Gucheng(Lixian)area and its geological significance

摘要: 通过区域地质调查，在西秦岭天水地区武山杨河-礼县固城一带原划上泥盆统大草滩群和中泥盆统舒家坝群中解体出一套石炭纪沉积地层。根据所发现的牙形刺、珊瑚、非篮有孔虫化石，确定其地质时代为早石炭世。

Abstract: Through regional geological survey,a sequence of Carboniferous sedimentary strata is divorced from the strata originally assigned to the Upper Devonian Dacaotan Group and Middle Devonian Shujiaba Group in the Yanghe(Wushan)-Gucheng(Lixian)area in the West Qinling.According to conodont ,coral and foraminifera fossils discovered,the geological age of this sequence of sedimentary strata is Early Carboniferous.