middle ordovician meaning in English
中奥陶世
Examples
- Characteristics and origin of dolostones in yingshan formation , lower and middle ordovician , north of central tarim basin
塔中北部中下奥陶统鹰山组白云岩特征及成因 - The main controlled factors of heterogeneity of middle ordovician majiagou 51 - 4 reservoir in jingbian buried platform and its periphery area , ordos basin
4亚段储层非均质性主要控制因素 - This paper is a continuation of the papers on lithofacies palaeogeography of the early , middle and late cambrian and the early and middle ordovician
摘要本文是笔者等的中国早、中、晚寒武世和早、中奥陶世岩相古地理诸文的继续。 - From the late middle ordovician to the end of ordovician , the cephalopods , gastropods and corals in the erlangping trough , and the conodonts , coral , brachiopods , cephalopods as well as trilobites in the xichuan shelf were from the north china province
在中奥陶世晚期至奥陶纪末，二郎坪海槽的腹足类、头足类和珊瑚与浙川陆棚的牙形石、珊瑚、腕足类、头足类和三叶虫均属华北生物省。 - 2 . tazhong ancient uplift originated from normal fault in paleozoic , hydrocarbon formed in ordovician period , structure reverse made tazhong uplift form from the middle ordovician period to the late ordovician period , and it provided geologic background for the deposit of silurian - devonian stratum . tazhong uplift formed at the end devonian , ancient reservoir was destroyed and asphaltum sandstone formed , structure deformation more destroyed ancient reservoir in early permian , after then the major of structure deformation is regulation
塔中隆起源于早古生代拉张背景下的正断层，寒武-奥陶纪为其烃源岩形成的重要时期；早奥陶世末-晚奥陶世末的构造反转是塔中隆起的主要形成期，同时也为志留系形成地层及复合圈闭提供了古地理背景；志留?泥盆纪塔里木盆地南北缘均转为活动大陆边缘，形成了大量的断裂和不整合；泥盆纪末塔中鼻状隆起基本定型，古油藏遭受破坏，形成了沥青砂岩；早二叠世晚期的构造变形使古油藏遭受进一步的破坏；二叠纪后构造变动主要以调节为主。