precambrian 中文意思是什麼

precambrian 解釋
adj. 形容詞 【地質學;地理學】前寒武紀的。
n. 名詞 〈the Precambrian 〉 前寒武紀。

  1. Eight aspects related to the study of early precambrian metamorphic stratigraphy are dealt with in this paper : general situation of the study ; complexity of the stratigraphy and difficulties of the study ; thoughts and methods of the study ; division of rock suite, rock group and complex rock ; researches on important regional discordances ; types and characteristics of protolith and recovery of palaeoenvironment ; correct differentiation of the metamorphic strata, ttg rock system and other metamorphic plutonic rocks ; determination of the ages of the metamorphic strata

    摘要主要論述了與早前寒武紀變質地層(學)有關的8個方面的問題:早前寒武紀變質地層的研究概況;早前寒武紀變質地層的復雜性和研究難度;早前寒武紀變質地層研究的思路和工作方法;早前寒武紀變質巖石地層單位巖群、巖組和雜巖的劃分問題;重要區域性不整合的研究;鑒定變質地層的原巖類型、巖石性質和恢復古環境;正確區分變質地層和ttg巖系以及其他變質深成巖;變質地層時代的確定。
  2. The texas state capital sity straddles the line between two geologic provinces - to the west is the uplifted plateau of cretaceous limestones and exposed precambrian llano uplift, while the lowland bladk prairie country stretches eastward for miles

    西部是白堊質的石灰石突起的高處地帶和暴露的precambrian llano突出處,而低處的black prairie直向東部擴展數里。
  3. Geochemical characteristics of precambrian metamorphic rocks in north wuyi region

    北武夷地區前寒武系變質巖地球化學特徵
  4. On precambrian framework and evolution of the qinling belt

    一種海溝向洋後退的殘余弧后盆地演化模式
  5. The precambrian strata of jilin province

    吉林省前寒武紀地層
  6. Precambrian tectonic deformation and its evolution in ludong orogenic belt china

    中國魯東造山帶前寒武紀構造變形及其演化
  7. Tectonic framework of north china block and its cratonization in the early precambrian

    華北陸塊基底構造格局及早期大陸克拉通化過程
  8. Early precambrian basement and metallogenetic series in eastern heilongjiang province

    黑龍江省東部早前寒武紀基底及礦床成礦系列劃分
  9. Among them the precambrian and cenozoic eras are the main metallogenic epoches in the world

    就全球而言,前寒武紀和新生代是金礦的重要成礦期。
  10. History and current status of study on stromatolitic nomenclature and classification in the precambrian

    前寒武紀疊層石命名和分類的研究歷史及現狀
  11. Chemical fossils ( e. g. alkanes and porphyrins ) are often the only evidence for life in rocks of precambrian age

    化學化石(烷烴和卟啉)是前寒武紀地層中生命存在的唯一證據。
  12. The first three eons, which together lasted nearly 4 billion years, are grouped into a unit called the precambrian

    第一三永世,一起持續幾乎4十億年,被編組入單位稱全寒武紀。
  13. Stratum composition in xiaoqinling represents early precambrian crystal basement and mesoproterozoic era cover rocks of the typical north china craton

    小秦嶺區內地層具有典型華北型早前寒武結晶基底和中元古代以來的蓋層結構,不發育晚古生代、中生代構造層。
  14. The basement of the basin is consist of precambrian crystal basement and paleozoic folding basement, while the cover has undergone the evolution of intra - continental rife in permian, down warped basin in triassic - cretaceous period and inter - mountains basin in tertiary. the main sediments are huge - thick volcanic rock, shallow intrusive rock and tuff in early permian, dark mudstone, marl and muddy dolostone in lucaogou formation in middle permian, huge thick volcanic rock, intruder in tiaohu formation in middle permian, miscellaneous sandy gravel, sandstone and gray mudstone in triassic ( the red is under the gray, and huge - thick dark gray, gray sandy gravel, sandstone, mudstone with coal layer in jurassic

    盆地基底由前寒武紀結晶基底和古生代褶皺基底組成,盆地蓋層則經歷了二疊紀的裂谷盆地、三疊紀?白堊紀的坳陷盆地和第三紀后的山間盆地的演化過程。盆地主要沉積了下二疊統巨厚火山巖、淺成侵入巖和凝灰巖;中二疊統蘆草溝組的暗色泥巖、泥灰巖、白雲質巖石以及條湖組的巨厚層火山巖、侵入巖;三疊系雜色砂礫巖、砂巖及灰色泥巖(下紅上灰) ;以及侏羅紀厚層深灰、灰色砂礫巖、砂巖、泥巖夾煤層。
  15. Precambrian madiyi formation in banbianshan, taojiang of hunan province is consisted of deep - water gravity flow deposits, deep - water traction current deposits and deep - water in situ deposits

    摘要湖南桃江半邊山前寒武紀馬底驛組為一深水重力流沉積、深水牽引流沉積與深水原地沉積共生組合。
  16. With the geological evolution in precambrian, minerogenetic materials and types of mineral deposits obviously varied and increased

    隨著中國前寒武紀地史的演化,成礦物質種類和礦床類型具有明顯的變化和增多。
  17. The term of the previous precambrian metallogenic domain is not adopted, and the precambrian metallogeny should be discussed as the metallogeny of the basement in the relevant paleo - asiatic, qinling - qilian - kulun and tethys metallogenic domains

    對於前寒武紀成礦作用地區,文章不以「成礦域」稱之,其成礦作用置於古亞洲、秦祁昆和特提斯諸成礦域中以基底成礦作用方式討論之。
  18. And, at several spots on the planet, the ediacaran lagerst ? tten, named after the ediacara hills of australia where the first example was found, harbor strange precambrian soft - bodied fossils and animal burrows, including evidence for early bilaterians

    而分佈在地球上數個地區的艾迪卡拉特異埋藏點(命名自首次發現的澳洲艾迪卡拉山) ,裏面藏有奇妙的前寒武紀軟體化石與蟲穴,包括早期兩側對稱動物的證據。
  19. It is believed that the distribution of gold deposits in fujian is controlled by regional deep - seated structure and precambrian volcanic flysch formation containing charcoal is main gold source rock. the accumulation of gold is closely related with yanshan granitic magma intrusion

    金礦空間分佈受一定的區域深部構造單元所制約,前寒武系富含炭質的火山復理石建造是福建省金礦的主要礦源巖,金的富集成礦與燕山期花崗巖類巖漿侵入作用密切相關。
  20. In the new plan, the position of the studied strata in the stratigraphic column of late precambrian of china shows an impotant relation between sinian system and qingbaikou system on the geologic and biologic evolution

    新方案中這些地層在我國晚前寒武紀地層柱中的位置,反應出了震旦系與青白口系的地史演化及生物演化間的重要關系。
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