lower mantle 中文意思是什麼

lower mantle 解釋
下地幔
  • lower : adj 〈low 的比較級〉1 較低的。2 下級的，低級的。 lower animals 下等動物。3 南部的。 in lower Manh...
  • mantle : n 1 披風，罩衣。2 一層（被覆）幕，蓋罩。3 （煤氣燈）紗罩;【解剖學】外表；【動物；動物學】套膜；（...
  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. Shock wave compression technique has play an important role in the understanding of the material composition thermodynamic state and physical properties of the earth ' s ulterior. in this article, the stabling of high - pressure phase of one of the main candidate materials of the earth ' s lower mantle ? enstatite ( mg0. 92, fe0. 08 ) sio3 were investigated through the experimented measurement of hugoniot equation of state, and together with thermodynamic calculation and analysis

    本學位論文以沖擊壓縮技術為手段，從測量其hugoniot物態方程入手，結合高壓物理和熱力學理論分析，較深入地研究了下地幔中的一種主要候選組分頑火輝石（ mg _ （ 0 . 92 ） ， fe _ （ 0 . 08 ） ） sio _ 3在與下地幔大致相當的溫度壓力條件下的相態-鈣鈦礦型結構的相穩定性。
  3. Structure of lower mantle and core - mantle boundary region and its geodynamics

    下地幔及核幔邊界結構及地球動力學
  4. 2 both the hanging wall and the footwail rock of ore bodies are garnet biotite schist, protoliths are alkaline volcanic rocks ( tracyh andesite ). according to characteristics of trace elements assemblages and the setting of tectonics, these alkaline volcanic rocks were derived from the lower degree melting of metasomatic and enriched mantle ( eml ) in the initial stage of middle proterozoic epoch. they strongly enriched in large ion lithophile elements ( lile ), such as ba

    2 、礦體頂、底板圍巖（石榴石黑雲母片巖、鈉長黑雲母片巖等）的原巖為堿性火山巖（粗面安山巖） ，相對富集大離子親石元素ba 、 cs 、 rb 、 k 、 lree及貧zr 、 sr 、 ti 、 hf 、 hree ，為早元古代末期-中元古代早期交代富集地幔低程度部分熔融所形成的堿性火山巖。
  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. High - mg volcanic rocks approach the primitive mantle compositions, and their magmatic source is close to the composition of bse, derives from the lower mantle and formed by this type - mantle rocks " fractional melting highly ( > 25 % ). high - mg volcanic magma, formed in the axis of the emei mantle plume, underwent the crystallization differentiation of olivines and some pyroxenes ; some olivines reflect fair cumulus crystallization

    高鎂火山巖接近於原始巖漿的組成，巖漿源區與地球平均成分bse的成分特徵相近，起源深度為下地幔，為該地幔巖較高程度的部分熔融（ 25 ）而形成的。高鎂火山巖處于地幔柱的軸部，經歷了橄欖石及一定程度的輝石分異結晶，並且橄欖石顯示出一定的堆晶作用。
  7. The formation of the enriched mantle ( em1 ) is attributed to the strong metasomatism - taking place between subducted yangtze lower crust and nc ( north of china ) ancient lithosphere

    2 、火山巖、堿性超基性脈巖和基性脈巖（除少數外）都形成於大陸板內拉張環境。
  8. There are distributed a great number of cenozoic basalts and mantle derived xenoliths in north china and south china. for understanding the materials constitutes, evolution, mantle metasomatism, and inhomogeneity of the lower crust and upper mantle, there is a must of doing some research on these host basalts and the xenoliths

    華北、華南地區發育大量新生代玄武巖及幔源包體，對其進行研究，有利於進一步深入了解下地殼和上地幔的物質組成、演化、地幔交代和不均一性以及地球物理反演結果的可靠性等。
  9. He wore a large brown mantle, one fold of which, thrown over his left shoulder, served likewise to mask the lower part of his countenance, while the upper part was completely hidden by his broad - brimmed hat. the lower part of his dress was more distinctly visible by the bright rays of the moon, which, entering through the broken ceiling, shed their refulgent beams on feet cased in elegantly made boots of polished leather, over which descended fashionably cut trousers of black cloth

    他穿著一件棕褐色寬大的披風，下擺的一角掀起蓋住了他的左肩，象是故意用它來遮住下半部臉似的，而上半部臉則完全藏在他那頂寬邊的帽子下面，他的下半身著裝比較清楚，從破屋頂上進來的明亮的月光，照出他的擦得雪亮的皮靴，皮靴上面是黑色的長褲，顯然他即使不是個貴族，也是上流社會中的人。
  10. ( 3 ) the mineral source was provided by both lower crust, upper mantle and upper crust, obviously from crust - mantle mixing

    （ 3 ）礦田中的成礦物質的不僅來自於下地殼和上地幔，而且還來自於上地殼，具有殼幔混合特徵。
  11. " but at the same time, a horizontal pulling power inside the lower continental crust and mantle of the earth counteracts this upward movement, " said bian

    「但同時，從下地殼一直到地幔上部在產生一種東西拉張的力量，這種拉力對喜馬拉雅山的繼續升高起到了阻礙作用。 」
  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. The control of the deep - seated structural - magmatic process over the metallogenic system around the middle - lower yangtze river reaches is shown as : ( 1 ) the mantle uplift belt is closely related to the general geological background of the metallogenic system ; ( 2 ) the primitive magma originated from different parts of the mantle uplift belt ( mantle ridge or mantle slope ) shows differences in style of formation and composition and results in different magmatic series and metallogenic subzones, respectively ; ( 3 ) the varying depths of structural - magmatic chambers may form a " three - layered structure " ( central type, network - like and ring - like ) and this is the primary factor that controls the different magmatic series and the concerned cluster of ore deposits ; ( 4 ) the alkaline basaltic magma derived from the mantle ridge forms high - potassium and calcium alkaline magma and shoshonitic magma due to its altering intensity of afc process with the lower crustal material, which has something to do with the copper - gold and iron - sulphur metallogenic subsystems, respectively

    深部構造巖漿作用對長江中下游成礦帶安徽沿江地區成礦系統的控製表現為： （ 1 ）地幔隆起帶與成礦系統的總體地質背景的演變密切相關； （ 2 ）源於地幔隆起帶不同部位（幔脊與幔坡）的原始巖漿，其生成方式和物質組成不盡相同，它們分別產生相應的不同巖漿巖系列和成礦亞帶； （ 3 ）不同深度的構造巖漿房組成中心式網格式環帶式「三層結構」 ，是控制區內不同巖漿巖系列及有關礦床集中分佈的主要因素； （ 4 ）源於地幔隆起帶脊部的堿性玄武巖漿，由於與下地殼物質發生的afc作用強度不同，形成了高鉀鈣堿性巖漿和橄欖安粗巖漿，分別與銅、金成礦亞系統和鐵、硫成礦亞系統有關。
  14. While there is no distict evidence to prove the tanlu fault ' s noted deep and dynamic behavior within the lower crust or even on the upper mantle. thus there still exists a necessary to research and check the understanding about the boundary ' s location and the dynamic background

    作為一級構造單元分界線的紅河斷裂、怒江斷裂是超殼斷裂，而昌寧雙江斷裂顯示為低角度鏟式斷層，中下地殼無與之對應的速度異常，可能意味著該斷裂切割不深。
  15. N2 - rich inclusions were first founded in ore area ; it may form by upper mantle or lower crust material during oxidation - devolatilization reactions

    鐵礦體被銅礦體包圍，鐵礦石被銅礦細脈穿插，說明銅礦化的形成晚于鐵礦化。
  16. One is the effect of quick stretching of lithosphere, upwelling and temperature raising of upper mantle, the other is result of the flexibility discrepancy among upper, lower crust and lithosphere under crust during the lithosphere cooling

    該運動以及渤海灣盆地在伸展裂陷階段的多次構造運動說明渤海灣盆地呈現出幕式沉降過程，東營運動則具有更重要的動力學意義。
  17. There are two series of cu, au deposits, the stratiformed deposits and the intrusive - related ones in the mineralization belt of the middle and lower reaches of the yangtze river area. comparative studies on forming geodynamic backgrounds, geological and geochemical conditions of the ore - forming systems have been undertaken in this paper. the stratiformed deposits were formed in hercynian period by submarine exhalation - sedimentation sedex of hot brine through the synchronous basement faults in a tensional environmental, and the intrusive - related deposits were formed in yenshanian in a tensional or a transitional period to tensional environment during the upper mantle doming by water - rock interaction and complex transport - chemical reaction dynamic processes, the ore - forming fluids were mainly magmatic water from melt - fluid partition and some meteoric water

    成礦流體系統形成的地球動力學背景及地質地球化學條件對比研究表明，賦存於石炭系中的層狀銅金礦床是海西期拉張背景下熱鹵水沿同生斷裂經噴流作用形成的海底噴流熱水沉積礦床與燕山期中酸性侵入巖有關的銅金礦床是在上地幔隆起張性或向張性過渡背景下形成的，是中酸性巖漿經熔體流體分離作用形成的巖漿熱液與大氣降水混合，經水巖作用等復雜的輸運和化學反應耦合過程的動力學產物。
  18. The geochemical data of the benzilan and pantiange volcanic rocks from the jinshajiang zone yielded characteristics similar to those of island - arc volcanic rocks : intensive enrichment in lile and different depletion in hfse, nb, ta, ti, p and zr, hf. their lower e nd ( t ) values ( - 4. 03 - - 11. 29 ) indicate that they are derived from an emu mantle source or a mixing source between dm and emu respectively, but which are affected violently by subduction materials

    同位素研究顯示，它們具有較低的_ （ nd ） （ t ）值（ - 4 . 03 - 11 . 29 ） ，表明它們分別來源於富集地幔emii以及虧損地幔dm和emii兩元混合的源區，兩地的火山巖源區都受到了俯沖帶物質的強烈影響。
  19. It shows that the resolution of the crust interface ' s shape on this four profiles is very good, nevertheless that of the velocity structure is relatively poor. the crust and upper mantle ' s fine configuration on the hq - 13 profile is obtained by our tomography, which reveals some important structure and dynamic features of this region : the velocity structure of the crust consists of three layers, the upper crust, the middle crust and the lower crust. however it also can be divided into six lateral blocks, each of them " s velocity is always higher or lower than that of its neighboring blocks

    本文第五章利用有限差分反演和射線反演的方法獲得了符離集?奉賢地震測深剖面（ hq - 13線）精細的地殼上地幔結構剖面，揭示出下揚子地區一些重要的結構和動力學特徵：地殼速度結構在縱向上大致可分上地殼、中地殼和下地殼三部分，橫向上可劃分為6個塊體，各塊體的p波速度沿測線方向呈現高速?低速?高速的組合。
  20. “ but at the same time, a horizontal pulling power inside the lower continetal crust and mantle of the earth counteracts this upward movement, " said bian

    邊研究員稱， 「但與此同時，地球下層地殼和地幔里一種水平狀的拉力阻礙著喜馬拉雅山的上升。 」
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