查询词典 basalt-porphyry
- 与 basalt-porphyry 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Basic suite consists of tholeiite and alkali-basalt.
基性岩套由拉斑玄武岩-碱性玄武岩组成。
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The second faulting activity during late period of early Cretaceous, controls the formation of a series of faulting bounded basins with dustpan shape, as well as the formation of interlayer between tholeiite and alkaline basalt bearing olivine existed in red layer.
早白垩世晚期的第二次断陷,则控制了赣杭带沿线—系列箕状断陷盆地以及红层中拉斑玄武岩和碱性橄榄玄武岩夹层的形成。
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The Mg-rich volcanic rocks consist of high-Mg decite and high-Mg basalt which are the products of congenetic magma,in Ashele are, Xinjiang. In comparison with tholeiite, their εNd are obviously low, implying that they are contaminated by the oceanic sediments during their forming process.
阿舍勒富镁火山岩由高镁英安和高镁玄武岩组成它们可能是同源岩浆的产物,与共生的拉斑玄武岩相比,富镁火山岩钕同位素明显富集,反映在其形成过程中受到了大洋沉积物的混染。
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The basalt is belong island arc tholeiite and series of the calc-alkaline,and have character of island arc in rare earth element and trace element.
玄武岩属岛弧拉斑玄武岩和钙碱性系列,属太平洋型钠质类型,稀土、微量元素显示具岛弧特征,大地构造位置为岛弧中心靠近大洋一侧,与南侧那拉提晚泥盆—早石炭世侵入岩共同组成火山弧,同为古亚洲洋向北俯冲的产物。
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The crustal sequence of Shexian ophiolites belongs to the transitional series behaeen calc-alkaline basalt and tholeiite and all through has similar trace elements and REE ratios and chondrite-normalized REE patterns, with high enrichment of large-ion lithophile elements and LREE.
歙县蛇绿岩壳层组合属于钙碱性和拉斑玄武岩间过渡系列,具类似的微量及稀土元素比值和稀土元素配分模型,且大离子亲石元素和LREE高度富集。
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Basalts plot in tholeiite in A.I-Al〓O〓 diagram. They have enriched LREE patterns without negative Eu anomaly. Their Zr/Y=4.4~6.5,〓=0.70790~0.70146, Th>>Ta,εNd values are between -1.8 and +3.7, indicating continental contamination. Pb isotope characteristics are close to that of typical tholeiitic flood basalt in the world.
Al〓O〓图上落入拉斑玄武岩区;稀土配分为LREE富集型,均无负Eu异常,Zr/Y=4.4-6.5,〓=0.70790~0.70146;Th>>Ta,ε〓介于-1.80~+3.7之间,都显示了陆壳混染的影响,Pb同位素与世界上典型拉斑质溢流玄武岩比较接近。
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Of them, we proposed the term of the Toyon volcanogroup in the first time. All the volcanoes can be subdivided into two types: central-eruption-typeand flood-basalt-type, building a series of volcanic mechanism, including calderas, volcanicnecks and cone sheets.
托云火山岩是由多个近于同时喷发的火山口的喷出物复杂堆积的产物,这些火山口可以划分成中心式火山和溢流玄武岩两种类型,它们共同组成了托云火山群。
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Their multi-element distribution patterns show continental tumescence characteristics of intraplate basalt.
它们的多元素配分曲线均呈现出板内玄武岩的大隆起特徵。
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In general, the composition of lower crust is close to basalt and the composition of upper crust is similar to granite.
一般来说,下地壳的成分接近于玄武岩,而上地壳的物质成分与花岗岩相似。
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Our project is based on Cenozoic volcanic rocks and deep seated xenoliths in it to reconstruct the source composition and ctructure. We did field investigation, collection of samples, determination of age and composition characteristics of selected samples. The new achievements are following. 1 recognized a potassic metasomatic source of the Cenozoic volcanic rocks through an integrated research of volcanic rocks and their sources. 2 analysis of TM images suggests the Tuoyun basin is a basin with a volcano group instead of a simple volcano-tectonic basin. We found several volcanic craters and cone, and detected three such craters. 3 systematic reseach of volcanic sections and collection of samples both of volcanic rocks and xenoliths, the later includes peridotite, granulite, gneiss and variety of megacrysts. This is propitious to our further research at this rigion. We would like to point that we collected some peridotite large than 20cm in diameter. It could used to variety of analysis and end the history without mantle chemistry records in the region. 4 we got a U-Pb SHRIMP age of 3.87 Ma for the Kangxiwa basalt.It is the youngest record of U-Pb SHRIMP age in China and provide a chronology restriction for last uplifting of Tibet plateau. 5 the investigation of alkali syenite-synogranite in Taxkogan suggests that the origin of Parmir syntex is related to the Cenozoic magmatism.
本项目立足于从火山岩属性和深源捕掳体反演源区成分与结构两个途径,利用火山岩综合研究成果对地幔源区进行了初步反演,提出源区经受过强烈钾质交代的观点;对重点工作区TM图像进行了初步解译,新发现若干了火山口,并对其中三个火山口作了实地查验,为进一步全面深入开展该区的火山地质学及相关科学问题打下了良好基础,认为托云盆地是一个火山群,而不是一个单一的火山构造盆地;系统测制了火山岩剖面,新采集了一批重要的火山岩和深源岩石捕虏体样品,为下一步工作打下基础,特别是采集到了直径打20cm的幔源橄榄岩包体,可用于各种测试,将可以结束西部造山带没有地幔岩化学分析结果的历史;对康西瓦玄武岩进行了测年分析,取得了我国目前最年轻的锆石U-Pb SHRIMP年龄,对青藏高原挽近地质时期的隆升提供了年代学约束;对帕米尔东缘塔什库尔干碱性岩体的动力学意义进行了探讨,提出青藏高原西部构造结的形成与岩浆活动有关的观点。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?