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These zircons have nearly the same ~(204)Pb -corrected ~(207)Pb/~(206)Pb ages, with weighted mean age of ca 2.5Ga, interpreted as forming or anatexis age of protolith of the rutile ores.

这两期锆石的~(204)Pb校正的~(207)Pb/~(206)Pb年龄值几乎一致,加权平均值位于2.5Ga左右,可解释为金红石矿石的原岩形成年龄或者深熔年龄。

Give the age of regional metamorphism not younger than 2.55±0.04 Ga, and those of the anatectic rock of granodioritic composition collected just east of Xiaojue, value of 2.47±0.09 Ga for the age of anatexis.

测定结果说明小觉及其以东地区三种岩石所经历的区域变质作用的年龄,不小于2.55±0.04 Ga,小觉附近深熔岩石的深熔年龄为2.47±0.09 Ga。

Leucite has high thermal expansion coefficient,so the existing of leucites in the Porcelain fused to metal can achieve the compatibility between porcelain and metal.

采用钾长石为主要原料可以合成含白榴石的熔块,白榴石高膨胀系数的特点,可以弥补烤瓷合金与瓷釉之间的膨胀系数差。

To elucidate the relationship between otolith microstructure and microchemistry and the life history events of the grey mullet Mugil cephalus in the early stage, the daily growth increments, growth check, Sr/Ca ratios and trace elements in otoliths of the juvenile mullets collected from the four estuaries from NE to SW Taiwan coast from 1996 to 2004 were examined by using the light and electron microscopes, electron probe microanalyzer and laser-ablation inductively coupled plasma mass spectrometry. A transition check was found in otoliths of all mullets.

为了阐明乌鱼耳石微细构造、微化学与其初期生活史事件之关系,本研究於西元1996年至2004年在台湾东北至西南沿岸的四个河口域进行乌鱼稚鱼的采样,然后利用光学及电子显微镜、电子微探仪及雷射熔蚀-感应偶合电浆质谱仪分析稚鱼耳石的日周轮、锶钙比及微量元素组成之变化。

According to the phase relationship in the reaction system felsic melt+ small amount of peridotite, we suggest that assimilation of the mantle clinopyroxene + olivine + spinel as well as the fractional crystallization of sodic amphibole and clinopyroxene is an important process which modifies the composition of adakites and cause the Na depletion in adakites..

根据长英质熔体与橄榄岩反应体系的相关系,我们认为,地幔单斜辉石、橄榄石、尖晶石的混染作用以及钠质角闪石和斜方辉石的分离结晶作用,是改变埃达克熔体组成并导致其Na亏损的一个重要的过程。

It is found that there is a co-relationship between the boron isotope and chemical composition of magmatic tourmaline: the δ〓B value increases with increasing Al and Li in Y-site of tourmalines. The low δ〓B values (-41. 1~-39. 01‰) in Altay No. 3 pegmatite, which is one of the lowest values found by now, imply that non-marine evaporites might exist in magma source, or the pegmatitic magma had been assimilated by them during its intrusion and emplacement.

阿尔泰3号伟晶岩最初形成的结构带中电气石的B同位素组成是目前所发现的最低值之一(-41.11~-39.01‰),指示形成伟晶岩脉的初始岩浆可能由含非海相蒸发岩的泥质岩经变质深熔作用形成,或是伟晶岩岩浆在上侵定位过程中同化了含非海相蒸发岩地层的结果。

The results show that higher zircon addition resists the densification of fused magnesia zirconia materials,and the zircon addition influences the crystalline size of periclase,pore size and the pore structure significantly.

结果表明,配料中锆英砂含量的增加使熔浆的粘度上升,合成料难以致密化。锆英砂配入量对ZrO2晶形及晶粒尺寸影响不大,但明显影响方镁石的晶形、晶粒尺寸以及气孔的形状和尺寸。

Therefore, its UPb ages are likely to yield the age of metamorphic crystallization rather than resetting by simple diffusion, such that metamorphic titanite may preserve complicated UPb system that contains information of the whole metamorphic history of the rock, which can be revealed by in situ UPb dating, e.g., SHRIMP, LAMCICPMS and LAICPMS.

由于榍石的组成元素均为岩石中的主要元素,很容易与其它矿物、熔体及流体发生反应,所以榍石的U-Pb年龄记录的更可能是结晶年龄,而不是简单的扩散重置年龄;也因为它容易反应,变质榍石复杂的UPb体系可能记录了岩石的整个变质历史信息。

In contrast to zircon, titanite is quite reactive in most rocks contain Ca and Ti at different conditions. Therefore, its UPb ages are likely to yield the age of metamorphic crystallization rather than resetting by simple diffusion, such that metamorphic titanite may preserve complicated UPb system that contains information of the whole metamorphic history of the rock, which can be revealed by in situ UPb dating, e.g., SHRIMP, LAMCICPMS and LAICPMS.

由于榍石的组成元素均为岩石中的主要元素,很容易与其它矿物、熔体及流体发生反应,所以榍石的U-Pb年龄记录的更可能是结晶年龄,而不是简单的扩散重置年龄;也因为它容易反应,变质榍石复杂的UPb体系可能记录了岩石的整个变质历史信息。

Sapphire from Shandon and Hainan commonly have the reaction border, we found out this reaction border enriched with Fe,Mg,and K by testing its components; We also studied the inclusion in the sapphire, and found many KC1 crystal grain with variety of size, a melt inclusion enriched with K,Si, is also found, this may suggest an assimilationary-magmatic course; Besides that, another minerl inclusions such as enstenite, magnetite, chromite, zircon are also found.

观察到了山东、海南蓝宝石普遍存在的反应边,并测试了反应边的成分,证实其以富Fe,Mg,和K为特征;研究了蓝宝石里面的包体,发现蓝宝石里面存在着大小不等的KCl的结晶颗粒,还发现了富K富Si的熔浆包裹体,说明其形成过程中有同化混染的贡献;此外还发现了斜方辉石,磁铁矿,铬铁矿,锆石的包体矿物。

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By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。