ordovician period meaning in English
奥陶纪
Examples
- 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。 - The filling evolutionary process in the palaeozoic era in this area was extremely complex . during the majiagou stage of early ordovician period , the researched area went through three tertiary eustatic cycles . with negative movement in ma ; stage , deposits of evaporate platform and local platform were developed
古生代研究区经历了十分复杂的充填演化过程，早奥陶世马家沟期本区经历了三个三级海平面升降旋回，其中马5期随着海平面下降，发育了蒸发台地和局限台地沉积。