Ordovician strata

英 美
  • 奥陶系
  • ordovician n.奥陶纪;奥陶系adj.奥陶纪的
  • strata n.地层名词stratum的复数形式.
    1. The Ordovician structure in the middle and east part of the Erdos Basin is a gently west-dipped large monocline.
      鄂尔多斯盆地的中东部奥陶系今构造为一平缓的西倾大单斜。
    2. Finally the stratigraphic ages and correlation of the Ordovician lithostratigraphic units in the study area are discussed.
      笔者认为,申扎组应被废弃,德悟卡下组底界应作修订,并对该地区奥陶系岩石地层单位进行了简要的时代讨论和对比。