1.
Graphic correlation of graptolite fauna near the Lower/Middle Ordovician boundary in South China
华南下/中奥陶统界线附近笔石动物群的图形对比研究
2.
The Lower Palaeozoic group mainly includes Cambrian, medial and lower Ordovician, which are marine carbonate in the district.
下古生界包括寒武系和下、中奥陶统，主要由海相碳酸盐岩构成。
3.
It used to be considered that the Loushanguan Formation was composed of thick-bedded dolomite, which is very difficult for division.
传统上认为湘黔交界处的中寒武统—下奥陶统娄山关组为均一性极强的厚层白云岩，可分性极差。
4.
Characteristics of Middle to Lower Ordovician Dolomite in Central Tarim Basin and Its Origin
塔中地区中下奥陶统白云岩特征及成因
5.
THE LOWER TO MIDDLE ORDOVICIAN DAWAN FORMATION AND ITS COEVAL ROCKS IN THE YANGTZE REGION
扬子区下、中奥陶统大湾组及其同期地层
6.
Study on the Oil Seepages in Lower Ordovician of Yichang,Hubei Province
湖北宜昌下奥陶统生物礁中的油苗研究
7.
The Karst Log Response of Carbonate Rocks of Lower Ordovician in Tazhong Area,Tarim Basin
塔中地区下奥陶统碳酸盐岩岩溶测井特征
8.
Unconformity between the Lower Ordovician and Devonian in the Sanchakou area in the eastern part of the Lungmu Co, northern Tibet, China.
藏北龙木错东部三岔口地区下奥陶统与泥盆系的不整合界面
9.
The Ordovician Conodonts and the Cambrian-Ordovician Boundary at the Platform Facies in the Tarim Basin, China
塔里木盆地奥陶纪台地相区牙形石及寒武—奥陶系界线
10.
Hydrocarbon in the Ordovician petroleum accumulation system originated from the Cambrian and Lower Ordovician source rocks.
塔中低凸起奥陶纪油气成藏体系的源岩为寒武系及下奥陶统烃源岩 ;
11.
Palaeo-environment restoration of Upper Ordovician-Lower Silurian hydrocarbon source rock in Middle-Upper Yangtze area
中上扬子地区上奥陶统—下志留统烃源岩发育的古环境恢复
12.
GEOCHEMICAL CHARACTERISTICS OF MIDDLE CAMBRIAN-EARLY ORDOVICIAN LIMESTONE AND PALEO-OCEAN RECONSTRUCTION BASED ON δ~(18)O_(SMOW),~(87)Sr/~(86)Sr AND RARE EARTH ELEMENTS,TARIM BASIN
塔里木盆地中寒武统—下奥陶统泥晶灰岩地球化学与古海洋学
13.
The Research on the Tectonic Stress Field Numerical Simulation of Middle-lower Ordovician, in Tazhong Area, Tarim Basin
塔里木盆地塔中地区中下奥陶统构造应力场数值模拟研究
14.
STUDY ON SEDIMENTARY FACIES' TYPES AND DISTRIBUTION OF THE MIDDLE-LOWER ORDOVICIAN IN THE NORTH RAMP OF TAZHONG AREA
塔中北斜坡中下奥陶统鹰山组沉积相类型及分布研究
15.
Sedimentary Environment of Lower-Middle Ordovician Yingshan Formation in Mid-Western Tarim Basin
塔里木盆地台盆区中西部中下奥陶统鹰山组沉积环境研究
16.
A New Data on Determination of the Boundary between Cambrian and Ordovician in Tongren, Guizhou
贵州铜仁寒武系与奥陶系界线划分新资料
17.
Candidate for the Cambrian-Ordovician boundary stratotype of Newfoundland
关于纽芬兰寒武系-奥陶系界线层型候选剖面
18.
ON THE DISCOVERY OF NEWGRAPTOLITES FROM THE TUNGTZE FORMATION (LOWER ORDOVICIAN) IN GULIN OF SICHUAN
四川古蔺下奥陶统桐梓组笔石的发现