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- Carboniferous period, the early gymnosperms (such as etc.) is very impressive, but the number of ferns most abundant. 石炭纪时,早期的裸子植物(如苏铁、松柏、银杏等)非常引人注目,但蕨类植物的数量最为丰富。
- In the Carboniferous Period, 360 million years ago, the greatest evolutionary innovations were the amniotic egg which allowed early reptiles to move away from waterside habitats and colonize dry regions. 在石炭纪期间,360百万年前,最巨大的演变创新是允许早期的爬行动物从海滨栖所行动和拓殖干燥地区的羊膜蛋。
- In Early Carboniferous, Tianshan mountains entered an intraplate evolution stage. 从石炭纪开始天山地区进入陆内演化阶段。
- The two early Carboniferous fragments are composed of Basalt and ash-black, fuchsia radiolaria silicalite, siliceous mudstone, tuff. 早石炭世两个断片由玄武岩和灰白色、紫红色放射虫硅质岩、硅质泥岩、凝灰岩组成。
- The flora reached its full flourish in the early Early Carboniferous and became extinct at the end of the Early Carboniferous. 拟鳞木植物群逐渐从泥盆纪植物群分离出来,繁盛于早石炭世早期,绝灭于早石炭世末期。
- With rapid burial in a moist anoxic environment, such as the coal swamps of the Carboniferous period, carbonaceaous films of plant material like fern fronds may survive. 迅速埋藏于潮湿的缺氧环境下,正如媒在石炭纪沉没,类似蕨类植物的含碳植物材料即可能存活下来。
- The individual systems tracts of each sequence are discussed in detail,and sequence stratigraphic framework of Devonian to Early Carboniferous is constructed for the study area. 详细分析了每个层序各体系域的特征并建立了层序地层格架。
- Their formation time was not later than Early Carboniferous (C 1), and the emplacement took place before the formation of Late Triassic Yiwanshui Formation (T 3 y ). 其形成时代不晚于早石炭世(C1),侵位在晚三叠世一碗水组(T3y)之前。
- Further sea-floor spreading led to the occurrence of oceanic crust in Babu Basin and the Nanpanjiang Sea exceeded beyond 20 latitudes from north to south in Early Carboniferous. 进一步的海底扩张导致早石炭世时八布海盆出现洋壳,南盘江海成为南北超过20个纬度的小洋盆。
- During the end of the Devonian and the early Carboniferous, sea water was invaded again, a new transgress overlap was turned up, and a set of Donghe sandstone was widespread. 在泥盆纪末期至早石炭世早期,又出现了一次新的海水侵入,发育了分布广泛的东河砂岩。
- The Carboniferous Period. 石炭纪,石炭系
- While from west to northeast the average values of 87 Sr / 86 Sr are increasing in plane,indi cating that the marine transgression during the Carboniferous period happened in direction from west toward east. 平面上由西向东北方向87Sr/86Sr比值增大,说明石炭纪海侵是由西向东侵入的。
- The lamellibranchiiiata fossils and coral fossils of Upper Carboniferous period had been discoveried in the detrital rock and carbonafite rock by the geologic survey of the area of Yishenjilike mountain. 摘要通过对伊什基里克山特克斯达坂一带地质调查,首次于该区发现了一套含晚石炭世双壳、珊瑚、腕足及植物化石的碎屑岩。
- There are great bifurcations as yet on the structural environment and on the evolution of the Xingmeng Paleozoic orogenic belt in Southeast Inner Mongolia during the Carboniferous Period. 内蒙古东南部古生代造山带在石炭纪时期的构造环境和构造演化,至今在认识上存在较大的分歧。
- Therefore, the Cathaysia, Euramerica, Angara and Gondwana floras were derived from an identical Lepidodendropsis flora of the Early Carboniferous, but they were developed in different environments respectively. 因此,华夏植物群、欧美植物群、安加拉植物群和冈瓦纳植物群衍生于早石炭世全球一致性拟鳞木植物群,但它们各自发展在不同的环境中。
- The Karamaili Ocean was closed during the end of Middle Devonian.Post-collisional within-plate extension started since Early carboniferous, accompanied by rifting and formation of rift troughs. 早石炭世进入碰撞期后板内伸展阶段,形成一系列裂陷槽和裂谷,晚二叠世开始进入陆内造山阶段。
- Thus, Shaodong Formation is consistent with global transgression of basal Carboniferous as proposed by Johnson in 1982, and the Shaodong Formation may belong to the Early Carboniferous. 因此邵东组及其底部的海侵与Johnson(1982)所提出的石炭纪底部全球性海侵事件一致,据此可认为邵东组形成时代可能仍属早石炭世早期。
- It is dominated by Dictyotriletes (20. 5%), Dycospora(16. 3%),Dibolisporites(9. 7%) and Reliculataspores (8. 5%). The geological age is assumed to be Early Carboniferous Tournaisian. 组合中以Dictyotriletes(20.;5%25),Lycospora(16
- During the amalgamation, the western and northern parts joined together earlierly, and formed the continent by the uplift in the early Hercynian orogeny in the late Early Carboniferous. 其中西、北两区拼合较早 ,早石炭世末的早海西运动时抬升成陆 ;
- Volcanicity was violent during the Early Carboniferous in Santanghu region.The volcanic rocks consist of basalts,andesites and dacite liparite,with andesites playing the main part. 三塘湖地区早石炭世火山活动强烈,发育以安山岩类为主的玄武岩、安山岩、英安流纹岩的岩石组合。