火山弧 的英文怎麼說
中文拼音 [huǒshānhú]
火山弧
英文
volcanic arc-
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。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。In this case during paleozoic, nearly east west trending arc structures resulted from the interaction between china plate and siberian plate. in mesozoic the westward subduction of kula - pacific plate under the china continental plate resulted in the nne and ne trend structures ( duimadao fault, diaoyudao fault, okinawa fault, uplifts belts and subsidence belts ) as well as volcano - magmatic belts in eastern of china plate
本文所涉及近東西向展布的弧形構造形成於古生代時期中國板塊與西伯利亞板塊的碰撞帶,而在中生代,中國板塊下的kula - pacific板塊向西俯沖導致了北北東向和北東向構造(如duimadao斷層、 diaoyudao斷層、 okinawa斷層、隆起帶和沉降帶)以及位於中國板塊東部的火山巖漿帶。This area was in an arc and rear - arc basin on convergent plates in the middle devonian
其巖石化學及地球化學顯示島弧火山巖特徵。And apatite. by these analyses and comparison with general granite both in china and the world and with the granite in other au or cu belt in china, the characteristics of the granite in this area are concluded as follows. it belongs to magnetite - i or syntectic granite and has crust - mantle mixed characteristics ; it was formed mainly by crystallization differentiation of melting magma and multiphase varied intrusion ; the degree of differentiation evolvement is not high ; the granite and its enclaves p. re congenetic ; the range of temperature is about 500 - 700, the range of pressure is about 2. 50 gpa - 4. 35 gpa, and the range of oxygen fugacity ( lg fo2 ) is - 15. 53 - - 14. 00 ; most granite bodies formed before the collision of plates, and few formed after the collision of plates
通過對測試數據的分析與綜合研究,並同中國和世界一般花崗巖類以及中國主要金、銅成礦巖體的花崗巖類進行對比,得出本區花崗巖類巖石具有以下特徵:屬磁鐵礦-型或同熔型花崗巖,其巖漿物質具殼幔混源特徵:主要由熔融態巖漿經結晶分異作用,通過多期變速上侵而形成;其分異演化程度較低;寄主巖基和包體具有同源性;巖石的形成溫度范圍約為500 - 700 ,壓力大約為2 . 50gpa - 4 . 35gpa ,氧逸度值1gfo _ 2為- 15 . 53 ? 14 . 00 ;該巖帶主要形成於板塊碰撞前消減的活動板塊邊緣期,為燕山至喜馬拉雅早期的大陸邊緣火山弧環境的產物。2. 6 2. 7ga, these granitoids are most likely to be derived from the partial melting of hybrids both 2. 6ga metavolcanic materials in archean wutaishan magmatic arc and older continent crustal materials under lower than 1. 2gpa. petrological and geochemical characteristics of wangjiahui granitoid intrusion suggest that is probably fored under post - collisional tectonic background
2 . 1ga在- 3 . 82 - 2 . 80范圍,表明王家會古元古代花崗巖最有可能形成於大約2 . 6ga五臺山大洋島弧火山巖物質和更老的陸殼物質在5. yulong - mangkang and leiwuqi - zuogong metallogenic belts are formed in collision - orogeny circumstance, and the ore - forming process is related with lava - thermal fluid tightly
張性火山島弧環境下形成了德格?鄉城成礦帶,成礦與火山沉積作用密切相關。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。The primitive study on the emplacement mechanism suggests that the volcanic rocks had underwent the stages of the trench accretion and the basement of forearc basin, which received the elastics of the yanbian group
經過初步的侵位機制分析,可知這套火山巖經歷了海溝增生楔、弧前盆地基底,並接受了鹽邊群碎屑巖的沉積。Through the systematic analysis and contrast studies on topographical environment characteristics of these typical regions, it is found that the hydrothermal activity only occurs under the circumstance of the particular topographical environment, though it distributes widely in the tensional tectonic environment, for instance, the mid - ocean ridges, transform faults zones, back - arc spreading basins and the modern marine craters regions
通過對典型熱液區地形環境特徵的系統分析和對比研究發現盡管現代海底熱液活動廣泛分佈在大洋中脊、轉換斷層、弧后擴張盆地等各種不同的張性構造環境及現代海底火山活動區,但也僅出現在特殊的地形環境條件下。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。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。分享友人