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低位
相关语句
  low-positional
    Geophysical feature of special low-positional geo logic bodies in minor faulted lake basin: case of Miyang sag.
    小型断陷湖盆特殊低位地质体地球物理特征研究——以泌阳凹陷为例
短句来源
    The original depositional environment was characterized with low and gentle depression and humid climate which are favorable for the development of low-positional marshland and lake where the oil-prone organic materials were accumulated with large volume;
    ②原始沉积环境呈低缓洼地,并具备潮湿气候,有利于近湖低位沼泽与大量易生烃母质的发育和堆积;
短句来源
  low-stand
    Exploration of Eogene low-stand fans at the gentle slope of Chexi depression.
    车西洼陷缓坡带下第三系低位扇勘探
短句来源
    Fault break-slope and low-stand fan sequence in Dongying Sag
    东营凹陷深陷期构造坡折带与低位扇序列
短句来源
    The study about Sq1 show that : the low-stand system tract(LST) are characterizeddelta front subfacies recognized several microfacies ,include underwater distributarychannels, debouch bars and sheet sands.
    层序 I 的低位域(LST)是一套三角洲前缘沉积,从曲线上可识别出水下分流河道、河口坝席状砂等微相;
短句来源
    Study shows thatthe architecture of sequence in the Pemo-carboniferous epicontinental coal-accumulatingbasin in North China is“dualistic pattern”,that is,“transgrassive-highstand”,lack of low-stand system tracts.
    研究表明,华北石炭二叠纪内陆表海聚煤盆地的层序结构为“二元结构型”,即“海侵-高位”,缺少低位体系域。
短句来源
    Fan deposits such as underwater fan and basin bottom fan that developed in the low-stand system tract of sequence H_2 2-H_3 1 cut directly into deeper mudstone of lake facies and had supreme source conditions with faults as good hydrocarbon conducting systems.
    在H22 —H13 层序低位域发育水下扇、盆底扇等 ,这些低位砂岩复合体直接插入较深湖相泥岩中 ,油源条件好 ,断层是良好的油气输导体系。
短句来源
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  low stand
    LOW STAND SYSTEM TRACT SANDSTONE IN THE SEQUENCE OF EPICONTINENTAL SEA IN ORDOS:A CASE OF QIAOTOU SANDSTONE OF UPPER TAIYUAN FORMATION
    鄂尔多斯陆表海层序地层中的低位域沉积——以太原组上段桥头砂岩为例
短句来源
    Axialchannel and delta are foremost field for coarse deposits because either high stand or low stand coarse sediments are easy to remain on these fields.
    轴向水道和轴向三角洲是发育粗粒砂沉积物的最重要领域,因为该地带的粗粒沉积无论是高位还是低位期形成均可较好的保存下来; 而缓坡带和陡坡带的高位体系域的粗粒沉积大多受沉积后改造侵蚀而难以保留或保留不全。
短句来源
    Low stand delta depositional system, lowstand fan depositional system and dry brine lake depositional system are mainly developed in the lowstand system tract.
    湖侵.湖退体系域。 低位体系域主要发育低位三角洲沉积体系、低位扇沉积体系、千盐湖沉积体系。
短句来源
    Low stand delta sand body and lowstand fan sand body are the most favorable ones for oil and gas exploration, and highstand delta sand body, highstand sublacustrine fan sand body, braided river sand body and fan-delta sand body are secondary.
    低位三角洲砂体、低位扇砂体是油气勘探最有利的砂体,其次是高位三角洲砂体、高位湖底扇砂体、辫状河砂体、扇三角洲砂体。
短句来源
    It is generally supposed that in the Ordos Basin the sequence of the epicontinental sea is mainly composed of transgressive system tract and high stand system tract, without low stand system tract or only with low stand system tract on the continental margin.
    鄂尔多斯缓坡型陆表海的层序构成通常以海侵和高位体系域为主 ,低位体系域发育在古大陆边缘或缺失。
短句来源
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  “低位”译为未确定词的双语例句
    New Method of Measuring the Heat of Combustion and Thermochemical Correction of Peat of Low Quality
    低位泥煤燃烧热测定新方法及热化学校正
短句来源
    Eroded valley-topogenetic lowstand fan sendimentary system in north slop of Biyang depression and its significance in oil and gas exploration.
    泌阳凹陷北坡下切谷—低位扇沉积体系及其油气勘探意义
短句来源
    ORIGIN OF LOWSTAND FAN IN FAULTED-TOPOGRAPHIC BREAK & PLAY'S CHARACTERISTICS
    断裂坡折带低位扇成因及成藏特征
短句来源
    A NEW DISCUSSION ON LOWSTAND DEPOSITION MODELS IN YING-QIONG BASIN
    莺-琼盆地低位沉积模式的新探讨
短句来源
    The spatial assemblage characteristics of the lowstand system tract and their occurrence with oil and gas, Baodao-Songtao Sag, South China Sea Basin
    南海盆地宝岛—松涛凹陷低位体系域时空组合特征及其与油气赋存关系
短句来源
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  low-stand
Morphological features such as emerged and submerged terraces and wave-cut notches, as well as modern and dated fossil coral reefs along the coasts of the Red Sea in southern Sinai, provide a record of ten high-and low-stand sea-level events.
      
The progressive widening of the Adriatic epicontinental shelf, up to seven times its low-stand extent, also determines variations in the style of transgressive deposition by controlling major changes in oceanographic circulation.
      
The Younger Dryas draw down of the Black Sea starts at about 13.3 to 13?kyr?BP, with a maximum low-stand of 104?m at 11.5?kyr?BP.
      
Low-stand fluvial sheet sandstones characterized by non-cyclic sequence development and high facies stability occur, especially in the Neocomian and early Turonian.
      
We interpret the aeolianite and low-stand wedge as expressions of falling base level associated with ice-sheet growth at higher latitudes.
      
  low stand
During the last low stand of sea level, rivers and streams drained across the present northwestern Gulf of Mexico continental shelf depositing sediments in several shallow-water deltas near the present shelf-slope boundary.
      
During periods of low stand, more material is eroded from the continental shelf than during high stand, and it is deposited in the deep sea, in turn loading the Miocene salts and activating diapirism.
      
Post-caldera pantellerite lavas associated with an ~ 114-ky-old caldera erupted along the ring-fracture zone during a major low stand of sea level at about 67 Ka.
      
During reservoir low stand in winter, the hyporheic-hypolentic zone contains water from Ledbetter Creek and groundwater separated by an interface at ~10?cm below the channel bottom.
      
This article reviews and updates the geophysical and paleoecological evidence for lake-wide desiccation and describes the environmental conditions that aquatic species likely experienced during the low stand.
      
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According to the analysis the all sporo-pollen paleovegetation dynamical association in medial latitude area, a . general sporo-pollen paleovegetation dynamical association mode to cold-warm paleoclimate cycle in Quaternary Period at a certain section can be drawn as follows; A sporo-pollen paleovegetation dynamical association in cold period consists of such parts: the middle bed where sporo-pollen paleovegetation association is that of farther north in 1atitndo(on plains)or still higher in level (in mountains)...

According to the analysis the all sporo-pollen paleovegetation dynamical association in medial latitude area, a . general sporo-pollen paleovegetation dynamical association mode to cold-warm paleoclimate cycle in Quaternary Period at a certain section can be drawn as follows; A sporo-pollen paleovegetation dynamical association in cold period consists of such parts: the middle bed where sporo-pollen paleovegetation association is that of farther north in 1atitndo(on plains)or still higher in level (in mountains) than the section above and below which are beds of sporo-pollen associations which are farther south in latitude (on plains) or even lower in level (in mountains) than in the middle bed, successively and symmctr.ically displ.y on both sides of the middle bed. A sporo-pollen paleovegetation dynamical association in warm period consists of such parts: the middle bed where sporo-pollen paleovegetation dynamical association is farther south in latitude (on plains) or even lower in level (in mountains) than the section, above and below which are beds of sporo-pollen associations which are farther north in latitude (on plains) or still higher in level (in mountains) than in the middle bed, succesively and symmetrically display on both sides of the middle bed.

通过对中纬区完全孢粉植被动态组合规律的分析,可以推导出某一地区沉积剖面中第四纪冷暖气候旋回的孢粉植被动态组合,其方式是:冷期孢粉动态组合,以比该区更北(平原)或更高位(山地)的孢粉植被为中间层,其上下依次对称出现比中间层更南(平原)或更低位(山地)的孢粉植被组合;暖期孢粉植被动态组合,以比该区更南(平原)或更低位(山地)的孢粉植被为中间层,其上下依次对称出现比中间层更北(平原)或更高位(山地)孢粉植被组合。

In this paper, the phases of the solid tidal stress for 104 earthquakes(M≥4(3/4)), given the focal mechanism solution and occurred insouth-wester China, have been calculated and their phases have been classified and studied according to focal stress field.The results show that: There is a certain correlation between the earthquakes and tidal hydrostatic stress for the normal fault type, while the eaethquakes have anapparent correlation with the maximum tidal shear stress for the strike-slip and thrust fault...

In this paper, the phases of the solid tidal stress for 104 earthquakes(M≥4(3/4)), given the focal mechanism solution and occurred insouth-wester China, have been calculated and their phases have been classified and studied according to focal stress field.The results show that: There is a certain correlation between the earthquakes and tidal hydrostatic stress for the normal fault type, while the eaethquakes have anapparent correlation with the maximum tidal shear stress for the strike-slip and thrust fault type. For three types of earthquake of strike-slip and thrust fault with different direction of principal compressive stress axes, the characteristics of the phase of solid tidal stress along the dislocation vectors of fault are quite different. The earthquakes with principal compressive stress axes near N-S and E-W direction express correlation with the solid tidal stress along the dislocation vectors of fault. There is an optimal distribution of higher phase for the former type, but an optimal istribution of lower phase for the latter type.The above results reflect that the relation between earthquake and earth tides is directly depending upon the focal stress field, and the mechanism of triggering earthquake by tidal stress are different for the different types of stress fieid,

本文计算了我国西南地区给出断面解的104个(M≥4(3/4))地震的潮汐应力位相。按震源应力场分类进行研究结果表明:正断层地震与潮汐流体静应力有一定相关性。走滑和逆断层地震与潮汐最大剪应力有明显关系。三类主压应力轴方向不同的走滑、逆断层地震,其沿断层错动矢量的潮汐剪应力位相特征不同;主压应力轴近南北走向和近东西走向的地震与沿断层错动矢量的潮汐剪应力有关,前者具有高位相的优势分布,后者具有低位相的优势分布。上述结果反映地震和潮汐的关系与地震震源应力场存在直接的关系;地震震源应力场不同,潮汐应力对地震的触发机制也不同。

Panxi Rift with the dome-shaped volcano pattern has undergone three evolutionary processes: the lithosphere dome by mantle bulge, the continental crust dome and the subvolcano-dome. With the dome structure developing, the magmatism gradually evolved from deep-seated matle source, mid- hypabyssal mantle source assimilated and contaminated by the continental crust to super-hypabyssal mantle source mixed with the crust. So we believe that there exist two-times magma chambers of lower, middle and high seats under...

Panxi Rift with the dome-shaped volcano pattern has undergone three evolutionary processes: the lithosphere dome by mantle bulge, the continental crust dome and the subvolcano-dome. With the dome structure developing, the magmatism gradually evolved from deep-seated matle source, mid- hypabyssal mantle source assimilated and contaminated by the continental crust to super-hypabyssal mantle source mixed with the crust. So we believe that there exist two-times magma chambers of lower, middle and high seats under the Rift during the developmental stage of the Rift with dome-shaped volcano pattern. The primary magma rising to the surface from the magma source had suffered stagnation, tractional crystallization and assimilative hybridization of the continental crust in chambers at different depths, therefore it might have produced different paragenetie association types of the equilibrium minerals and different trends of the magmatie differentiation. Panxi Rift belongs to undeveloped type but with longer evolutionary time. It has a geological history about 200 million years(418-210Ma), evolving from the lithosphere dome by mantle diapir (O-S)-the coatinental crust dome (D-C) -the continental crust fracture(P)-the subvolcano dome (P_2-T_1), and incurring Early Permian Yangxin transgressive. During short quiet periods of magmatic activity once occurring it would have conduced to the complete process of the crystallizing differentiation in the deep-seated magma source, the liquid-phase immiscible separation under the lower pressure condition(<5×10~8Pa)and the assimilating contamination by the continental crust, and finally, becoming"a model of double-peaking" magma association.Emeishan basalts widely distributed over Yunnan, Guizhou and Sichuan Provinces are richer in K, Rb, Ba, Th than in Sr, which is the evidence of the mantle concentration. In Panxi Rift the magmatism can be traced back to the initial magmatic action, that is, it produced Guizhou phlogopite kimberlite in Devonian. The kimberlite is a product metasomated by the mantle with high-pressure phase phlogopite and initial fluid, which is the evidence of the mantle metasomatism. All these indicate that the tectonicsmagmatism of Panxi Rift is the model of the deep magma genesis, the main motive power of which came from the rising diapir of a strong metasomasis-concentration mantle. Thus, Panxi Rift should be considered as a initiative type of Rift.

本文主要讨论穹窿-火山型攀西裂谷的成因,岩浆深成作用与火山作用过程;穹窿构造的发生、发展的演化历史;岩浆分异趋势及双峰式岩浆演化系列及其成因。 攀西裂谷曾经历了岩石圈穹窿—陆壳穹窿一次火山穹窿三个发展演化阶段。碱性岩浆作用与地壳隆升、地幔去气、热流汇聚作用有着密切的成因联系,成穹作用最盛,岩浆碱度最高。随着陆壳破裂、开放、挥发分散逸,岩浆性质从强碱质—弱碱质—碱酸性转化。 穹窿构造的发展演化阶段有机地控制了岩浆源和二次岩浆房的深度和岩浆演化特点,随着穹窿构造的发展演化,岩浆活动由深成幔源→中浅成幔源加陆壳轻微混染→超浅成壳幔混合源逐渐演化,因而可以认为:穹窿-火山型裂谷发育的各个阶段,存在有低位→中位→高位的二次岩浆房。 攀西裂谷属不发育的夭折裂谷,以演化时间长为特点,有利于岩浆深源(二次岩浆房内)结晶分异、液体不混容性分离作用和陆壳的同化混染作用等得以彻底进行,最终形成“双峰式”岩浆组合。

 
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