地幔流 的英文怎麼說

中文拼音 [demànliú]
地幔流 英文
mantle current
  • 幔 : 名詞（遮擋用的簾子） curtain; screen
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  1. Finally, some possible physical mechanisms, for example the coulomb stress - triggering mechanism, the dynamic stress - triggering mechanism and the lower crust and upper mantle flow deformation mechanism, which may generate these coseismic and post - seismic anomalies, are discussed

    同時，還從庫侖破裂應力觸發、動態應力觸發以及下地殼和上地幔流動變形機制等方面，對這些大震效應作了一些成因機理討論。
  2. Secondly, based on the microbeam analytical technique, on the one hand, through investigating the characteristic of major elements in the mantle minerals the author acquired the static information from mantle ; on the other hand, through multi - point analysis of a part of the minerals from mantle, the auther got dynamic information from mantle. finally, generalizating the fruits of this study and predecessors, the autor holds that the constituents of lithospheric mantle possibly includes spinel lherzolites, clinopyroxenites, websterite, dunite, harzburgites, garnet lherzite, phlogopite lherzite, eclogites, clinopyroxene megacrysts ; compared with east china and north china platform, the research field mantle shows the characteristics of higher degree of partial melting processes and more depleted mantle ; the. upper mantle beneath north hetian area is heterogeneous, with a tendency of deficit in a12o3 and lree from kaliyang in west hetian to the river basin of kalakshi river and yulongkashi river ; the subduction of the crust beneath north hetian has ever occurred in geological history and caused the mixing of mantle - crust ; the depth of the origination of basaltic magmas beneath north hetian exceeds 73km ; the thickness of the lithosphere beneath the research area amounts to 204. 9km ; the mantle beneath north hetian has geological condtions for forming diamond deposits

    最後，綜合本區幔源礦物和地幔巖石的特徵以及地球物理資料，得出如下結論：本區上地幔的物質組成有尖晶石二輝橄欖巖、二輝巖、單斜輝石巖、純橄欖巖、方輝橄欖巖、石榴石二輝橄欖巖、金雲母二輝橄欖巖、榴輝巖；與中國東部以及華北地臺上地幔相比，研究區上地幔具有富集主元素中相容元素和虧損其中的不相容元素的特徵，局部熔融程度較高；上地幔存在橫向和縱向的不均一性，從西部的克里陽到喀拉喀什河和玉龍喀什河流域， al和lree富集程度呈下降趨勢，不同來源的相同礦物中主元素的含量差異較大；地質歷史時期這里可能發生過地殼俯沖並產生殼幔混合作用；玄武巖漿的起源深度73km ；從幔源重砂礦物的溫壓估算結果，可以推斷出巖石圈厚度可達204 . 9km ；綜合巖石圈物質組成特徵、巖石圈熱狀態、地幔溫壓狀態、氧逸度以及幔源巖石和幔源礦物的化學成分，認為研究區具備了金剛石成礦地幔地質條件。
  3. The transitional group of diabases have intervenient sig, feg, tig, indicative of in - between melting degrees and melting depths. the highest nag in thes e rocks tend to suggest that na behaved as a moderately incompatible element during magma generation, thus preclude the possibility for residual jadeite to host na

    所有的觀察事實反映徐州地區晚元古代輝綠巖來源於具有不同深度、不同富集程度的nd同位素虧損地幔，因此最好的解釋模式就是它們為地幔柱沖擊作用下巖石圈-軟流圈-地幔柱相互作用的產物。
  4. The mesosphere comprises the rest of the mantle below the asthenosphere.

    中間圈包括巖流圈以下地幔的其餘部分。
  5. The pges abundance patterns of residual mantle rock with a peleo - subduction background is characterized by pd, pt depletion and ir, ru relatively enrichment, while the basalt and basic dyke by the processing of partial melt in the same background take an opposite feature of pd, pt enrichment and ir, ru depletion. the existence of fluid in the subduction zone increases the degree of partial melt on the one hand, and on the other, activates the activity of pd, pt compare to ir, ru, and thus reduces the pd ir and pt ru in residual mantle rock. the pges patterns for basalt and basic dyke from two carboniferous volcano zones to south qoltag and north turpan - hami basin, xinjing uigur autonomous region, take a shape of gentle positive inclined curve with lower pt and pd differentiation and lower pges. all these features are obviously different from that of basic dyke and basalt from typical ophiolite and therefore the author believe that their fluid - rich paleo - subduction zone environment can be ruled out

    古俯沖帶背景下的殘餘地幔巖的pges配分以pd ， pt明顯虧損和ir ， ru相對富集為特徵，而部分熔融產物的玄武巖和基性巖脈則呈現相反的ir ， ru明顯虧損和pd ， pt相對富集特徵。俯沖帶中流體的參與一方面增加了部分熔融程度，有利於pd ， pt從原始地幔進入熔融相另一方面，流體的作用使得pd ， pt相對于ir ， ru遷移活動性效率提高，造成地幔巖中
  6. The trace element compositions and sr - nd isotopes suggest that the upper mantle beneath the studied area were subjected to multiple episodes of metasomatism, probably by small melt fractions derived from the asthenospheric mantle

    微量元素和sr - nd同位素特徵表明該區上地幔經歷了多期地幔交代作用，交代介質可能是源自軟流圈的小體積熔體。
  7. Through the study of characteristic of macroelement, microelement, rare - earth element, oxyhydrogen isotope, sulfur isotope, lead isotope, fluid inclusion etc, a conclusion can be drawn that metallogenic substance comes from the upper mantle with mixing of some substance from the upper crust latter. it is likely to have the same source with the surrounding rock

    通過對礦床的常量元素、微量元素、稀土元素、流體包裹體特徵、氫氧同位素、硫同位素、鉛同位素等特徵的研究，認為成礦物質主要來源於上地幔，與周圍巖石存在著同源的可能性，後期有一定的上地殼物質混入，成礦作用有三期，分別與區內的花崗巖、二長花崗巖脈、雲煌巖脈有關。
  8. The southern hainan mafic dykes are strongly enriched in lile with high nb / ta ratios, indicating a magma source reconstructed by silicic - melt through partial melting of ancient subducted slides. however, the northern hainan mafic dykes with chondritic nb / ta ratio should be derived from the fiuid - metasomatized mantle related to ancient subduction zone

    瓊南基性巖脈強烈富k _ 2o等lile和具有較高nb ta比值，其地幔源區應受到了古俯沖板片部分熔融形成的硅質熔體的改造；而瓊中基性巖脈的nb ta比值接近於球粒隕石和morb值，應為古俯沖帶含水流體交代的地幔源區的產物。
  9. Yet even at great depth, the mantle remains an exceedingly viscous fluid, flowing ever so slowly even in response to extreme pressures

    然而即使在極深處，地幔仍保持非常粘滯的液態，即使是在極度的壓力下流動也十分緩慢。
  10. Partial melting of the enriched lithospheric mantle owing to a raised geotherm caused by lithosphere thinning and following the afc process resulted in the formation of the quannan and tabei syenites in southern jiangxi

    隨著拉張作用加強，受軟流圈物質交代過的巖石圈地幔的小比例部分熔融形成的高鉀堿性巖漿經afc作用形成堿性雜巖（全南和塔背巖體） 。
  11. The continental orogenesis is characterized with the following features, such as sudden start, global synchronicity and horizontal movement, occurring mainly in the upper part of the crust and weakening with depth, and so on

    摘要大陸皺造山運動具有突發性、全球同步性，以水平運動為主，主要表現在地殼上部且具有上強下弱等特徵，除水平運動一項外，與基於地幔對流的板塊構造理論缺少共同之處。
  12. Alkali basite, which came from upper mantle or lower crust, invaded through those structure, which not only bring cu et al mineralizing elements, but also the most important is that thermal energy. it cycled the formation water ( yinmin fonnation and luoxue formation ), and form alkali - rich, middle - high temperature and salinity fluid mixed with alkali - rich magmatic water. there were high rate of percolation and well voidage in the contact zone between yinmin purple stratum and yinmin rubblerocks, which is in favor of the transposition and mineralization of minerogenetic fluids

    因此，總結東川稀礦山式銅礦成礦模式為沉積（ fe 、 cu ） ?熱液疊加（ cu ）改造：晉寧-澄江期，小江深大斷裂發生走滑運動，在東川礦區造成右行旋扭及其派生構造，形成「 z 」字形落因破碎帶，同時來自深源（下地殼或上地幔）堿基性巖漿侵入，不僅帶來了大量cu等成礦物質，更重要的是提供了熱源，促使地層水（落雪組白雲巖和因民組紫色層）循環，與富堿（ na和k ）巖漿水混合，形成富堿中高溫高鹽度流體。
  13. These anomalies might be due to the temperature variation of subsurface fluid that caused by transmission of long cycle waves through upper mantle or asthenosphere before the earthquake

    水溫異常出現的原因可能是由於地震前的長周期波通過上地幔或軟流層傳播，間接地導致了地下流體溫度發生了微小的變化。
  14. The effects of ssc ( small - scale sub - lithospheric convection ) on seafloor topography are investigated by formulating a 2d thermal convection model that is parallel to plate motion

    摘要根據建立的垂直於大洋中脊的二維熱對流有限元數值模型，採用常粘性以及與溫度相關的粘性兩種粘性結構對小尺度地幔對流對海底地形的影響進行了重新研究。
  15. The evidence that the fluid comes from the down earth ' s crust and mantle did not found by studying fluids ( water, glued thing and natural gas ) in the basin

    川西前陸盆地流體（水、膠結物和天然氣）的研究，未發現來自下地殼及地幔的深部流體地球化學證據。
  16. The alkaline basalts in southern hunan are suggested to have formed by small degrees of decompression melting of the asthenosphere mantle during the initial extension. the transitional ( the chebu gabbro ) and tholeiitic basaltic magmas were generated by relatively larger degrees of partial melting of the mantle

    在裂谷初期，軟流圈地幔的小比例部分熔融形成堿性玄武巖（湘南） ，在裂谷拉張作用比較強、地幔部分熔融比例比較大時形成贛南和湘南的過渡型（車步輝長巖）及拉斑質玄武巖。
  17. The surface loading of the mountains and the associated root of thickened crust produce horizontal deviatoric tension in the strong upper crust. in contrast, the deep, dense lithospheric root and its associated downflexing of the surface produce horizontal compressive deviatoric stress in the strong near - surface layer. the actual state of stress in the strong layer of the upper crust is the combined effect of these two opposite stress systems together with bending and other local and regional stresses such as due to ridge push

    模擬結果表明：由於均衡機制，造山帶下部的低密度山根促使地殼隆升、造山，山根是地殼剛性層中張性構造應力的主要力源；與此相反，冷的高密度巖石圈向軟流圈插入、拆離、下沉，從而形成巖石圈根，它引起擠壓造山和巖石圈地幔物質的重新調整，也是地殼剛性層中擠壓性構造應力的主要力源。
  18. Given their oib - type trace element pattern and depleted sr - nd isotop ic composition, the datong alkali basalts are interpreted to be generated within the asthenospheric mantle but at a shallow depth compared to the yangyuan alkali basalts. the datong tholeiitic basalts exhibit low snd values ( 1 - 4 ). their sr - pb and nd - pb isotopic correlations are consistent with a mixing between the depleted mantle and emi - like component

    大同地區第四紀時期同時產出堿性和拉斑玄武巖，堿性玄武巖也主要來自於軟流圈地幔，巖漿起源深度小於陽原樣品；拉斑玄武巖具有較低的nd （ nd = 1 - 4 ） ， pb - nd以及pb - sr同位素相關關系暗示其可能是dm和型富集地幔（ emi ）組分之間混合的結果，反映了軟流圈和巖石圈地幔之間的相互作用，巖漿起源較淺。
  19. The results of the experiments indicate that : thermal plumes in the mantle ( i. e. mantle plumes ) should be divided into two types, vertical plumes, as mentioned traditionally, and non - vertical plumes, including those of inclined - columns, vortexes, etc., and the former may be only a particular case of the latter ; under the condition of the coriolis force to be ignored

    在忽略科里奧利力的情況下，板塊的下插和滯積下沉、巖石圈根的存在以及地幔介質粘度的非均勻分佈等都可能構成不同形狀的障礙導流體，導致地幔的渦旋運動。
  20. Different zone block in the basin has different construction. cold and heat shells are at intervals. crust behaves as hot, light, flowing and thicker, however, mantle behaves as cold, weight, and harder, multi - phase and deep mantle

    盆地不同區塊熱結構不同，為冷、熱殼相間，地殼表現為熱、輕、軟、流、厚殼，地幔表現為冷、重、硬、多相、深幔的特點。
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