查询词典 ree
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Major conclutions from this study can be summarized as following:1. On mineralogy, rutiles, apatites, epidotes and vein minerals from UHPM rocks were firstly and systematically studied, by detailed petrography and mineral-chemistry investigation, some mineral or mineral assemblage with special composions or texture were firstly found in UHPM rocks from Sulu-Dabie, for example, corrudum, magnesite, high-Ti biotite and garnet were found as inclusions in rutiles from eclogites, Nb-Fe rutile and zoned Si-Y apatite were found in gneiss, epidote / allanite with euhedral zones like magmatic genesis were found in elogites and gneiss, a lot of minerals with high REE, HFSE, LILE and volatiles were found in veins of gneiss.
在矿物学方面,首次较为系统地研究了超高压变质岩中的金红石、磷灰石、绿帘石等副矿物,并通过详细的岩相学和矿物化学研究,首次在苏鲁-大别超高压变质岩中发现了一些具有特殊成分/结构的矿物或矿物组合,如在榴辉岩金红石中发现了刚玉、菱镁矿、高钛黑云母和石榴石矿物包裹体,在片麻岩中发现了Nb-Fe金红石和具有自形环带结构的高Si-Y磷灰石,在榴辉岩和片麻岩中发现了具有类似岩浆成因的自形生长环带结构的绿帘石/褐帘石,在片麻岩的脉体中发现了大量富含稀土元素REE、高场强元素HFSE(Nb、Ta、Zr、Ti)、大离子亲石元素LILE(K、Th、U、Sr、Ba),以及挥发性组份(CO_2、F、P、S)的特殊矿物,丰富并提升了超高压变质岩的矿物学研究。2。
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The oxidation of Ce results in loss of REE, U, and alpha decay product Pb during the alteration of the pyrochlore.
这表明在烧绿石蚀变期间,Ce的氧化导致了稀土元素、U及α衰变产物Pb的损失。
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During the evolution of these granitoids which resulted from rejuvenation and anatexis of the old basement (1200-2000Ma), the main ways for REE differentiations were:(1) partial melting;(2) fractional crystalization;(3) thermogravitational diffusion;(4) differentiations of metamorphism and migmatism, and (5) hydrothermalism.
在花岗岩的形成和演化过程中,有五种最主要的方式造成REE的分馏作用:(1)部分熔融作用;(2)分离结晶作用;(3)热重力扩散作用;(4)变质-混合岩化作用和(5)热液流体作用。
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The results shows that the REE of Shuixigou Group came mostly from andesite and granite in the denudation zone,but did not originate from basalt.The pH values of the interlayer oxidation rock zone and the primary reduction rock zone are similar,and those of ore zone are lower than the other two zones.
伊犁盆地南缘乌库尔其地区流体和岩石的 pH值分布情况表明,层间氧化岩石带和原生还原岩石带的 pH值相似,而矿石带的 pH值偏低,这与在偏碱性条件下, REE和 U的络合物容易形成,并且 REE和 U的络合物随着 pH值的降低而迁移和沉淀富集是相吻合的。
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The RE E patterns of apatites in porphyrite iron deposits are in general similar to those of apatites in anorthosite, norite andjacupirangite . The apatites are enriched in light REE, with pronounced negative Eu anomaly.
结果表明产地和母岩不同的矿床中,它们的磷灰石稀土元素分布型式一致,以轻稀土富集和Eu负异常明显为特征,属陆相岩浆成因。
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The actual REE distribution in a particular apatite is often indicative of the chemical and physical conditions under which it formed.
因此这种元素组份的分布可以成为磷灰石结晶过程所处的地质学环境中化学和物理条件的指证。
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This paper demonstrates some rock genesis discrimination about Archean gray gneiss based upon REE geochemistry.
本文以稀土元素地球化学理论论证了北京、辽吉地区某些花岗岩为岩浆成因而非混合岩构成的"地层"。
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The border of Ehuling group and Daguding group was renewed.it concluded that volcano rocks of former subcycle and latter subcycle volcanic activities all came from the same source of magma,according to their chemical compositions and their chondrite normalized REE patterns.
对如意亭剖面鹅湖岭组与打鼓顶组的界线进行了重新厘定,对早晚两个火山活动旋回火山岩的化学成分、稀土配分特征进行了比较,得出了两旋回火山岩系属同一岩浆源的不同阶段演化产物的认识。
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The chondrite normalized distribution patterns of REEs are characterized by light REE enrichment and Eu depletion with terrestrial sedime...
约 1 740年以前,陆相特征明显,气候干燥、寒冷,但是,1 5 5 0年左右有一暖期。1 740年后,出现海侵,巴罗气候变暖,1 82 1年后,变暖较明显,1 890年左右为低谷。1 90 4年持续变暖,1 971年左右,有一变冷阶段
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Chondrite standardized modes of REE show that LREE is richer than HREE in both laterite-type and Carlin-type gold deposit. Carl...
红色粘土型金矿形成于上新世,卡林型金矿形成于白垩纪,在成矿时代上有先后顺序关系。
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- 推荐网络例句
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In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.
Aelia 是高举他自己,并在此城内朝拜罗马诸神。
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The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.
泥炭积累的持续性质的手段,陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时,相当于浅海阶层,从而使确定的高频周期,不记录在themarine 阶层。
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The discussion includes two parts, the first question is about the influence of parents divorce on children and how those children are maintained by their parents. The second thesis is about differences on maintenance between divorced parents and connubial parents.
从父母离婚对未成年子女的影响以及离婚后的父母抚养未成年子女的现状入手,分析了离婚父母与未离婚父母在抚养未成年子女的内容上、形式上之区别,进而深入剖析离婚父母抚养未成年子女的特点及其问题。