陨石

Among the investigated meteorites, Dong Ujimqin Qi, Weiyuan mesosiderites and Ningbo iron meteorite were recovered in China, and Rafruti ataxite was found in 1886 in Switzerland.

在所研究的4个陨石中，东乌珠穆沁旗、渭源{类型Ⅲ中铁陨石及宁波铁陨石是在中国回收的，另一个无结构铁陨石Rafruti是于1886年在瑞土发现的。

Rafruti ataxite has the youngest exposure age,(6.9± 1.5) Ma, of all ataxites, whereas Ningbo with that of (107± 15) Ma falls within the range of the other ochedrites.

其中Rafruti无结构铁陨石为(6.9±1.5)Ma，在所有无结构铁陨石中是最低的；宁波铁陨石为(107±15)Ma，落在八面体铁陨石的范围内。

The enstitate ordinary chondrite family formed near the Sun and in the inner solar system.

顽辉石－普通球粒陨石系是在靠近太阳的内太阳系区域形成的关键词：南极陨石，沙漠陨石，球粒陨石，球粒陨石分类

In spite of its low model abundances of the Ningqiang refractory inclusions, high model abundances of olivine aggregates, and high matrix/chondrule volumetric ratio relative to Allende and CV chondrite, the Ningqiang meteorite is a typical oxidizing CV chondrite.

宁强陨石的岩石学、岩石化学特征与CV陨石相应特征相似，尽管宁强陨石具有相对于Allende和CV陨石的较高的富Ca，Al包体、较低的杆拦石集合体的模式丰度和较高的基质/球粒的体积比，宁强陨石仍是一块典型的氧化型CV陨石。

Of Fe , Cu in the metal phase and Mg, Si in the silicate phases to understand the processes of mixing of metal and silicate phases and further decipher the mechanism of formation of mesosiderite;(2) to study in detail the geochemical characteristics of each phase in the meteorite, to provide necessaryevidence for the model of formation of mesosiderite;(3) to study and update in detail the composition of each phase in the meteorite, and provide a new and complete set of data for understanding the mechanism of formation of mesosiderite.

Cu和硅酸盐相中的Mg， Si等中等挥发性元素的稳定同位素进行分析，判断中铁陨石的金属相和硅酸盐相混合过程的环境特征，进而阐明中铁陨石的形成机制；（2）对这块陨石的各相进行详尽的地球化学分析，通过这些相的地球化学关系判断中铁陨石的形成机制，对中铁陨石的形成模型提供必要的制约和证据；（3）全面更新对中铁陨石各矿物相化学成份的认识，为中铁陨石的成因之谜的全面揭开提供最新最完整的数据。

Of 685 meteorites published in the Meteoritical Bulletin Database,there are 2 martian meteorites,2 eucrites,6 ureilites,5 mesosiderites,1 pallasite,1 iron,and 10 carbonaceous chondrites.

在正式公布的684块已分类陨石中，鉴定出2块火星陨石、2块灶神星陨石、6块橄辉无球粒陨石、5块中铁陨石、1块橄榄陨铁、1块铁陨石以及10块碳质球粒陨石等特殊样品，并对其中的部分样品开展了深入的研究。

Two special TL phenomena have been found in Yanzhuang meteorite through the determination of the natural TL, annealed TL and induced TL by β radiation: l.when the sample of Yanzhuang meteorite is annealed at temperature up to 500℃, the TL peak induced by β rays moves to lower temperature with the increasing of irradiation dose; 2.when the annealed temperature is greater than 600℃, the TL peak temperature of the annealed sample is higher than that of the unannealed sample.

991年10月31日21点45分在广东省翁源县岩庄乡境内发生了陨石降落。从降落现场收集到3.skg的陨石样品，经初步鉴定为H6型、具有强冲击变质特性的珍稀普通球粒陨石。根据陨石命名规则定名为岩庄陨石。普通球粒陨石是目前研究太阳系早期所发生的化学与物理变化过程的最好的信息来源。

The chemical-petrographic types of these meteorites are presented below.Six are unequilibrated ordinary chondrites,including three H3 and three L3;92 meteorites are equilibrated ordinary chondrites,including 24 H-group(13 H4,10 H5,1 H6),64 L-group(2 L4,44 L5,18 L6) and 4 LL-group(3 LL4,1 LL5);the other two belong to stone-iron meteorites.In 6 unequilibrated ordinary chondrites,chondrules are well-shaped,and olivine and low-Ca pyroxene are commonly zoned and have wide ranges of composition.The olivine and low-Ca pyroxene in the other 92 equilibrated ordinary chondrites have similar composition,respectively,and to some degree it reflected thermodynamics equilibration in olivine and lowCa pyroxene.

并根据矿物-岩石学特征，划分了它们的化学-岩石类型：6块属于非平衡型普通球粒陨石(H3和L3群各3块)；92块属于平衡型普通球粒陨石，包括：H群24块(13块H4，10块H5，1块H6)，L群64块(2块L4，44块L5，18块L6)，LL群4块(3块LL4，1块LL5)；另外两块属于石-铁陨石。6块非平衡型普通球粒陨石保存了原始的岩石学和矿物化学特征，包括：清晰的球粒结构、橄榄石和低钙辉石具有明显的成分环带以及极不均一的化学组成等。92块平衡型普通球粒陨石中的橄榄石和低钙辉石显示出均一的化学组成，表明它们达到了一定的热力学平衡。

Of a total of 28 meteorites collected in Grove Mountains, Antarctica, by the 16th CHIN-ARE, there are 20 equilibrated ordinary chondrites.

我国第16次南极科考队回收的28块陨石中，除1块火星陨石、1块HED陨石和6块非平衡L3型陨石外，其余20块为平衡型普通球粒陨石。

The isotopic abundances of rare gases and cosmic-ray exposure ages of asteroid meteorites, planetary meteorites and the Apollo lunar samples applied to clue up and understanding cosmic-ray exposure history of parent bodies of different meteorite types, collision events, the relationship between cosmic-ray exposure ages and heliocentric distance of the parent bodies, irradiation history of precompaction exposure of chondrules, pairing meteorites for the Antarctic meteorites and desert meteorites, the ejection history of planetary meteorites, and relative ages of lunar craters and so on.

小行星陨石、行星陨石及阿波罗月球样品的稀有气体同位素丰度和宇宙射线暴露年龄，已广泛应用于探索和了解不同类型陨石母体的宇宙射线暴露历史、冲击碰撞事件、暴露年龄与日心距离的关系、吸积形成母体前硅酸盐球粒的辐照历史、南极和沙漠陨石中成对陨石的判别、行星陨石的溅射历史及月坑的相对年龄等关键词：宇宙射线暴露年龄；陨石；球粒陨石；无球粒陨石；火星陨石；中铁陨石

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。