volcanic arc 中文意思是什麼
volcanic arc
解釋
火山島弧-
Distant effect of jurassic collisions of qiangtang terrane, lasa terrane and paleo - pacific land onto the eurasian land made east qinling - dabie mountains in a compressional circumstance for a long time, and suppressed its orogenic extension ; whereas, cretaceous late - collisional extension and appearance of west pacific trench - arc - basin system relieved east qinling - dabie mountains of external compression, instantly result in violent orogenic lithosphere delamination - extension and depressurized - calefactive melting, and consequently, led to the formation of large scale early cretaceous granitoids and intermediate - acidic volcanic rocks
羌塘地體拉薩地體和西太平洋古陸在侏羅紀與歐亞大陸拼貼碰撞的遠距離效應使東秦嶺大別造山帶長期處于擠壓環境，伸展作用被抑制白堊紀的碰撞晚期伸展和西太平洋溝弧盆體系的遠距離效應使東秦嶺大別地區的外部擠壓消失，導致造山帶巖石圈迅速強烈拆沉伸展和減壓增溫熔融，從而形成大規模早白堊世花崗巖類和中酸性火山巖。 -
4. it is the first time that eclogite conglomerates are discovered in maotangchan and fenghuangtai formations. this suggests that ultra - high pressure metamorphic rocks in the dabie orogenic belt exhumed to the earth ' s surface in lower cretaceous. the geochemistry data indicates that the protoliths of the eclogite gravels formed in a structure setting of volcanic arc
首次在毛坦廠組、鳳凰臺組中發現了榴輝巖礫石，這一發現表明大別造山帶超高壓變質巖在早白堊世已經折返到地表，而且地球化學研究表明這些榴輝巖礫石的原巖形成於巖漿島弧構造背景。 -
The volcanic rocks belong to the cal - alkaline series and petrochemistry and geochemistry show characteristics of island arc volcanic rocks
酸性熔巖及同質凝灰巖，屬鈣堿性系列，且高鉀富鋁。 -
Is there a neo - tethys subduction record earlier than arc volcanic rocks in the sangri group
存在比桑日群弧火山巖更早的新特提斯洋俯沖記錄么 -
Their original rocks are volcanic rocks, epicontinental clastic sedimentary rocks, and ophiolite of volcanic and island arc tholeiitic series or calcium alkali series
其原巖巖石類型有火山巖，陸緣碎屑沉積巖，火山、島弧拉斑系列或鈣堿系列火山巖、蛇綠巖等。 -
Shiyingtan gold deposit is situated in the volcanic island arc zone of northern margin of tarimu plate in the late paleozoic, and is located the west section of xiaorequanzi - dananhu the zone ore forming of cu, ni, au, sn. the condition of geological mineralization in the area is outstanding
石英灘金礦床位於塔里木板塊北緣晚古生帶火山島弧帶，處于小熱泉子-大南湖cu 、 ni 、 au 、 sn成礦帶中西段，區域成礦地質條件優越。 -
The continent in mid - westhern inner mongolia is composed of a microcontinent, three volcanic island arcs and three back - arc basins, which are north china microcontinent, baiyun obo back - arc basin, bainaimiao volcanic island arc, wendurmiao back - arc basin, sunitezue - xilinhaote volcanic island arc, hegenshan back - arc basin and erlianhaote - xilinguole volcanic island arc respectively
摘要內蒙古中西部大陸由一個微大陸、三條弧后盆地和三條火山島弧，即華北微大陸、白雲鄂博弧后盆地、白乃廟火山島弧、溫都爾廟弧后盆地、蘇尼特左錫林浩特火山島弧、賀根山弧后盆地和二連浩特錫林郭勒火山島弧組成。 -
This important tectonic zone parallel to the isotopic geochemical steep zone, which represented a suture line between the yangtze and cathaysian blocks. the geochemical evidence of the jianshui volcanic rocks from the sw part of shizong - mile zone shows that their lithologic types are tholeiites with the comparative flat ree patterns and enrichment in th, depletion slightly in nb, ta, and flat hfse. thus, they may be formed in a back - arc basin with the characteristics between morb and island - a
該構造帶西南段的建水火山巖地球化學特徵研究表明，該火山巖為拉斑玄武巖，具有較平坦的稀土分配型式， th較富集， nb 、 ta輕微虧損，高場強元素分佈較平坦，具有介於島弧和morb之間的地球化學特徵，可能形成於弧后盆地環境。 -
Their structural environment is mainly volcanic arc
其構造環境主要為火山弧地區。 -
Study on petrology, geochemistry and isotope chronology shows that the metallogenesis is closely related to granite - porphyry, which belongs to the early ordovician adakite formed in volcanic arc
花崗斑巖與成礦作用關系密切，從巖石學、巖石化學、年齡學等方面對花崗斑巖進行了研究，認為花崗斑巖屬于志留世早期形成於火山弧環境的埃達克巖。 -
At last they have being formed the tectonic framework, after breakup of the volcanic island arcs, subduction, decline and fall of the back - arc basins and arc - microcontinent and arc - arc collision had finished
經過了長期而復雜的微大陸和火山弧的裂解、弧后盆地的消減衰亡及弧陸和弧弧碰撞等構造演化，才最終形成今天所見到的這種構造樣式。 -
The geochemical signatures show that the volcanic rocks in the jingzhushan formation were formed in the island - arc environment as crustal thickening - melting products in a compressional tectonic setting
地球化學特徵表明，竟柱山組火山巖形成於島弧構造環境，是擠壓背景下地殼增厚熔融的產物。 -
Under the tectonic backgrounds of island arc belt, fore - arc trench belt, back - arc basin, and epicontinental active belt of late paleozoic, it has different volcanic rock characteristics
在晚古生代島弧帶、弧前海溝帶、弧后盆地或陸緣活動帶等構造環境下發育有不同的火山巖組合。 -
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。 -
It is very resembly representative island arc volcanic rock in the geochemistry character, so i demonstrate that a petrofabric formed tectonic activity section and island arc environment ; i also demonstrate that parametamorphite in the a petrofabric formed tectonic activity section. b petrofabric is very resembly a petrofabric in many aspects, so i think that b petrofabric also formed island arc environment, but volcanic activity obvious weakened in the b petrofabric stage. c petrofabric formed carbonatite mesa
在地球化學特徵方面與典型島弧火山巖非常相似，得出a巖組形成於構造活動區，形成環境為島弧環境。 a巖組的副變質巖的原巖碎屑巖是快速堆積的，處于構造活動區。 b巖組和a巖組對應的巖石在各個方面都非常相似，所以形成環境也為島弧環境，只是火山活動在這期間明顯減弱。 -
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。 -
The lower paleozoic strata in the south kunlun massif are kulafuhe group of cambbrian - ordovician. they consists of metamorphic detrital rocks, limestone, magnetite - bearing basalt, quartzite ( meta - silicalite ), which suggests that they might form at active continent margin. the geochemical characteristics of volcanic and detrital rocks do indicate that they might form at an active marginal environment such as island arc etc. associated with the qimanyuter ophiolite suit, there are lots of early paleozoic granitic plutons
在昆南地塊上的早古生代地層為寒武?奧陶系庫拉甫河巖群，由變碎屑巖、灰巖、含磁鐵礦玄武巖、石英巖（變硅質巖）等組成，顯示其比昆北地塊有較大的活動性，火山巖和碎屑巖的巖石地球化學特徵也反映為島弧及活動邊緣環境。 -
Based on geological environment, bi - model volcanic series, sedimentary formation and geochemical features of volcanic rocks, it is held that the deposits were most probably formed in the carboniferous back arc rifted environment
根據礦床產出地質環境、雙峰式火山巖系、沈積建造以及火山巖地球化學特徵，推斷昆侖式火山巖型塊狀硫化物銅礦床最可能形成於泥盆紀石炭紀弧后拉張構造環境。
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