查询词典 basalt

Continental basalt ; island-arc or active continental margin basalt ; crustal or lithospheric contamination ; asthenosphere or plume

大陆玄武岩；岛弧或活动大陆边缘玄武岩；地壳或岩石圈混染作用；软流圈或地幔柱

This paper presents new data of electronic microprobe analvses on clinopyroxenes from the layers of picrite and associated basalt in this area. It is shown that the clinopyroxenes from the picrite are exclusively diopside, whereas those from the basalt are diopside and augite, suggesting a continuous variation in composition.

本文对该地区苦橄岩及其共生的玄武岩中单斜辉石的矿物化学成分进行了电子探针分析，结果表明，苦橄岩中的单斜辉石全部为透辉石，玄武岩中的单斜辉石种属有普通辉石和透辉石两类，但玄武岩中的单斜辉石成分呈连续演化关系。

Tuyon volcanic rocks are classified as alkali series, which are low in silicon, enrichedin alkali, especially enriched in kalium. The types of the volcanic rocks include trachybasalt,basanite, basalt,and phonolitic basalt.

托云火山岩具贫硅富碱，特别是富钾的特点，属于碱性系列，岩石的类型包括粗面玄武岩、碧玄岩、玄武岩、响岩质玄武岩。

In order to study impact mechanical properties of the basalt fiber reinforced concrete, the BFRC specimens with 0、0.1% and 0.3% fibre volume content were prepared. The Φ100mm split hopkinson pressure bar apparatus was adopted tocarry out the impact compressive experiment. The dynamic stress-strain curves were obtained. The impact mechanics performance of BFRC were studied through analyzing the impact compressure strength and deformation.

摘 要：为了研究玄武岩纤维混凝土（basalt fiber reinforced concrete，简称BFRC）的冲击力学性能，制备了纤维体积掺量分别为0、0.1%和0.3%的BFRC试件，采用Φ100mm分离式霍普金森压杆（split hopkinson pressure bar，简称SHPB ）设备对BFRC试件进行了冲击压缩试验，得到了BFRC的动态应力应变曲线，从冲击压缩强度和变形两方面研究了不同应变率下BFRC的冲击力学性能。

The lava includes sub-alkali and alkali series. The former includes picrite-basalt, basalt, basaltic andesite, andesite, dacite and rhylite etc; the latter includes tephrite, trachybasalt, basaltic trachyandesite, trachyandesite, trachyte and pantellerite etc.

其中熔岩类有亚碱性系列和碱性系列，前者包括苦橄玄武岩、玄武岩、玄武安山岩、安山岩、英安岩、流纹岩等，后者有碱玄岩、粗面玄武岩、玄武粗安岩、粗安岩、粗面岩、碱硫岩等。

The two volcanic materials are similar but are also different ①the partition mode of rare-earth element is similar to that of the basalt.②the increase content of the rare-earth element content in transitional layer shows that it enrichs in this segment due to the volcano events. Moreover, the comparability of the partition mode shows that the volcano-genic materials and the basalt are of the same source.③low Eu anomaly different from the high Eu anomaly of medium-acidic tuff in Meishan section, that show that their formation is different④there are plentiful basalt detritus.⑤there are enrichment of the Ti element.⑥the lower content of siderophile element of Ni and Co, especially in the transitional layer, show that there were not extraterrestrial events and big scale basic or ultrabasic volcano eruption events in this area. These characteristics show that the sedimentary source of Xuanwei Formation and Kayitou Formation is basalt.

1稀土元素配分模式与玄武岩类似；(2)稀土元素含量在异常层的增加反映了火山事件导致了它在该段地层中的富集，而配分模式的相似性反映了火山物质来源与玄武岩具有同源性；(3)低"Eu"异常区别于煤山剖面的中酸性凝灰岩高"Eu"异常模式，说明界线粘土岩成因也不同于煤山剖面的界线粘土；(4)大量的玄武岩岩屑；(5)Ti元素的富集；(6)亲铁元素Ni和Co含量较低，特别是在界线异常层含量降低，表明本区在界线处可能并不存在地外事件和大规模基性、超基性火山喷发事件，这些特征反映本区宣威组和卡以头组物质来源主要为玄武岩。

The main sceneries are pillow shape basalt , amygdaloidal basalt , columnar jointing basalt , slaggy basalt and volcanic stone dragon .

主要现象有枕状玄武岩，杏仁状或气孔状玄武岩，柱状节理玄武岩，渣状熔岩和火山石龙。

In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1～0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.

本文采用三维有限元浮动网格法仿真计算程序，对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析，对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析，在此基础上提出了推荐的施工方案；根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案；玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果，对推荐的施工方案进行了温度场和温度徐变应力仿真计算，并对比分析了两种不同骨料情况下的温度场和温度应力，结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求，且灰岩细骨料优于玄武岩细骨料；计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响，夏季蓄水方案与冬季蓄水方案相比，坝体上游变态混凝土区域最大拉应力小0.1～0.3MPa，其他部位最大拉应力无明显变化，夏季蓄水对坝体上游面混凝土的抗裂有利；根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施，对大坝的设计温控措施进行了综合评价，并提出了该工程的温控措施，对温控设计和优化施工方案具有重要参考价值。

Petrological and petrochemical characteristics show that there exist such volcanic and subvolcanic rock types as basalt, iddingsite olivine basalt, olivine basaltic trachyandesite, trachybasalt, latite, trachydacite, trachyte, rhyolite, tuff and granite-porphyry in northeast Jiangxi Province. The volcanic rocks can be subdivided into high K calc-alkaline series, shoshonite series and alkaline basalt series.

岩石学及岩石化学特征表明，赣东北地区早白垩世火山岩及次火山岩主要有：玄武岩、伊丁石化橄榄玄武岩、橄榄玄武粗安岩、粗面玄武岩、安粗岩、粗面英安岩、粗面岩、流纹岩、凝灰岩及花岗斑岩等，可划分为高钾钙碱性、橄榄安粗岩和碱性玄武岩3个系列。

There are two evolutional trends for sodic basalts: alkaline basalt to sub-alkaline basalt and to the contrary. The fact that alkaline basalt has the higher concentration of incompatible elements and the sub-alkaline lower indicates the increasing degree of the partial melting in the mantle sources. The variety of Sr, Nd isotope compositions in different types of rocks shows their different mantle sources.

钠质玄武岩存在着碱性玄武岩到亚碱性玄武岩和亚碱性玄武岩到碱性玄武岩的变化序列；碱性玄武岩到亚碱性玄武岩不相容元素丰度逐渐降低，表明为部分熔融程度逐渐增高的产物；Sr、Nd同位素组成与岩性之间的相关性表明，各种岩浆是不同地幔源区部分熔融的产物。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

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如果有任何问题，你可以随时联系我。