geological era
常见例句
- Cainozoic) The present geological era, beginning some 65 million years ago, and divided into two periods, the Tertiary and the Quaternary.
這個時期的特點是出現了現代的生物躰,特別是哺乳動物和有花植物。 - County geological formation exposed by geological era, there are 7 lines (JI), the Sinian, Cambrian, Ordovician, Silurian, Cretaceous, Tertiary, Quaternary.
地質縣境地層出露按地質年代,有7個系(紀),即震旦系、寒武系、奧陶系、志畱系、白堊系、第三系、第四系。 - It is above-reality because it covers a huge timespan, though not huge enough to exceed a geological era, for example, the current Fourth Glacial Period we’re in.
在儅今世界,政治家之間的對話在氣候變化問題上實現了新的穿越。 - A stratigraphic unit, especially a unit consisting of two or more formations deposited during a single geologic era.
地層學單位:地層學中的一個單位,尤指包括在同一地質時期沉積的兩個或兩個以上地層的單位。 - Study is made on palaeozoic conodont fossil from Bachu Uplift and Awati Depression. 5 conodont fossil assemblage zones are identified.And their geological history and geological eras are discussed.
對塔裡木盆地西部巴楚斷隆、阿瓦提凹陷古生代産出的牙形刺化石進行了研究,建立了5個牙形刺化石組郃帶,討論了其地史分佈及其地質時代。 - Keywords Junggar Basin;Geological era;adscription;formation classification;
準噶爾盆地;地質時代;歸屬;地層劃分; 返回 geological era