负异常

δEu为0.84-0.96，呈弱的负异常。

The δ Eu is 0.84-0.96 , as a weak negative anomaly .

δCe＜1，具明显负异常。

δ Ce < 1 , exhibiting obvious negative anomaly .

同时还观测到，P波速度负异常区随中心压力增加逐步扩大。

Meanwhile , it is also observed that the regions of negative anomalous P-wave velocity are enlarged by steps as the central loading is increased .

稀土元素总量低，Ce呈弱负异常，重稀土相对富集；

Lower total REE , comparatively enrichment in HREE , slightly negative Ce anomaly ;

原始地幔标准化的过渡元素配分型式表现为不对称的W型，在Ti和Cu处形成两个明显的负异常谷。

The PM-normalized TME distribution patterns are W-type , and have remarkably negative Ti and Cu anomaly .

支流C区Eu的负异常主要反映了在稀土矿影响下风化源区的特征。

The negative Eu anomalies in Branch C area mainly reflect the characteristics of the weathering basin affected by rare earth mineral .

在碳酸盐岩红色风化壳上部Ce显示正异常，底部富集层显示强烈负异常。

Ce shows positive anomalies in the upper and intense negative anomalies at the bottom .

玄武岩多数具有Nb负异常。

Most of the basalts show negative Nb anomaly .

碱长花岗岩和少数石英二长岩Ba和Sr含量较低，且具有明显Eu负异常。

The moyite and quartz monzonite have low Ba and Sr abundances and strong negative Eu anomaly .

含稀土磷块岩普遍具Ce的负异常，显示其对源区的继承性，也指示成磷环境处于氧化程度相对较高状态。

REE-bearing phosphorite has Ce anomaly , showing succession of original region and high oxidation environment during phosphorite formation .

而钙质结核相对于母岩和土壤，Ce亏损，出现负异常。

But , negative Ce-anomaly is discovered in calcareous nodules while normal Ce content in parent rocks and vertisols .

本区沉积物REE分布模式为右倾，富集轻稀土，具中等Eu负异常，与东海、黄海等近海陆源沉积物相似。

This is similar to the REE characteristics of continental sediments such as the East Sea and the Yellow Sea sediments .

初步结果表明：研究区域内5.0级以上中强地震发生前，b值均出现不同程度的负异常。

The result shows that : ( 1 ) There were negative anomalies of 6 value in different degree before medium and strong earthquake of Ms > 5 . 0 in the area ;

大离子亲石元素富集，具明显的Nb、P、Ti负异常和弱的Th正异常，Sr含量较低；

Its large ion lithophile elements are enriched with obvious Nb , P and Ti negative anomaly and slight Th positive anomaly and low content of Sr.

矿石的稀土元素分配模式为轻稀土元素富集型，多数有Eu正异常和Ce负异常。

The REE patterns of the ore in this deposit are characterized by light REE enrichment types , most with positive Eu anomalies and negative Ce anomalies .

稀土元素配分模式上，球粒陨石标准化配分曲线明显右倾，轻稀土元素相对富集，反映出沉积物中等程度的Eu负异常。

In REE distribution patterns , the chondrite-normalized REE partition curve incline to the right , indicate that they are enriched in LREE and middle degree Eu negative abnormity .

土壤中稀土元素的分布模式受成土母岩及元素性质控制，呈现Eu和Ce负异常。

The normalized-distribution patterns of soils present the Eu and Ce negative anomalies , which is controlled by the parent rock and the physico-chemical properties of individual REEs .

花岗岩具强烈的Eu负异常，稀土元素配分曲线呈海鸥型，与A型花岗岩的特征相一致。

Concealed bodies of mining area have obvious Eu negative anomaly . REE distribution patterns show the type of " gull " . This feature is same as A-type granite .

成矿流体是具有δCe和δEu负异常的酸性溶液，基本保留了矿源层的稀土分布模式。

The ore fluid was an acidic solution characterized by δ Ce and δ Eu negative anomalies and it basically maintains the REE patterns of the original source bed .

Eu异常是由源岩继承下来的，Eu负异常的减弱，估计是由于陆源控制减弱、海水影响增强引起的。

Eu anomaly is inherited by the source rock . The decrease of negative Eu anomaly is probably caused by the weakenss of continental origin and the enhancement of seawater 's influence .

在F－F界线有3个Ni－Ir异常层，该异常层同时也富含亲铜元素，并伴有碳同位素负异常以及微玻陨石。

Across the F F boundary there are three nickel iridium moderate anomaly beds , which are also enriched in chalcophile elements , and also accompanied with the carbon isotope negative anomalies and microtektites .

我们在冀中坳陷SH区的试验结果表明，油气藏与自然电位负异常之间有一定的对应关系。

The result of experiments we made in SH area of Jizhong depression shows that the negative anomaly of natural electric potential is related to hydrocarbon reservoir .

岩石富集大离子亲石元素、生热元素和轻稀土元素，贫Sr、Ba，具弱的Eu负异常。

The syenite is enriched in large ion lithophile elements , radioactive heat-generating elements , high field strength elements and LREE and depleted in Sr and Ba and has weak negative Eu anomalies .

稀土元素的球粒陨石配分模式均呈现Eu负异常，模式具负斜率，表明表层沉积物物质主要来源于大陆地壳。

The chondrite-normalized REE patterns of were characterized by the negative Eu ( abnormally ) and the negative gradient , indicating that the main material sources of surface sediments are of matter from the mainland earth crust .

稀土元素分布模式显示其明显富集轻稀土及Eu负异常，并与NASC和PAAS稀土分布模式相似；

REE distribution pattern displays the apparent enrichment of LREE and negative anomaly of Eu and is similar to that of NASC and PAAS .

稀土元素标准化配分曲线呈现出轻稀土富集、重稀土平坦和明显Eu、Ce负异常特征，类似于上地壳和典型太古代页岩，具有海相沉积特征。

The REE patterns of analyzed sediment rocks in the Pingxiang basin are similar to those of the upper crust and typical Archean shales , and show enriched LREE and flat HREE with obvious Eu-and Ce-anomalies .

沉积物中REE和Nd同位素组成具有明显的变化规律，Ce呈弱的负异常，介于0.83～0.99之间，而Eu呈现中等亏损，在0.53～0.73之间变化。

REE and Nd isotopes exhibit distinct variations . Cerium exhibits weak depletion , ranging from 0.83 to 0.99 , whereas medium europium anomaly ( 0.53 ~ 0.73 ) can be observed in the core .

赣南特地区河水溶解态稀土元素页岩标准化配分模式并不平坦，重稀土元素相对轻微富集，并表现出Ce负异常和Eu正异常。

The shale-normalized river water-dissolved REE distribution patterns of the Ganjiang River in the southern Jiangxi Province are not flat and the HREEs are relatively slightly enriched , showing obvious Ce negative anomaly and Eu positive anomaly .

高钾岩石均出现明显的Nd、Ta负异常，表明高钾岩浆在形成过程中有陆壳物质加入到源区并与俯冲作用有关。

The evidently negative anomalies in Nb and Ta make clear that there is an input of the continental material into the mantle source , and the petrogenesis of high-K rocks are related to subduction .

Eu正异常和弱Ce负异常同时在矿石中发育，说明矿石沉淀时较高温度的热流体与少量的海水发生了对流混合。

The coexistence of both apparent positive Eu anomalies and weak negative Ce anomalies in the ores indicate the convectively mixing of hydrothermal fluids with a small amount of seawater when the ores were precipitated on ancient seafloor .