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- Early Ordovician strata 早奥陶世地层
- Marine volcanics of Early Ordovician was found in Zhifang region. 摘要纸房地区具有早奥陶世海相火山岩存在。
- Ordovician strata in Tahe oilfield belong to carbonate reservoir with well developed fractures and dissolution pores. 塔河油田奥陶系碳酸盐岩储集层裂缝普遍较发育,同时存在大量溶蚀孔隙。
- In this paper, the straticulate dolostone and spatulate dolostone in Lower Ordovician strata of Well Tazhong 1 were studied using petrologic and geochemical methods. 本文选择塔中地区塔中1井下奥陶统藻纹层白云岩与夹层竹叶状白云岩作为对象,应用岩石学与地球化学方法对其成因问题进行了研究。
- Abundant Early Ordovician fossils are identified in the western part of Sanchakou. 在龙木错北新发现志留纪地层;
- It means that the transgression in the Early Ordovician was more extensive than that in the Cambrian. 这表明早奥陶世的海进比寒武纪的更甚了。
- Two periods of high-pressure metamorphic belts, which have been dated 335.5 Ma and 440-460 Ma seperately by isotopic methods, have been discovered in the mid Cambrian and low-middle Ordovician strata. 同位素年龄分别为335.;5 Ma和440-460 Ma的两期高压变质带赋存于中寒武统和下中奥陶统中。
- The tectonic framework of North Qilian in Early Ordovician should be similar to that of the Bafin Bay and the Queen Elizabeth Islands. 北祁连早奥陶世海域与现在加拿大北部巴芬湾及伊丽莎白女王群岛的构造格局相似。
- Tazhong 45 reservoir, lying in the Middle-Upper Ordovician strata of Tazhong area, is a fluoritized carbonate reservoir.There exist many fluorite veins filled with crude oils in its reservoir bed. 摘要塔中45井油藏是位于塔中地区中上奥陶统碳酸盐岩地层中的一个油藏,其储层中发现有大量的被原油充填的萤石脉。
- According to evolutionary periods of paleokarst, three maps are drawn: Ordovician stratum thickness map, Pre-carboniferous karst landform and Ordovician top structure maps of Ordos Basin. 根据古岩溶的演化期次,分别编制了奥陶系地层厚度图、前石炭纪岩溶古地貌图及奥陶系顶面构造图。
- These 22 points are divided into two groups, which,represent respectiyely, two graptolite types in the early ordovician, namely, the South China type and the Central China type. 在平面图中,22个点可划分为2个点群,分别代表中国早奥陶世的两大笔石动物群,即华南型笔石动物群和华中型笔石动物群。
- Study on petrology, geochemistry and isotope chronology shows that the metallogenesis is closely related to granite-porphyry, which belongs to the Early Ordovician adakite formed in volcanic arc. 花岗斑岩与成矿作用关系密切,从岩石学、岩石化学、年龄学等方面对花岗斑岩进行了研究,认为花岗斑岩属于志留世早期形成于火山弧环境的埃达克岩。
- We started early in order to arrive before dark. 为了在天黑前到达,我们很早就动身了。
- CORRELATION AND ANALYSIS OF THE ORDOVICIAN STRATA AT THE SOUTH MARGIN OF THE ORDOS BASIN 鄂尔多斯南缘奥陶纪地层对比分析
- He come to the fore as a physicist at an early age. 他在早年就成了杰出的物理学家。
- I finished work unexpectedly early. 我的工作意外地提早做完。
- Study on Outcrop Sequence Stratigraphy of the Lower-Middle Ordovician Strata in Keping Tarim Basin 塔里木盆地柯坪地区中下奥陶统碳酸盐岩露头层序地层学研究
- We will get up early and do some housework. 我们将早起并且做点家务。
- Forgive me so early to call up you please. 请原谅我这么早给你打电话。
- This Greek dish is of a very early date. 这个希腊盘子是很早时期的制品。