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- Late Ordovician period 晚奥陶世
- Early Silurian sedimentary rocks in Sichuan area were formed in the foreland basin stage during the period from the Late Ordovician to the Early Silurian. 摘要四川地区早志留世沉积岩系形成于晚奥陶世一早志留世的前陆盆地演化阶段。
- This was the result from the large-scale regression in the Late Ordovician. 这是奥陶纪晚期大规模海退的结果。
- Any of various large, segmented aquatic arthropods of the order Eurypterida that existed from the Ordovician Period to the Permian Period. (古生)板足鲎目的一种巨大的、有节的,属于板足鲎目的水生节肢动物,生存于奥陶纪到二叠纪时期
- DOES "LILLIPUT EFFECT" OF BRACHIOPODS EXIST IN SOUTH CHINA AFTER THE LATE ORDOVICIAN MASS EXTINCTION? 华南奥陶纪末大灭绝后腕足动物是否存在“小型化效应”?
- The development of an atypical Hirnantia-brachiopod Fauna and the onset of glaciation in the late Ordovician of Gondwana / Owen E. Sutcliffe ... [et al.]. 冈瓦纳古陆晚奥陶统一个典型的赫南特贝属-腕足动物群的发育和冰川作用的开始.
- The generation of hydrocarbons of the Ordovician source is different from that of Mesozoic nd Cenozoic sources since there were on high plants in the Ordovician Period. 由于当时没有高等植物出现,因此奥陶系烃源岩在油气生成上与我国东部中、新生界陆相烃源岩有着明显的不同。
- Late Ordovician organic reefs composed of cyanophyta and calcareous sponge were firstly discovered in northern Tarim basin. 在塔里木盆地北部首次发现了主要由蓝绿藻和钙质海绵组成的晚奥陶世生物礁。
- Five past extinctions: Some event near end of the Ordovician period, 440m years ago, wiped out almost all corals and fish, and 25 % of all families of creatures. 历史上曾发生过的5次物种大灭绝:4.4亿年前奥陶纪将要结束时的一些事件使几乎所有的珊瑚和鱼类以及25%25的物种灭绝;
- The study of reservoir bitumen showed that the source is not only the carbonate in middle and late ordovician, but also the carbonate in Cambrian. 储层沥青研究表明烃源岩不仅仅只有中上奥陶系烃源岩,还有寒武系烃源岩。
- Benxi water tunnel in the limestone is the Ordovician period under the EC-Hill Group and the EC in the Majiagou group, the role of a rock from development. 本溪水洞的石灰岩就是在这个时期的奥陶系下统亮山组和中统马家沟组时,经过岩化作用发育而成。
- Bachu arch,one of hydrocarbon abundance units in Tarim basin,has experienced a series of rise and denudation as well as drop and sedimentation since Ordovician period. 巴楚凸起是塔里木盆地油气富集单元之一,自奥陶纪以来经历了多次隆升剥蚀与下降沉积的交替过程,经喜马拉雅运动期的断裂褶皱、抬升剥蚀,定型为塔西南前陆盆地的前缘隆起。
- The development of an atypical Hirnantia-brachiopod Fauna and the onset of glaciation in the late Ordovician of Gondwana/ Owen E. Sutcliffe...[ et al.]. 冈瓦纳古陆晚奥陶统一个典型的赫南特贝属-腕足动物群的发育和冰川作用的开始.
- SONG Qingyuan,CUI Zhilin,HUA Hong,et al.The Late Ordovician radiolaria from Fuping of Shaanxi Province,China[J].Journal of Northwest University,2000,30(1):65. [6]宋庆原;崔智林;华洪;等.;陕西富平晚奥陶世放射虫化石[J]
- The forming of Sichuan Basin was closely relation with ancient geography and geological structure. Besides Yushan salt spring of Pengshui belonged to Ordovician period, others were mainly distributed to the layers of Jurassic and Triassic period. 四川盆地盐矿形成与古地理环境和地质构造密切相关,除了彭水郁山盐泉来自奥陶纪地层外,其余主要分布于侏罗纪、三叠纪岩层。
- Online access to the museum's catalogues is provided including databases for fossils, the Cambrian period, the Ordovician period, rock specimens, and the MacCulloch database of geological specimens. 还有一些岩石标本及地质学标本。
- In order not to be late, she cut across the fields. 为了不迟到,她抄近路穿过田野。
- Enrichment of Au during the Ordovician period; 奥陶系富集Au;
- Chaucer wrote in the late mediaeval period. 乔叟写作的时代是中世纪末。
- It irks us to wait for people who are late. 等候迟到的人使我们厌烦。