拉斑玄武巖 的英文怎麼說
中文拼音 [lābānxuánwǔyán]
拉斑玄武巖
英文
tholeiite- 拉 : 拉構詞成分。
- 斑 : Ⅰ名詞(斑點; 斑紋; 污點; 瑕疵) spot; speck; speckle; stripe; stain Ⅱ形容詞(有斑點或斑紋的) spo...
- 玄 : Ⅰ形容詞1 (黑色) black; dark 2 (深奧) profound; abstruse; recondite 3 (不實在; 靠不住) unrel...
- 武 : Ⅰ形容詞1 (關于軍事的) military 2 (關于技擊的) connected with the art of attack and defence in...
- 巖 : 名詞1. (巖石) rock 2. (巖峰) cliff; crag
- 玄武 : 1 (烏龜) tortoise2 (二十八宿中北方七宿的合稱) seven constellations of northern sky3 (道教所...
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By studying, the main conclusions have been achieved as follows : i. the volcanic rocks, as the result of the partial melting of enriched mantle, comprise calc - alkaline andesite and dacite and a few tholeiite
通過研究,得出以下主要認識: 1 、火山巖為一套以鈣堿性安山巖為主,含少量拉斑玄武巖和英安巖。On the basis of the study on the petrology, trace element, and isotopic geochemistry, the primary magma of volcanic rocks can be divided into two series according to their originated rocks and degree of partial melting. one is the basanite - alkaline basalt - olivine tholeiite magma series, which are generated by partial melting from spinel iherzolite ; the other is nephelinite magma - alkaline picritic basalt magma, which are generated by partial melting of the garnet iherzolite
巖石化學、微量元素、同位素地球化學證據都表明,華北、華南地區的火山巖根據源巖和局部熔融程度的不同,可以分為兩個原生巖漿系列:一個是源巖為尖晶石二輝橄欖巖,隨著局部熔融程度的增加,形成的碧玄巖巖漿-堿性玄武巖巖漿-橄欖拉斑玄武巖巖漿;另一個是源巖為石榴石二輝橄欖巖,隨著局部熔融程度的增加形成的霞石巖巖漿-堿性苦橄玄武巖系列。The alkaline basalts in southern hunan are suggested to have formed by small degrees of decompression melting of the asthenosphere mantle during the initial extension. the transitional ( the chebu gabbro ) and tholeiitic basaltic magmas were generated by relatively larger degrees of partial melting of the mantle
在裂谷初期,軟流圈地幔的小比例部分熔融形成堿性玄武巖(湘南) ,在裂谷拉張作用比較強、地幔部分熔融比例比較大時形成贛南和湘南的過渡型(車步輝長巖)及拉斑質玄武巖。The tholeiite with late trassic age has been found in helanshan area on the north part of western margin of ordos basin
在盆地西緣北部賀蘭山地區,發現典型拉張環境形成的拉斑玄武巖,測年時代為晚三疊世。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。Cu - ni sulfided mine complex locate in baimazai of jinping county is sub alkali iron - super iron, it ' s zoning is clear and it ' s ni - cu - co melting first and enrichment, its rare earth is rich in right lean light rare earth, but eu in olive rock is serious to be bad, gd - tb is tittles negative abnormity. above - mentioned show that the mineral is cone from mantle, and didn " t mix with crustal substance, and continent tholeiite magma turning into continent tholeiite emplacement after by surging
金平白馬寨銅鎳硫化礦床雜巖體分帶明顯、屬亞堿性鐵質-超鐵質巖、具ni - cu - co三元素先熔離,后富集的規律、稀土配分為右傾斜輕稀土富集型,但橄欖巖銪虧損顯著, gd - tb微小負異常,顯示成礦物質來源地幔,與地殼物質無混染和大陸拉斑玄武巖漿上涌后變為大洋拉斑玄武巖漿侵位特點。Given their oib - type trace element pattern and depleted sr - nd isotop ic composition, the datong alkali basalts are interpreted to be generated within the asthenospheric mantle but at a shallow depth compared to the yangyuan alkali basalts. the datong tholeiitic basalts exhibit low snd values ( 1 - 4 ). their sr - pb and nd - pb isotopic correlations are consistent with a mixing between the depleted mantle and emi - like component
大同地區第四紀時期同時產出堿性和拉斑玄武巖,堿性玄武巖也主要來自於軟流圈地幔,巖漿起源深度小於陽原樣品;拉斑玄武巖具有較低的nd ( nd = 1 - 4 ) , pb - nd以及pb - sr同位素相關關系暗示其可能是dm和型富集地幔( emi )組分之間混合的結果,反映了軟流圈和巖石圈地幔之間的相互作用,巖漿起源較淺。Two ree distributed pattern, lree - depleted and flat, which display a specific character of typical mid - ocean ridge tholeiite, indicate that primary magma may be derived from near primary or a typical large ion lithophile element ( lile ) - depleted mantle
巖石稀土元素配分模式可分為lree平坦型和lree虧損型兩類,指示了其原始巖漿起源於近原始或典型的大離子元素虧損型的地幔,為典型的大洋中脊拉斑玄武巖的特徵。分享友人