查询词典 mantle

Hypogene high thermal or deep source epi-mesothermal condition and it is not only stressed the mantle source simply but also the crust-mantle;②in order to guid ore exploration better the artificial classification of uranium deposits should be broken and uranium ore-forming system strengthened;③much attention should be paid to searching the diabase-hosted rich uranium ore in strongly argillized cataclastic zone;④attention should be paid to the influence of basement of volcanic basin on the uranium ore formation that should be undstood both in feeling and theoretically through the ore propect process;⑤relation of red basin with uranium ore formation can be made clear from analyzing tectonics, paleo-climate and time and it is not only theoretically important but also helpful to uranium ore prediction;⑥crypto explosive pipe is an uranium ore, rich uranium ore host structure and it is the next goal for uranium ore exploration in east China.

摘要文章论述了华东火山岩型铀矿找矿值得重视的地质问题：①铀成矿既可形成于浅源浅成低温条件，也可形成于深源深成高温或深源浅成中低温条件，在强调深源时，不是简单地认为是幔源就可以了，还必须强调壳幔作用的地质过程；②打破人为的&类型&划分，加强&铀成矿系统&的研究，更好地指导找矿；③研究基性脉体与铀成矿问题应注意构造、岩石矿物成分、成因、蚀变与成矿3大问题，注意寻找泥岩化作用强烈的破碎辉绿岩脉中的富铀矿；④火山盆地基底对铀成矿的作用主要是提供铀源，将基底对铀成矿的影响从感性认识推向理性认识，有效地指导找矿；⑤红盆与铀成矿关系可以从构造、古气候及时间分析研究中得出结论，它不仅仅是一个理论问题，而且有助于铀成矿预测；⑥隐爆角砾岩筒是铀成矿、成富矿的重要储矿构造，是华东火山岩型铀矿找矿的新领域。

The 43-57km lithospheric mantle could be consist of a suite of cumulates with crystalloblastic texture, cumulate texture and relic magmatic crystalline textures, such as orthopyroxenite, websterite, clinopyroxenite and olivine-pyroxenite. The lithospheric mantle of 43km to Moho discontinuity could be spinel harzbergite and minor spinel lherzolite, in which the spinel harzbergite and minor spinel lherzolite xenoliths are discoveried. The Moho in the region could be an transitional zone composed of cumulates in petrology.

它既包括了具变晶结构的斜方辉石岩、二辉石岩，又包括了具有残留岩浆结晶结构与堆积结构的橄辉岩和辉石岩；向上至莫霍面，应为尖晶石方辉橄榄岩，并有少量尖晶石二辉橄榄岩，本区发现的尖晶石二辉橄榄岩(T7-21)和尖晶石方辉橄榄岩(T35、T58)可能来自该层；本区莫霍面在岩石学上可能为一个由堆积岩组成的过渡带(3～5km)。

Kubusunan granite is chracterized by low87Sr/86Sr initial values and high ε values, indicating its origin partly from mantle rocks. The number of microgranular dioritic enclaves is the direct evidence for crust-mantle magma mixing, thus showing that enclaves are the residual formed from the partly fusing of basic magma.

库布苏南花岗闪长岩体具有低锶初始比值I和正ε值，表明花岗岩的来源有地幔物质参与，而大量发育的暗色微粒闪长质包体是壳幔岩浆混合作用最直接的证据，微粒包体是基性源岩部分熔融作用形成的残余体。

The latest geopotential model, EGM96, was employed to compute the free air gravity anomaly, geoidal separation, the average density anomalies of the crust and the uppermost mantle, and the distribution pattern of the viscous stress exerted by mantle convection over Xinjiang and its neighboring areas.

利用最新的地球重力场模型，计算了新疆及邻近地区的自由空气重力异常、大地水准面扰动异常、地壳和上地幔平均密度异常以及地幔对流引起的岩石层底界面粘滞应力场分布。

Because new mantle inputs have not been identified in terms of zircon Hf isotopes, mantle-derived magmas might not have been involved in formation of this S-type granitoid belt.

因为缺少显著幔源特征的高εHf值锆石，本文认为地幔物质基本没有参与该S型花岗岩带的形成。

This is an A_1 type granitoid belt, slightly predominated by mantle components. Their source regions are probably mainly the lithospheric mantle and lower crust, which had been metasomatized and enriched so that they could bear OIB characters in trace elements.

这是一个以地幔物质略占优势的A1亚型花岗质杂岩带，其源区物质可能主要是经过交代和富集的具有OIB型微量元素特征的岩石圈地幔和下地壳。

A very complicated mantle mineral group including the native iron and wustite assemblage was recently discovered in chromitites from the mantle harzburgite of Luobusa ophiolite, Tibet.

笔者在西藏蛇绿岩的铬铁矿石中发现了十分复杂的地幔矿物群，其中包括自然铁-方铁矿的共生组合，它们被认为是外地核和下地幔的物质通过地幔柱作用携带到上地幔的。

According to cpx-melt equilibrium pressure, the xenoliths types and simulating calculating of host rock REE partition pattern, source of sodic basalts is garnet lherzolite mantle, and the source of potassic basalt is metasomatic fluid altered phlogopite-containing garnet lherzolite mantle. For the alkaline basalts to sub-alkaline basalts, the melting degrees of the source rocks are 4%～15%.

根据单斜辉石—熔体平衡压力计算、所携带的包体类型及玄武岩稀土元素配分曲线的非实比部分熔融定量模拟表明，钠质玄武岩的来源为石榴石二辉橄榄岩源区，五大连池钾质玄武岩的源区是被交代的含金云母石榴石二辉橄榄岩源区，研究区碱性玄武岩到亚碱性玄武岩是石榴石二辉橄榄岩源区经4％～15％部分熔融程度的产物。

The exsistence, activity and lithogenesis of mantle metasomatism are the outstanding achievements of magmatic petrology and geophysics recent years. The significance of mantle metasomatism in ore-forming process has drawn attention of ore geologists.

地幔交代流体的存在、活动及其成岩作用是近年来岩石学研究中所取得的最突出的成果之一，它在成矿中的作用也逐渐引起矿床学界的关注。

The source of mafic dikes are mixed with depleted mantle and enrichment mantle, but the contents of the former is more than that of the later.

本期的基性岩脉微量元素含量、MORB标准化模式和同位素与前面白垩纪的基性岩脉明显不同，软流圈参与其源区明显增多。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。