Our results indicated that REE concentrations of groundwater within the granitoid weathering crust in Baisha area are high relative to many groundwater samples within granite weathering crust worldwide.

本文研究了廣東省白沙地區(qū)花崗巖風(fēng)化殼地下水的水化學(xué)特征亚洲一区黄片，特別是與花崗巖的風(fēng)化過(guò)程有關(guān)的稀土元素含量及其分布模式。

Among them, the black rings puts in order salt crust sand content to increase, but the white rings puts in order by the silt and the clay primarily. The light and shade interaction annulus of salt crust granulometric composition difference are showed that the saline lake passed by evolutionary process, because of the climate and temperature changes in turns, which causing the saline lake deposit ingredients have regular change results.

其中成人免费在线观看网址视频，黑色紋理處鹽殼含砂量增加最新国产三級片，而白色紋理處以粉粒和粘粒為主，明暗相間的環(huán)帶鹽殼顆粒組成差異是鹽湖向干鹽湖的演化過(guò)程中国产美女网在线看，由于氣候冷暖交替變化而使鹽湖沉積物成分發(fā)生規(guī)律性變化的結(jié)果全色黄大片一级AAA片大龄女。

In the horizontal direction, the salt crust granulometric composition by the thin change into thickening. It is obvious that has level deposition differentiation characteristic, but from the surface layer to the lower level, the sand grains of salt crust content size are more thicker than powder grains or slabby grains, which displays from thick to thin vertical and spatial distribution rule.

在水平方向上，鹽殼顆粒組成由細(xì)變粗caopo免费公开视频公开，具有明顯水平沉積分異特點(diǎn)国产精品日韩色无码中出，而從表層至下層鹽殼顆粒含量大小為砂粒﹥粉粒﹥粘粒，表現(xiàn)為由粗到細(xì)的垂直空間分布規(guī)律专业偷拍熟女在公司里偷星图片。

According to the variation in the components of intermediateacid igneous rocks coming from the lower crust, it is possible to restrain the depth of the source area and the minimum thickness of the crust, and thus to provide important information for the study of the deep process of the continental intraplate mineralizationGlobally, many world level porphyry copper deposits and metallogenic systems formed by hypabyssal hot liquid have their close relationship with the synchronous adakite in spacetime and genesis; domestically, the adakitelike rocks have been identified to be related to the metallogenesis in the main metallogenic areas in ChinaThe recognition of adakitelike rocks having no relationship with the process of subduction makes it possible to construct a metallogenic model of continental intraplate porphyry metal deposits by combining other geological evidences, and this model is totally different from the metallogenic model of porphyry copper deposits with Bsubduction setting constructed by Sillitoe (1972)The existence of adakitelike rocks may be the necessary condition but not the sufficient one for forming the largescale porphyry deposits and the hypabyssal hotliquid deposits, whose metallogenic elements mainly came from the mantleThe metallogenic potential of adakitelike rocks is achieved by the entering of the mantle material, and the metallogenic specialization of adakitelike rocks is decided by the distribution characteristics of the metallogenic elements in the upper mantleAn important reason for the adakitelike magma related to subduction being advantageous to mineralization is that there were abundant high pressure and high temperature liquid coming from the subducted platepieces and the magma of high fO2 coming from the melting of subducted platepiecesHowever, for those adakitelike rocks, whose occurrence has continental plate background but does not relate to the subduction, their metallogenic mechanism is not clear yetBased on the concept of modern mineral exploration and combined with the analysis of integrated geological information, we may better realize the practical prospecting significance of the adakitelike rocks

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Combined with available data, it is comidered that the sourcerock of biotite--leptynite might be intermediate-acid volcanic material of ca.2.7 Ga, and that of migmatized leptite and quartzite might come from granitic crust older than 3.0 Ga. The iron formation was formed on the continental crust base at about 2.7 Ga, and was immediately metamorphosed for the first time.

結(jié)合已有的研究資料可以認(rèn)為，黑云變粒巖的原巖來(lái)自2.7 Ga左右的中酸性火山物質(zhì)最新国产一级中文免费，淺粒巖和石英巖的原巖來(lái)自3.0 Ga以上的花崗質(zhì)地殼物質(zhì)三及A片人人看呢；含鐵建造形成于陸殼基底之上，形成時(shí)間約2.7 Ga男人操女的亚洲国产视频，并于2.5—2.7 Ga之間發(fā)生首次變質(zhì)作用色色色色色色色色色色网。

There is a long standing debate about the magma origin of Lutao. Two different models of crust contamination and source contamination are proposed. Combining helium results with strontium ratios of Lutao lavas, it shows that Lutao arc magma has experienced approximately 5% of crust contamination.

綠島巖漿成因長(zhǎng)久以來(lái)存在有地殼混染或是源區(qū)混染的爭(zhēng)論，本研究利用綠島斜輝石及堇青石巨晶的3He/4He比值及其母巖漿的87Sr/86Sr比值，得到了綠島巖漿經(jīng)歷過(guò)5%左右地殼混染的結(jié)果三级片黄色网站视频真人。

The result shows that well developed microbiotic crust results in less invalidation precipitation than sandy soil, but sandy soil conserves 18% precipitation in deeper layer when the soil covered with microbiotic crust had been dry completely.

結(jié)果表明日高清在线亚洲专区黄片，結(jié)皮和流沙地表的蒸發(fā)速率隨時(shí)間的變化趨勢(shì)基本相同，但在不同的蒸發(fā)階段具有各自不同的特點(diǎn)亚洲综合色图一区，總的說(shuō)來(lái)中文字幕强，發(fā)育良好的苔蘚結(jié)皮導(dǎo)致相對(duì)較少的無(wú)效降水，但在更長(zhǎng)的時(shí)間維持較高的蒸發(fā)速率综合精品视频一区二区；流沙和初步發(fā)育的降塵結(jié)皮導(dǎo)致了較多的無(wú)效降水www.4438日韩无码，但由于降水的入滲深度相對(duì)較深，需要更長(zhǎng)的時(shí)間完成蒸發(fā)過(guò)程免费射黄视频。

By study of the medium-acid plutonic rock and its maric microgranular enclaves of the middle Gangdis〓 belt, this dissertation will discuss the characteristics of the Gangdis〓 medium-acid plutonie magmatism and the crust/mantle dynamics during uplifting of Tibetan Plateau from the sight of material and energy, and use'lithoprobe'to connect crust and mantle interaction and other geologic events.

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The texture series in the crust reflect the variations in the marine environmental energy from high energy to low energy in its growth process, and the variations in oxyphile elements and detrital compositions in the crust recorded the variations in oxidation degree of ambient seawater and influence intensity of eolian dusts.

結(jié)殼構(gòu)造序列反映了其生長(zhǎng)過(guò)程中海洋動(dòng)力環(huán)境能量由高到低的變化；而殼層親氧元素和碎屑組分的變化則記錄了海水的氧化程度和風(fēng)塵影響強(qiáng)度的變化一级WWW。

According to the research of strata element contents, REE, stable isotope and wall rock alterations, ore forming substances are from both mantle and crust, and the ore deposit has the characteristics of mutiple metallogenesis and polygenetics, belonging to mantle crust polygenetic compound deposit .

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