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蚀变     
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  altered
    THE HYDROTHERMAL TYPE GOLD DEPOSIT IN ALTERED ULTRABASIC ROCK——A Discussion about the Origin of Jin Chang Gold Deposit
    超基性岩蚀变热液型金矿床——云南金厂矿床成因探讨
短句来源
    THE GEOLOGICAL CHARACTERISTICS OF ALTERED ROCK TYPE Au/Ag DEPOSITS IN MIGMATITE REGION, SOUTHEASTERN GUANGXI
    桂东南混合岩区蚀变岩型金银矿床地质特征
短句来源
    STUDY ON THE TECHNOLOGICAL MINERALOGY OF THE ORES FROM THE—145 LEVEL GOLD DEPOSIT OF ALTERED—ROCK TYPE IN XINCHENG, LAIZHOU CITY
    莱州新城蚀变岩型金矿—145米中段选矿工艺矿物学研究
短句来源
    AN INVESTIGATION ON GEOLOGICAL-GEOCHEMICAL CHARACTERISTICS OF ALTERED ROCKS IN SHAXI PORPHYRY COPPER (GOLD) DEPOSIT,ANHUI PROVINCE
    安徽沙溪斑岩铜(金)矿床蚀变岩地质地球化学特征研究
短句来源
    AN INVESTIGATION ON GEOLOGICALGEOCHEMICAL CHARACTERISTICS OF ALTERED ROCKS IN SHAXI PORPHYRY COPPER(GOLD) DEPOSIT, ANHUI PROVINCE
    安徽沙溪斑岩铜(金)矿床蚀变岩地质地球化学特征研究
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  alteration
    A Study on Methods Used to Quantitatively Extract Mineralized Alteration Information from ETM Data
    基于ETM数据矿化蚀变信息定量提取方法研究
短句来源
    A PRELIMINARY UNDERSTANDING OF THE 6241 ORE DEPOSIT——ITS WALL ROCK ALTERATION AND URANIUM MINERALIZATION
    6241铀矿床围岩蚀变、矿化特征及成因初步认识
短句来源
    STUDY ON THE FORMATION OF SKARN IRON DEPOSIT IN THE SOUTH HEBEI FROM THE TYPOMORPHIC CHARACTERISTICS OF METASOMATIC ALTERATION MINERAL
    从交代蚀变矿物标型特征研究冀南矽卡岩型铁矿床的形成
短句来源
    CHARACTERISTICS OF MINERALIZED ALTERATION ZONE IN WOXI Au—Sb—W DEPOSIT WESTERN HUNAN
    湘西沃溪金锑钨矿床矿化蚀变带特征研究
短句来源
    A COMBINATION METHOD FOR MULTI-SYSTEM PHASE DIAGRAMS AND ITS APPLICATION TO THE ALTERATION OF GRANITOIDS
    一种多体系相图拼合方法及其在花岗岩类蚀变过程中的应用
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  alteration information
    A Study on Methods Used to Quantitatively Extract Mineralized Alteration Information from ETM Data
    基于ETM数据矿化蚀变信息定量提取方法研究
短句来源
    SPECTRAL CHARACTERISTICS OF SOIL IN JIANGHAN BASIN AND THE EXTRACTING METHOD OF HYDROCARBON MICROSEEPAGE ALTERATION INFORMATION
    江汉含油气盆地土壤光谱特征及烃类蚀变信息提取方案
短句来源
    Preprocessing of TM Data and Study of Extraction Method of Alteration Information in Dongping Area
    TM数据预处理及东坪地区蚀变信息提取方法研究
短句来源
    Extraction Mechanism of Alteration Information on Finedisseminated-type Gold Deposits in Qian Gui Area
    黔桂地区微细浸染型金矿蚀变信息提取机理
短句来源
    A METHOD OF TM REMOTE SENSING DATA USED IN EXTRACTING GOLD MINERALIZED ALTERATION INFORMATION
    利用TM数据进行金矿化蚀变信息提取方法探讨
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  aiteration
    The paper studies the country rock aIteration type and alteration zones of 113 goldquartz veins in Wulashan and the each zone' s macro-element(K,Na,Fe,Si)ore-form. ing element(Au,Cu,Pb,Zn)of distribution characters. The cluster analysis and R typefactor analysis are adopted in order to disscuss the character of element composition andrelationship between alteration and mineralize.
    本文研究了乌拉山金矿带113含金石英脉的围岩蚀变类型,蚀变分带及各带的常量元素(K、Na、Fe、Si),成矿元素(Au、Cu、Pb、Zn)的分布特征,用聚类分析,R型因子分析讨论了元素组合特征和蚀变与矿化的关系。
短句来源
    Theuranium information was extracted in quantity from spectrum image so that the structure aIteration zone can be revealed geochemically for ore exploration accordingto rock reflectance characteristics.
    研究岩石反射光谱特征,突出找矿蚀变信息;
短句来源
    In the light of the characteristics and the intercalating relationship of the silication,the silication of the gold - bearing silicated aIteration zone in southern Yangxin, can be divided into four stages.
    湖北阳新南部的含金硅化蚀变带,据硅化特征及穿插关系,硅化可分四个阶段。
短句来源

 

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  altered
Hepatic glutathione, lipid peroxides, glutathione peroxidase, alcohol dehydrogenase, aldehyde dehydrogenase, glycogen and total protein in liver were also significantly altered.
      
Picroliv significantly reverted most of the above said altered blood and hepatic parameters in the alcohol-fed male and female rats to almost normal levels.
      
QSAR reveals that if partition coefficient, connectivity index, and shape index of these molecules are altered, the activity is likely to increase.
      
The pyrolysis process of wood was altered and the yield of volatile pyrolytic products was decreased by FRW treatment.
      
Our study proved that changes in precipitation significantly altered the litter quality, and therefore indirectly changed the decay process of leaf litters.
      
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  alteration
Thus, they can be used as evidence for image source identification and alteration detection.
      
Hydrocarbon source rocks are characterized by the hydrocarbon discharge, and the alteration and variation in organic compositions and organic content due to the enhanced thermal maturation.
      
Marine extremophiles might play an important role either directly or indirectly in the processes of hydrocarbon formation and subsequent alteration, and could indicate the evolution of hydrocarbon resources in marine extreme environments.
      
The assumption was made that the oncogenic potential of rol genes is realized through the alteration of calcium balance in the plant cells.
      
Tumor cells are characterized by a paradoxical alteration of DNA methylation pattern: global DNA demethylation and local hypermethylation of certain genes.
      
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  alteration information
The dataset used in the modeling includes apparent resistivity fields, soil geochemical samples, lithological and alteration information, and structural data.
      
Forwarding and packet alteration information is identified by the results of the search.
      
Forwarding and packet-alteration information is identified by the results of the search.
      
  aiteration
Adit is in Carbonate Mariposite aiteration zone in the area.
      
Aiteration of a lepidopteran peritrophic membraneby baculoviruses and enhancementof viral infectivity.
      
The h$nelationof facet degeneration to disc aiteration which has been found in may occur in humansyet the issue remains controversial.
      
  其他


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本文引述了经镓在花岗岩类气成一热液蚀变岩石中的含量分布和镓铝比值资料,并对镓在该作用过程中的地球化学行为进行了探讨。获得的结果表明,镓在云英岩化作用、碱质蚀变作用和矽嘎岩化作用中的性状各有一定特征,一般说来镓在花岗岩类的云英岩化和矽嘎岩化作用中同铝有着相似的活动历史,而在碱质交代过程中其迁移与堆积则与铝无关。镓在所有蚀变岩石中均处於分散状态,主要是呈类质同象混入物的形式存在於各种铝硅酸盐矿物之中。依据镓在花岗岩体中的含量分布特点,除了指示岩石所受蚀变交代作用的种类、蚀变程度的深线,有助於成岩、成矿作用的发展演化和介质的酸碱性变化等重要地质理论问题的解决之外,鉴於一系列稀有元素在蚀变岩体中的分布与镓含量之间呈一定的正比伴随关系,因此可以设想,它还可作为在花岗岩中普查稀有金属矿床的一个可能的地球化学标志。

A complex suite of intermediate-basic to intermediate-acid and relatively alkaline volcano-intrusive rocks of dominant andesitic composition and a group of iron ore deposits of somewhat different genetic types associated with them, including late magmatic, pegmatitic, pneumato-hypothermal, pyrometasomatic, meso- to epithermal deposit and the possible ore-magmatic and volcanic-sedimentary deposits, which are the successive products of the magmatic evolution, widely distributed in the faulted basins in the middle-lower...

A complex suite of intermediate-basic to intermediate-acid and relatively alkaline volcano-intrusive rocks of dominant andesitic composition and a group of iron ore deposits of somewhat different genetic types associated with them, including late magmatic, pegmatitic, pneumato-hypothermal, pyrometasomatic, meso- to epithermal deposit and the possible ore-magmatic and volcanic-sedimentary deposits, which are the successive products of the magmatic evolution, widely distributed in the faulted basins in the middle-lower Chang Jiang valley. This series of iron ore deposits essentially represents the products of the successive stages from high to low temperature in the ore forming process, their distributions are chiefly controlled by their spatial relationship to the subvolcanic gabbrodiorite porphyrite bodies. The ores are essentially composed of diopside (actinolite)-apatite-magnetite, and magnetite contains vanadium and titanium. They have unique structures and types of wall rock alterations.

在长江中下游的若干断陷盆地中,发育着一套中、基性到中、酸性而含碱较高的、并以安山质为主的火山-侵人杂岩,与这一套有关的岩浆的演化过程相联系,形成一组从岩浆晚期到伟晶、高温气液、高温接触交代、中、低温热液及可能的矿浆充填、火山喷发沉积成因的铁矿床。这一组铁矿床在时间上基本代表成矿作用各个阶段由高温到低温的转变过程,在分布上主要受它们和辉长闪长玢岩次火山岩体的空间关系所控制。矿石以透辉石(阳起石)-磷灰石-磁铁矿为基本矿物组合,含一定数量的钒、钛,具有特殊的围岩蚀变及矿床构造。在以往报导中,此类产于安山质火山岩分布区的透辉石(阳起石)-磷灰石-磁铁矿矿床常被不同作者归入不同成因类型,这组矿床的多样性可能是产生这种情况的主要原因。长江中下游若干盆地中的这组铁矿发育较好,也可作为一个有代表性的例子。由于它们和辉长闪长玢岩的成因联系以及矿床本身的次火山成因特点,本文特称之为“玢岩铁矿”。

The studied area is located some 70—80 km.northwest of Nanking of the Kiangsu province.This area is composed of complexly folded late pre-Cambrian metamorphics,deeply eroded to a peneplane.The Changbaling formation is of late Sinian age(dated to be 864—1,026 m.y.by Uranium-lead method),and comprises volcanics of submarine origin and marine sediments,consisting chiefly of a thick series of quartz keratephyres interealated with minor amount of spilites and related volcanic clastics and tufaceous sediments.accompanied...

The studied area is located some 70—80 km.northwest of Nanking of the Kiangsu province.This area is composed of complexly folded late pre-Cambrian metamorphics,deeply eroded to a peneplane.The Changbaling formation is of late Sinian age(dated to be 864—1,026 m.y.by Uranium-lead method),and comprises volcanics of submarine origin and marine sediments,consisting chiefly of a thick series of quartz keratephyres interealated with minor amount of spilites and related volcanic clastics and tufaceous sediments.accompanied by marine chert beds,dolomitic limestone lenses,siltstones,and shales.The whole series has suffered to a low-grade regional metemorphism,corresponding to the green schists facies. The rocks of the quartz keratophyres possess porphyritic textures and some rhyolitic flow structures.Their principle mineral constituents are albite 55—70%, quartz 20—40%,muscovite(sericite)3—7%,with minor amount of microcline, and apatite and magnetite as accessories. Microscopi(?)ally,the rocks possess obvious successive replacement features. Earlier soda-metamorphism forms albite motacrysts,which include residual mas- ses of orthoclase.Later soda-metamorphism(metasomatism)is represented by albito-quartz veinlets,which cut the earlier albite metacrysts,and also form minute polysynthetically twinned albite rims around their borders.Still later comes some microcline which replaces earlier albite along its cleavage planes and grain borders.Last is silicification.Thus,the sequence of metasomatic repla- cement is:soda-metamorphism→Soda-silica metasomatism→potassium metaso- matism→silicification. Corroded quartz phenocrysts contain minute melting inclusions with some devitrification effects,of which,the temperature of homogenization is measured to be 1,030—1180℃.The decrepitation temperature of the liquid inclusions which occur along certain zones in the bordering parts of quartz crystals,is measured to be 300℃. The spilites here occur as intercalated beds in the quartz keratophyre series, and partly they form dikes or some other sub-volcanic forms.MineralogicaUy, they are composed of albite,epidote,chlorite,magnetite calcite,sodic actinol- ire,etc.Similarly,the spilites also show obvious features of sodie replacement. Sugary grains of albite cut or replace earlier-formed albite,forming zigzag bou- daries around the latter.All the above features indicate that,both the quartz keratophyres and the spilites were formed as a result of successive soda meta- morphism(soda replacement). The petro-chemical characters of the quartz keratophyres and the spilites are as shown in the following table: oxides% rock types SiO_2 K_2O+Na_2O Na2_O K_2O CaO MgO FeO+Fe_2O_3 quartz keratephyres >70(71—78) (?)5—8 >5 1.5± 0.45 0.37 2.13 spilite >40(41—55) >6(4—8) ≈5 0.5± 4.13 3.46 15.65 Based upon the petro-chemical properties and the plotting of the data,as Calculated from a large number of rock analyses,according to the various plot- ting methods,it is brought out that the metamorphosed volcanics of the Chang- baling area belong to sub-alkaline volcanic series,being sodic spilite-quartz ke- ratophyre series.The spilites and quartz keratophyres are comagmatic rocks,and their primary magma was probably intermediate to acidic in character.Accord- ing to the geologic environments for the formation of the associated sedimentary strata,the volcanic rock combination,and their petrologic and petrochemical char acteristics,the writers are inclined to think,that,such a volcanic-sedimentary series with the acidic volcanic components constituting the major part,was prob- ably formed in rather shallow seas near some continental margin,or close to some island arc during the early stage of development,and that,they are dif- ferent from those spilites or spilite-keratophyre series with the basic compo- nemts constituting the major parts,which represent probably earlier basic vol- canic phases deposited in some deep eugeosynclines,or close to some spreading center of ancient sea floor.Of Course,they are also different from the andesite- rhyolite series of continental origin.The primary magma here was probably inter- mediate to acidic in character,which has differentiated into the acidic and basic extremities.During the course or fractional crystallization,the magmas were contaminated by soda from the sea water and the marine sediments,and later the volcanics suffered from soda metamorphism and metasomatism during the time of deep burial and later regional orogenesis and metamorphism.Such is the writers' idea about the origin of the spilite-Quartz keratophyre series here.

前寒武纪张八岭建造是一套海底喷发的火山岩系,其原岩由大量石英角斑岩和少数细碧岩及其火山碎屑岩、凝灰质沉积岩组成,并与海相的硅质岩、白云质石灰岩透镜体、粉砂岩、页岩等伴生。受区域变质作用影响,形成绿片岩相的矿物组合。岩石具典型的熔岩组构。主要矿物成分为:石英、低温完金有序的钠长石(An<5)和绿泥石、绿帘石、磁铁矿等。岩石有明显的交代观象,其交代顺序为:钠化→钠硅化→钾化→硅化。据玻璃质固化包裹体测温,其岩浆温度为1030—1180℃;液相包裹体测温,其热液蚀变温度为300℃。由岩石化学分析资料说明:变质火山岩为弱碱质钠质细碧岩——石英角斑岩系。两者为同源岩浆岩。其原始岩浆成分为——中酸性岩浆。经分异作用,主要向酸性岩浆转化;少量向基性。在岩浆结晶分异的同时并遭受海水及海相沉枳物中钠质的混染,成为富钠质的岩浆,逐渐演变成富钠的透岩浆溶液,发生钠质交代,这种作用继续延到岩浆期后的热液期。其后岩石又经低级区域变质作用,形成石英角斑岩及细碧岩。根据变质火山岩的岩石学、岩石化学及火山岩中伴生岩石特征等地质,因素,说明:它形成于浅海环境,靠大陆边沿,或岛弧。它是以酸性火山岩为主的,细碧岩——石英角斑岩系,与产...

前寒武纪张八岭建造是一套海底喷发的火山岩系,其原岩由大量石英角斑岩和少数细碧岩及其火山碎屑岩、凝灰质沉积岩组成,并与海相的硅质岩、白云质石灰岩透镜体、粉砂岩、页岩等伴生。受区域变质作用影响,形成绿片岩相的矿物组合。岩石具典型的熔岩组构。主要矿物成分为:石英、低温完金有序的钠长石(An<5)和绿泥石、绿帘石、磁铁矿等。岩石有明显的交代观象,其交代顺序为:钠化→钠硅化→钾化→硅化。据玻璃质固化包裹体测温,其岩浆温度为1030—1180℃;液相包裹体测温,其热液蚀变温度为300℃。由岩石化学分析资料说明:变质火山岩为弱碱质钠质细碧岩——石英角斑岩系。两者为同源岩浆岩。其原始岩浆成分为——中酸性岩浆。经分异作用,主要向酸性岩浆转化;少量向基性。在岩浆结晶分异的同时并遭受海水及海相沉枳物中钠质的混染,成为富钠质的岩浆,逐渐演变成富钠的透岩浆溶液,发生钠质交代,这种作用继续延到岩浆期后的热液期。其后岩石又经低级区域变质作用,形成石英角斑岩及细碧岩。根据变质火山岩的岩石学、岩石化学及火山岩中伴生岩石特征等地质,因素,说明:它形成于浅海环境,靠大陆边沿,或岛弧。它是以酸性火山岩为主的,细碧岩——石英角斑岩系,与产于优地槽(或大洋扩张部位)发展早期的蛇绿岩套;包括基性,超基性岩,硅质岩及以基性组分为主的细碧岩——角斑岩建造是迥然不同的。它与岛弧晚期阶段的陆相安山岩——流纹岩也有一定的差别,可能是岛弧早期的产物。

 
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