助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   碎屑 在 地质学 分类中 的翻译结果: 查询用时:1.52秒
图标索引 在分类学科中查询
所有学科
地质学
石油天然气工业
海洋学
水产和渔业
口腔科学
临床医学
生物学
更多类别查询

图标索引 历史查询
 

碎屑     
相关语句
  clastic
    Forming Mechanism and Dominated Factors of the Reservoir of the Clastic Rock of the Upper Paleozoic in Northern Ordos Basin
    鄂尔多斯盆地北部上古生界碎屑岩储层形成机理及主控因素研究
短句来源
    Research on the Sequence Stratigraphy and Reservoir Physical Property of Clastic Stone of Paleozoic and Triassic in Akekule Uplift
    阿克库勒凸起古生界和三叠系碎屑岩系层序地层学与储层特征研究
短句来源
    THE DISTRIBUTION OF CLASTIC KAOLINITE IN MUDSTONE AND ITS SIGNIFICANCE IN THE STUDY OF SEDIMENTARY ENVIRONMENT
    泥岩中碎屑高岭石的分布及其在沉积环境研究中的意义
短句来源
    THE RELATIONSHIP BETWEEN GRAIN-SIZE DISTRIBUTIONS OF CLASTIC SEDIMENT AND CONDITIONS OF WATER POWER IN DEPOSITION
    碎屑沉积物的粒度分布与沉积水动力条件的关系
短句来源
    FORMATION OF CEMENT OF CLASTIC ROCKS IN THE JIUXI BASIN
    酒西盆地碎屑岩胶结物的形成问题
短句来源
更多       
  detrital
    FEATURES AND GEOLOGICAL SIGNIFICANCE OF QUATERNARY DETRITAL MINERALS FROM HOLE QC_5 IN NANTONG OF JIANGSU PROVINCE
    江苏南通QC_5孔第四系碎屑矿物特征及其地质意义
短句来源
    Ichnofossils and Their Sedimentary Environment of the Middle Devonain Detrital Strata in Dushan, Guizhou Province
    贵州独山中泥盆统碎屑岩地层的遗迹化石及其沉积环境
短句来源
    JUDGING PLATE TECTONIC BACKGROUNDS OF COAL BASINS FROM DETRITAL COMPOSITION OF SANDSTONES
    利用砂岩碎屑成分判断含煤盆地的板块构造背景
短句来源
    The detrital fission track data show that a tectonic activity occurred at about 8 Ma B P, resulting in the uplift of Jishishan and disintegration of Linxia-Xunhua basin (Zheng et al. , 2003).
    碎屑颗粒热年代学数据表明,构造活动发生在约8 Ma B P,这次构造活动使积石山开始隆升,使临夏盆地和循化盆地解体(郑德文等,2003)。
    THE DIAGENESIS OF THE SINIAN DETRITAL ROCK AND ARGILLITE IN THE EASTERN PART OF SOUTH CHINA
    中国南方东部震旦纪碎屑岩和泥质岩成岩作用
短句来源
更多       
  debris
    DEEP WATER CARBONATE DEBRIS FLOW IN THE MIDDLE ORDOVICIAN PINGLIANG FORMATION OF FUPING,SHAANXI
    陕西富平中奥陶统平凉组的深水碳酸盐碎屑
短句来源
    THE MIDDLE TRIASSIC DEBRIS FLOWS IN GUIZHOU PROVINCE
    贵州中三叠世碎屑
短句来源
    A HAzARD-CHAIN OF LANDSLIO→COLLAPSE→DEBRIS FLOW→RIVER STOPPAGE IN WULONG COUNTY,SICHUAN PROVINCE ON APRIL 30,1994
    1994-04-30四川省武隆县鸡冠岭滑坡→崩塌→碎屑流→堵江灾害链
短句来源
    Based on the survey data,the spatial distribution characteristics of surface sediment debris minerals in Shenzhen Dapeng Bay,Guangdong,are analyzed using the method of spatial analysis,geological statistics,interpolation and landscape ecology.
    立足样品测试数据,利用空间分析、空间插值、地质统计以及景观生态学方法,深入分析了深圳大鹏湾表层沉积物碎屑矿物的空间分布特征,并使用球状模型对相应半变异函数进行理论建模。
短句来源
    SPATIAL DISTRIBUTION CHARACTERISTICS OF SURFACE SEDIMENT DEBRIS MINERALS IN SHENZHEN DAPENG BAY,GUANGDONG
    深圳大鹏湾表层沉积物碎屑矿物空间分布特征
短句来源
更多       
  detritus
    Distribution Characteristics of Mineral Detritus in Surface Sediment From the Quanzhou Bay and Their Environmental Significance
    泉州湾海域表层沉积物矿物碎屑分布特征及其环境意义
短句来源
    Element analysis result indicate that sinking particulates in lagoon mainly come from biogenic detritus while part of particulates come from resuspend sediments in the seaward slope of reef.
    元素分析进一步显示珊瑚礁泻湖内沉降颗粒物主要是自生碎屑,而礁外沉降颗粒物包含了一部分再悬浮的碎屑矿物,但元素在泻湖内外的转移机制是类似的,造成颗粒物来源差别的主要原因是动力学因素。
短句来源
    The great variation in δ 13 C of zooplankton(-20.4‰ ~ -10.9‰) was suggested that there may exist two trophic sources -- phytoplankton and detritus.
    浮游动物的δ13C值变化较大 ,范围为 - 2 0 .4‰~ - 1 0 .9‰ ,表明可能存在浮游植物和碎屑两种营养来源 .
短句来源
    The reservoir is composed of fine-medium sandstones in Yingjisu area, Tarim basin. The components of sandstone are detritus(40\^86%~54\^43%), quartz(34\^79%~45\^45%) and feldspar (10\^68%~16\^82%). The cement content of of Carbonate and clay is 8\^9%.
    英吉苏地区侏罗系储层以细粒 -中粒碎屑岩为主 ,岩屑含量 40 .86%~ 5 4.43 % ,石英含量 3 4.79%~ 45 .45 % ,长石含量 10 .68%~ 16.82 % ,碳酸盐和泥质胶结物含量为 8.9% ,属低成熟度岩屑砂岩 ;
短句来源
    Magnetic susceptibility datum of 1009 samples from 8 well detritus analyzed and reservoir model provided in profile and plan.
    基于这个认识,对取自8口井的1009件碎屑岩磁性样品进行了分析,对碎屑岩储层性质进行了岩石磁学描述。
短句来源
更多       

 

查询“碎屑”译词为其他词的双语例句

     

    查询“碎屑”译词为用户自定义的双语例句

        我想查看译文中含有:的双语例句
    例句
    为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
      clastic
    The Zhongpu Group is distributed in the Shihuigou area and composed of medium-basic volcanic rocks and volcanic clastic rocks interspersed with cherts, limestones, slates, and metamorphic sandstones.
          
    Triassic clastic sedimentary rocks contain Late Paleozoic mantle-derived materials, represented by the Emeishan Permian flood basalts.
          
    Many achievements have been made in experimental studies of hydrocarbon migration in the clastic reservoir.
          
    It is shown that clastic quartz in the Riphean basal complexes was mainly related to denudation of the Lower Proterozoic platformal cover, whose rocks occur as fragments in the Riphean conglomerates.
          
    It was established that the polygenic microscopic gold can be divided into at least clastic, authigenic, and clastic-authigenic types.
          
    更多          
      detrital
    Elemental and Sm-Nd isotopic geochemistry on detrital sedimentary rocks in the Ganzi-Songpan block and Longmen Mountains
          
    Systematic results of major and trace element geochemistry and Sm-Nd isotopic geochemistry on detrital sedimentary rocks of Precambrian to Triassic in the Ganzi-Songpan block and Longmen Mountains are presented.
          
    Cenozoic uplift of West Qinling, northeast margin of Tibetan plateau-a detrital apatite fission track record from the Tianshui b
          
    Thermochronologic study on the detrital apatite grains from sandstones at Yaodian, near Tianshui, has revealed two rapid tectonic uplift-exhumation events of the source area, which happened at 23.7 and 14.1 Ma, respectively.
          
    Fission-track dating of zircon showed that sandstones from this zone contain detrital zircon of several different-age populations.
          
    更多          
      debris
    Concept and Classification of Coarse Woody Debris in Forest Ecosystems
          
    Coarse woody debris (CWD) is generally considered as dead woody materials in various stages of decomposition, including sound and rotting logs, snags, and large branches.
          
    Experimental data are analyzed that concern the effect of zoogenic debris on the properties of soddy deep podzolic soils and raw-humus brown soils characteristic of southern taiga forests in the Yenisei region of Siberia.
          
    Zoogenic plant debris falling on the ground surface during tree stand defoliation is a short-acting but powerful stimulant of biological activity in the litter; hence, it has a considerable effect on soil properties.
          
    The results of experimental studies on the contribution of zoogenic debris to transformation of soil properties in the southern taiga subzone of Central Siberia are analyzed.
          
    更多          
      detritus
    Representatives of gamasid (three species) and uropodid (two species) mites abundant in storm detritus were used as model species.
          
    Unbalanced composition of higher trophic levels results in an unstable functioning of the lake and accumulation of significant amounts of detritus, which is utilized by the abundant microzoobenthic component of the ecosystem.
          
    As against zooplankton, the biomass of zoobenthos features much less contingencies with the biomass of microalgae as well as zooplankton, since detritus, higher plant tissues, and small animals are the basis of the diet of benthic organisms.
          
    Specific structural features of giant fishbone detritus accumulations, which represent organic phosphate deposits with uranium and rare earth elements, are scrutinized.
          
    The obtained results have made it possible to reconstruct paleotectonic and paleogeographic conditions of the formation of orebodies, as well as the mechanism for the accumulation of metalliferous bone detritus.
          
    更多          


    As a lofty mountain Nanshan stretches along the southern border of Kansu Corridor. In past two decades a few discussions had been given by some sdholars about its landforms and its quaternary glaciations. Based upon my field works and recent reports, we know that there are some close Connections existed between tectonic movements, geomorphic cycles and correlative deposits; and, Consequently, they may be mutually explained. according to the analysis of the facies and distribution of Cenozoic sediments, We Know...

    As a lofty mountain Nanshan stretches along the southern border of Kansu Corridor. In past two decades a few discussions had been given by some sdholars about its landforms and its quaternary glaciations. Based upon my field works and recent reports, we know that there are some close Connections existed between tectonic movements, geomorphic cycles and correlative deposits; and, Consequently, they may be mutually explained. according to the analysis of the facies and distribution of Cenozoic sediments, We Know that there a peneplanation developed on the older rocks of Nanshan till pper pliocene, and the red deposits which extended over the Nansban and its adjacent regions Were laden down in the same time. Probably laterly, a crusalt movement, which included mul iple uplifts, initiated. The present geomorphic features of Nanshan are possibly resulted from them. as the dissected summit-levels, the remnants of old peneplains Can be found on many mountain tops today. As regards quaternary glaciations of Nanshan, a more important sign ification should be ascribed to the uplifts of this mountain. Perhaps boh because of the uplifts and the Climatic changs, in Nanshan two glacio pluvial periods had occured in quaternary. When the glaciers expanded all of the mountain peaks and valleys. Later on, the glacio fluvial waters were Carrying much debris and forming sedimentary units, which have been called inland molasse formation, into piedmont plain. a distinct interval, which indicat a true interglacial stage, have been found in that formation. The following table shows the main geological changes of Cenozoic of Nanshan.

    河西走廊之南延伸着雄伟的祁连山,在过去20年中一些学者曾对该山的地貌和其第四纪冰期作过一些探讨。根据本人的野外工作及最近的文献资料,我们看到,在构造运动、地貌循环和相关沉积三者之间有着紧密的联系,因而,它们可以相互解释。分析岩相和新生代沉积的分布,我们得知直到上上新世,祁连山进行着准平原化的过程,同时并沉积下红色沉积,它遍及祁连山内外。后来,地壳运动开始,它包括多次上升。现代的祁连山的面貌即是多次上升的产物。古准平原的遗跡,目前可在许多山顶发现。祁连山的第四纪冰期的发生,山地上升占有重要地位,可能正是由于上升和气候变化的同时作用,祁连山发生两次冰期——多雨时期。当时冰川遍及山峰和谷地,稍后,冰融水携带大量碎屑物质带入山足平原形成内陆磨拉石建造的沉积。在该沉积岩系中发现有一清楚的间断,这代表一次真正的间冰期。祁连山新生代的主要地质事件见84页附表。

    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 methed), 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,...

    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 methed), 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 29—40%, muscovite (sericite) 3—7%, with minor amount of microcline, and apatite and magnetite as accessories. Microscopically, the rocks possess obvious successive replacement features. Earlier soda-metamorphism forms albite motacrysts, which include residual masses 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 replacement is: soda-metamorphism → Soda-silica metasomatism → potassium metasomatism → 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. Mineralogically, they are composed of albite, epidote, chlorite, magnetite calcite, sodic actinolire, etc. Similarly, the spilites also show obvious features of sodic replacement. Sugary grains of albite cut or replace earlier-formed albite, forming zigzag boudaries around the latter. All the above features indicate that, both the quartz keratophyres and the spilites were formed as a result of successive soda metamorphism (soda replacement). The petro-chemical characters of the quartz keratophyres and the spilites are as shown in the following table: 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 plotting methods, it is brought out that the metamorphosed volcanics of the Changbaling area belong to sub-alkaline volcanic series, being sodic spilite-quartz keratophyre series. The spilites and quartz keratophyres are comagmatic rocks, and their primary magma was probably intermediate to acidic in character. According 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 probably 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 different from those spilites or spilite-keratophyre series with the basic componemts constituting the major parts, which represent probably earlier basic volcanic phases deposited in some deep eugeosynclines, or close to some spreading center of ancient sea floor. Of Course, they are also different from the andesiterhyolite series of continental origin. The primary magma here was probably intermediate 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 voicanics 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、低温完全有序的钠长石(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,其热液蚀雯温度为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积物中钠质的混染,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...

    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、低温完全有序的钠长石(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,其热液蚀雯温度为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积物中钠质的混染,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。

    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。

     
    << 更多相关文摘    
    图标索引 相关查询

     


     
    CNKI小工具
    在英文学术搜索中查有关碎屑的内容
    在知识搜索中查有关碎屑的内容
    在数字搜索中查有关碎屑的内容
    在概念知识元中查有关碎屑的内容
    在学术趋势中查有关碎屑的内容
     
     

    CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
    版权图标  2008 CNKI-中国知网
    京ICP证040431号 互联网出版许可证 新出网证(京)字008号
    北京市公安局海淀分局 备案号:110 1081725
    版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社