結晶巖帶 的英文怎麼說
中文拼音 [jiējīngyándài]
結晶巖帶
英文
zone of crystalline rocks-
Based on the studies of petrotexture, structural deformation and the relevant metamorphism, this paper indicates that this peridotite massif is the product of ultramafic magma cumulated at the crust - mantle transtion zone and has undergone the early stage of plastic deformation under the condition of granulite facies （ 800 ） and late ductile shearing at amphibolite and greenschist facies in relevance to uplifting
本文通過巖體的結構、構造變形及相應的變質作用研究，提出了該橄欖巖體是由超基性巖漿在殼幔過渡帶結晶而成，並經歷了與圍巖一致的麻粒巖相（ 800 ）條件下的早期塑性變形以及角閃巖相和綠片巖相退化變質條件下與逆沖上升有關的韌性剪切變形。Detail mapping shows that the yagan mcc consists of crystallized metamorphic core ( low plate ), detachment zone and upper plate. the metamorphic core consists of can be further subdivided into two level parts low - level high metamorphic and upper - level shallow metamorphic structural slice and between them there exists a ductile shear zone. thus the whole texture of the mcc is characterized by " three layers and tow zones " this reveals a process of extensional uplift of poly - level slices by poly ductile shear zones, a characteristics of poly - level extensional structural systems. the deformational environments change vertically in a sequence of high amphibolite facies
亞干變質核雜巖由下盤結晶巖系變質核、拆離帶和上盤巖系構成，其中，變質核由四個單位及許多花崗巖體（脈）組成，可進一步分為中深和中淺變質兩個構造單位（巖片） ，之間發育次級韌性拆離帶（花崗質糜棱巖帶） ，加上上盤總體構成「三層兩帶」的結構特點。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。However, in the area with strong magma mingling, there are widespread abnormal fabrics, distinguished differences in the idiomophic - textures and the peritectic reaction, poililitic texture, metasomatism among the minerals, metasomatic border, embayment, rimmed structure, abnormal plagioclase zoning, relict fabric as well as the acicular apatite are very common
巖石的異常結構構造十分發育，礦物之間自形程度差異顯著，常見包晶反應、包含結構、交代邊、熔蝕邊、交代蠶食的港灣狀結構構造及交代縫合線、礦物鑲邊、斜長石異常環帶和礦物殘留等，多見指示巖漿混合的標志性礦物針狀磷灰石。Systematically tested, analyzed and sorted out geochemical data of intrusion - related nickel deposits in china, such as analysis of zonal structure of chrome spinels, micro - probe in situ analysis of single minerals incjude olivine and pyroxene by la - icp - ms, in which some of the research is the first time domestically
其中一些研究，如鉻尖晶石環帶的研究、橄欖石、輝石等單礦物的原位la ? icp ? ms分析等，在我國還是首次，為研究我國主要銅鎳硫化物礦床成巖成礦過程中元素的分異和演化提供了定量結果。During the yanshanian phrase, the area is in the condition of contractional background, with multi - staged tectonic reversion. 5. through studying the origin of volcanic rocks and the characteristics of magma evolution, it concludes that there exist 3 originated areas of magma - from mantle, crust, and mantle - crust exchange. the basic magma of nandaling volcanic rocks of early jurassic is derived from upper mantle ; the magma of tiaojishan volcanic rocks of mid jurassic is formed in the contractional tectonic setting, and derived from the transition zone of crust and mantle interaction ; the acid magma of l
5 、通過巖石化學、微量元素、稀土元素的研究，探討了不同級別節律的火山巖成因、巖漿演化等特徵，認為本區燕山期火山巖有三個巖漿源區，即地幔源、地殼源和殼幔混源，早侏羅世的南大嶺旋迴的基性巖漿，起源於上地幔；中侏羅世髫髻山旋迴火山巖是在相對擠壓環境中，巖漿起源於殼幔過渡帶；晚侏羅世無負eu異常的酸性巖漿來源於下地殼的古老結晶基底的局部熔融，有負eu異常的酸性巖漿來源於上地殼的局部熔融；早白堊世火山巖基性巖漿起源於上地幔，中性巖漿起源於下地殼底部的殼幔過渡帶。The comparison study of the three belts indicates although they are distinct from each other all the three belts show many common features in the aspect of the metallogeny of large - rich vein uranium deposits, i. e : the important metallogenic areas are located above the old crystalline basement ; the paleo - rifting ( taphrogeny ) controls the development of the volcanic belt and at the same time it is favourable metallogenic tectonic environment ; the occurrence of uranium deposit does not depend on the lithology of volcanic rocks ; uranium metallogeny is obviously constrained by deep geologic processes and the connected fault - structural net is the necessary condition for the formation of large - rich uranium deposits
對比研究表明，雖然它們各具特色，就脈型富大鈾礦床成礦作用而言，它們又具有較多的共性：重要成礦區的火山噴發皆奠基在古老的結晶基底上；古裂谷（或裂陷）既控制了火山巖帶的發育，又是有利的成礦構造背景；鈾礦賦存對火山巖的巖性沒有明顯的選擇性；鈾成礦的深部控製作用明顯；聯通的構造網路系統是形成富大鈾礦的必要條件。6. on the ground of all these research works, we studied the magma crystallization - assimilationary mechanism that works on the shandong sapphire and its bands, we also analysed the relationship between this mechanism and the isolated or open condition
6 、在上述研究基礎上，討論了山東昌樂藍寶石及其環帶形成的巖漿結晶-同化混染聯合作用機制及其與封閉開放條件的關系。分享友人