1) the end of early Ordovician
早奥陶世末期
2) Early Ordovician
早奥陶世
1.
Analysis of momentary Characteristics and Evolution of Early Ordovician in Central Tarim Area.;
塔中地区早奥陶世沉积特征及沉积演化分析
2.
The carbonate storm deposit of early Ordovician Yeli Formation in Pingquan area, Hebei Province;
河北省平泉早奥陶世冶里组碳酸盐风暴沉积
3.
According to the analysis of sedimentary facies of Early Ordovician in Wudang,Guiyang,the authors suggest that the initial growth of Gaoyang fault took place in Early Ordovician and that the palae-fault experienced two revivals in the later tectonic movement.
根据贵阳乌当地区高院断层两侧早奥陶世地层的沉积相分析，首次提出了高院断层的最初形成时代为早奥陶世时期，在后期的构造运动中该古断裂发生了两次显著的复
4) Early Ordovician Tremadocian
早奥陶世特马道克期
1.
Four third order orthosequences have been recognised in the latest Cambrian to Early Ordovician Tremadocian ( from the Cordylodus intermedius to Serratognathus zones) successions in the Hunan and Hubei parts of the Yangtze platform.
从寒武纪末至早奥陶世特马道克期 (牙形类Cordylodusintermedius带至Serratognathus带 ) ,地处扬子陆块的湘鄂地区分为 3个沉积区 :浅水碳酸盐台地沉积区、台地东南缘碳酸盐岩与泥质岩混合沉积区和较深水细碎屑岩沉积区。
5) late ordovician-early silurian glacial period
晚奥陶-早志留世冰期
6) Lower Ordovician
早奥陶世<地>
补充资料：陶世
1.谓陶冶教化世俗。
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