subduction zone 中文意思是什麼

subduction zone 解釋
潛沒帶
  • subduction : n. 1. 減去，取回，扣除；【數學】減法。 2. 【地質學；地理學】潛沒（使一個地殼板塊下降到另一板塊之下）。
  • zone : n 1 【地理】（地）帶。2 區域，范圍，界。3 〈古、詩〉（腰）帶。4 圈，環帶。5 【數學】（球面）帶；...
  1. Chagan sag is a secondary tectonic unit in chagandelesu depression, northeastern yingen - eji ' naqi basin, and the basement of the basin is a paleozoic fold belt of continental margin or island arc at the connection region of north china plate * tarim plate and kazakstan plate, with the character of erogenic belt. in working area and its adjacent area, the forming tectonic setting of indosinian intrusion was that orogenic belt pressed strongly, intracontinental subduction ; that of early yanshan movement epoch was the stress field transferred from compression to extension meanwhile the incrassate crust of orogenic zone turned to extensional collapse ; and that of early cretaceous volcanics was that the area structure extensional collapse further more during the post period of orogenic phase

    查干凹陷屬于銀根?額濟納旗盆地東北端查干德勒蘇坳陷內的一個次級構造單元，其盆地基底為古生代時期華北板塊、哈薩克斯坦板塊和塔里木板塊交接部位形成的陸緣或島弧褶皺帶，具有古生代造山帶的性質。研究區及鄰區印支期侵入巖形成於造山帶強烈擠壓陸內俯沖的構造環境；燕山早期侵入巖形成於由擠壓轉向拉伸、造山帶的增厚陸殼開始發生伸展垮塌的構造環境；早白堊世火山巖形成於造山期后進一步發生伸展垮塌的區域構造環境。
  2. 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
  3. 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。
  4. The site of this destruction is another kind of plate boundary : a subduction zone

    銷毀舊巖石圈的地方形成另外一種板塊邊界：一塊潛沒的區域。
  5. The main context will be expanded with the topics of plate kinematics, faulting and deformation, subduction - zone earthquakes, and continental earthquakes, etc

    內容涉及板塊動力學、地表破裂以及形變、隱沒帶地震、大陸地殼地震等等主題。
  6. Based on the geological, stratigraphic and geochemical characteristics of the ophiolitic melange, island - arc and rift volcanic rocks from the jinshajiang zone, an archipelagic tectonic model with multi - rift and multi - subduction is proposed to explain the evolution of jinshajiang paleo - tethys. the ophiolitic melanges of the jinshajiang zone are mainly outcropped at baimangxueshan, tongduo, gongka, dongzhulin and jiyidu in the deqin county. the geochemistry of major and trace elements of the jinshajiang ophiolite shows its geochemical characteristics are similar to those of the more and island - arc volcanic rocks, but different from those of the typical n - mopjb

    金沙江蛇綠混雜巖主要分佈在德欽縣的白茫雪山、通多、共卡、東竹林和吉義獨地區，主量和微量元素地球化學特徵研究表明，金沙江蛇綠巖不具有典型n - morb的地球化學特徵，而具有介於morb和島弧之間的地球化學特徵，暗示它並非形成於寬闊的大洋環境，不是古特提斯在滇西北地區的主縫合帶，可能是古特提斯多島洋體系中的一個弧后盆地。
  7. A third possibilty is that ivc colapsed primarily due to natural reasons ( climate change, tectonic activity along the subduction zone along the indo - asian plate boundary ) and that there was no indo - aryan invasion that took place

    印度河流域文明衰落的第三個可能是由於自然因素（氣候改變，伴隨著印度雅利安人進入的可建造區域減少） ，並沒有印度雅利安人入侵的發生。
  8. Similarly, any pushing force great enough to buckle a plate and form a new trench and subduction zone would certainly form one immediately adjacent to an existing spreading center

    同樣，任何大得足以使板塊發生撓曲並形成一個新的海溝和俯沖帶的推力，也當然會很快在一個現有擴展中心附近形成海溝和俯沖帶。
  9. 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。
  10. However, the age of the rock closely approximates the timing of low - angle oblique subduction of an ancient pacific plate, high - pressure metamorphic event, uplift of the pingtan - dongshan metamorphic belt and movement along the changle - nanao shear zone

    時間上與古太平洋板塊低角度?歪斜俯沖、晚中生代的變質事件、平潭?東山變質帶抬升和長樂?南澳剪切帶運動在時間上基本一致。
  11. In the jinshajiang suture zone, it lasted only a span of 9 ma from the start of subduction ( marked by the eruption of andesitic magmas and intrusion of intermediate rock of iag type at about 227 ma ) to the end of subduction, consumption of oce

    Iv期： 45ma以來，高原快速抬升；斷裂系活化，產生大規模走滑活動；巖體或被斷層切割、遷移，或抬升剝蝕。 ivi ： 45 25mi ，巖體和整個青藏高原一起呈周期性的、脈動式抬升。
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