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Affecting factors of preferential flow in the forest of the Three Gorges area, Yangtze River
      
In order to study the factors affecting preferential flow, a 2.9 m-long, 2.6 m-deep soil profile was dug in the Quxi watershed, Yangtze River.
      
Particularly, rugose coral fauna of the Sifengya Formation represent early Telychian rugosan fauna in the Upper Yangtze region and improve the sequences of early Silurian (Llandovery) rugose coral assemblages in Yangtze region.
      
In this study, thirty-six individuals of Acheilognathus macropterus were collected from the Heilongjiang River, the Yangtze River, and the Nandujiang River.
      
The samples from the Yangtze River scattered into clades 2, 3, and 4.
      
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本文在綜合研究宁鎮山脈象山羣岩层縐构造形态基本特征、分布規律和形成机理的基础上,专門論述了海西印支裡縐构造的基底断裂如何控制燕山盖层褶縐形成的具体表現方式,論証了燕山运动以块断运动为主的构造性貭,为进一步研究下揚子地区岩漿活动和成矿作用的空間分布規律提供了构造方面的依据。

The Hsuehfeng cycle of the region under discussion is taken as a stage of eugeosynclinal development. The eugeosytnclinal formational sequences are rich in volcanic rocks which have been folded into tight linear folds by the Hsuehfeng movement. The Hsuehfeng folded belt is responsible for the formation of the Kiangnan geanticline of the Caledonian cycle. The South Anhui geosyncline extends along the northern side of the Kiangnan geanticline and is filled with the miogeosynclinal formational sequences which have...

The Hsuehfeng cycle of the region under discussion is taken as a stage of eugeosynclinal development. The eugeosytnclinal formational sequences are rich in volcanic rocks which have been folded into tight linear folds by the Hsuehfeng movement. The Hsuehfeng folded belt is responsible for the formation of the Kiangnan geanticline of the Caledonian cycle. The South Anhui geosyncline extends along the northern side of the Kiangnan geanticline and is filled with the miogeosynclinal formational sequences which have vast thickness of more than ten thousand meters and consist of typical geosynclinal formations (flysch formation, graywacke formation, siliceous shale formation, etc.) with zonal arrangement. The geometric styles of folding in the South Anhui geosyncline are of linear complex folds the individual fold of which is either tight or open in form, which indicates the varied origin of the folded structure. On the basis of the above mentioned structural characteristics it is to be compared with the West Chekiang Caledonian geosyncline, Through comparative research and analysis of the South Anhui, Northwest Kiangsi and West Hunan Caledonian geosynclines bondering the northern side of the Kiangnan geanticline, the present writer has found that their similarities are rather obvious. Thus they form as a whole the belt of the marginal geosynclinal depressions. The South Anhui Caledonian geosyncline could be distinguished from the South Kiangsi Caledonian inner geosyncline by the following diagnostic features: (1) it has more abundant carbonate rocks in the sedimentary sequences; (2) it possesses comparatively open style of folding; (3) the trough of sedimentation migrates from the Kiangnan geanticline towards the platform throughout the early palaeozoic period; and (4) it displays weak regional metamorphism and igneous activity. Judging from the above-stated reasons, it is less mobile and displays the character of a residual geosyncline. The Shitai-Guogongtzang deep fault marks the boundary between the South Anhui Caledonian geosyncline in the south and the Lower Yangtze Pericratonic Subsidence zone, having the carbonate formation of platform type, in the north. During the Caledonian cycle the Nantian trough is superimposed upon the eastern part of the Kiangnan geanticline and distinguished from the South Anhui geosyncline by the incompleteuess of the sedimentary cycle, its paramolasse formation and the basin-shaped syncline. The Kiangnan geanticline broadly controls the formational and structural development of the South Anhui geosyncline and the West Chekiang geosyncline on both sides. Thus the South Anhui geosyncline together with the West Chekiang geosyncline and the Kiangnan geanticline constitutes a geosynclinal system which forms the northeastern section of the South China Caledonian geosynclinal region.

皖南南部构造性质及构造单元的归属的争论,在最近一次全国性编图会议,意见仍未统一。作者在实际调查材料的基础上,运用构造——建造分析和比较大地构造的方法研究了本区前寒武纪及早期古生代各时代建造成分,确定了各建造的名称、性质和空间分布特征,进一步划分出几个不同性质的建造序列;描述了不同时代地层和不同空间的构造形态,划分了构造层及构造形态的级别,並分析了构造形态形成的原因;论证了本区加里东运动的存在及其性质。在上述资料基础上,阐明了本区是华南加里东地槽区皖南浙西加里东地槽系的重要组成部分,並对皖南加里东地槽与其北隣的下扬子台缘沉陷带的界限予以确定,进一步说明了本区在加里东旋迴是冒地槽,具有残余地槽和边缘地槽拗陷的特性。

The profile of the Qing-Long Group(Middle-Lower Triassic) at the Shanjuan caverns, Yixing, Jiangsu, in which the features of petrography and the marks of lithofacies in every member are clear and obvious. is an ideal one in the eastern Lower Yangtze region. These limestones principally appear to be the facies of banks, tidal flats and tidal channels. It suggests that this region is located at the northeastern Jiangnan Rise that submerged in water at that time.

江苏省宜兴县善卷洞附近的青龙灰岩(中、下三迭统)出露完整,其中各岩性段岩性特征明显,是下扬子东部地区的较好剖面。本剖面的岩层主要反映潮坪、浅滩和通道相。当时,这一地区处于江南隆起的北东水下延伸带上。

 
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