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
   石英-长石 在 地质学 分类中 的翻译结果: 查询用时:0.113秒
图标索引 在分类学科中查询
所有学科
地质学
更多类别查询

图标索引 历史查询
 

石英-长石
相关语句
  quartz-feldspar
    Coexisting minerals quartz, feldspar and biotite vary widely in δ18O values and display a conspicuous 18O/16O disequilibrium relation; especially, a quartz-feldspar reversal (△18OQ-F<0) exists in the Aral granite pluton, Altay Mountains, northern Xinjiang.
    新疆阿尔泰阿拉尔花岗岩中共生石英、长石、黑云母的δ~(18)O值具有宽广的变化范围,3者表现出显著的~(18)O/~(16)O不平衡关系,尤其是石英、长石具有倒转△~(18)O_(石英-长石)关系(△~(18)O_(石英-长石)<0)。
短句来源
    Beside heterogeneous ~(18)O depletion, oxygen isotope temperatures show that some mineral pairs (quartz-garnet) achieved and preserved equilibrium during the eclogite-facies metamorphism (600 to 950℃), and the others (quartz-feldspar, dolomite-futile) achieved oxygen isotnpe reequilibration during amphibolite-facies retrograde metamorphism (350 to 570℃) subsequent to the eclogite-facies metamorphism.
    石英-石榴石等高温矿物对的氧同位素温度为600~950℃,指示它们在榴辉岩相变质条件下达到并保存了氧同位素平衡。 而部分石英-长石和白云母-金红石等矿物对的氧同位素温度为350~570℃,指示它们在峰期变质之后的角闪岩相退变质过程中达到并保存了同位素退化交换再平衡。
短句来源
    Oxygen isotope temperatures for one granitic gneiss sample show that the quartz-granet pair achieved and preserved oxygen isotope equilibrium during the eclogite-facies metamorphism (685℃), and the quartz-feldspar pair achieved oxygen isotope reequilibration during retrograde metamorphism (355 to 405℃). This indicates that the Sm-Nd system in the minerals was closed during retrogression.
    对于在角闪岩相退变质之后保存了封闭体系的花岗片麻岩样品(石英-长石矿物对温度为355~405℃),石榴石在榴辉岩相变质温度下达到并保存了氧同位素平衡(石英-石榴石矿物对温度为685℃),指示石榴石中Sm-Nd体系在同样的变质务件下也达到了平衡。
短句来源
查询“石英-长石”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。
  quartz-feldspar
A mechanism is proposed to explain the genesis of biotite-quartz-feldspar plagiomigmatite leucosomes as a consequence of the reaction of an amphibolite protolith with ascending fluid.
      
Regular quartz-feldspar (graphic) and two-feldspar intergrowths are typical of granitic pegmatites.
      
In the course of evolution of the Kronotsky island arc, all these elements were overlapped by tephrogenic turbidites (Pikezh Formation) and quartz-feldspar graywackes (Pikezh Sandstone) that were involved in the accretionary prism as well.
      
In the Eocene, a considerable amount of quartz-feldspar sediments enriched in radiogenic Nd was consumed in the subduction zone, which resulted in a strong contamination of magmas derived from the garnet lherzolites of the mantle wedge.
      
The Pancarli Ni-Cu mineralization is located in the metamorphic sequence of the Bitlis massif consisting of biotite gneiss, quartz-feldspar gneiss, amphibolite, and metagranitic rocks.
      
更多          


While linear relationship exists between porosity and depth of burial of sandstones at the northern flank of Bei Dagang structural zone, the opposite is true in the case of the sandstones at the southern flank, where at the depth of less than 3,500 meters, the porosity of sandstones decreases with their increasing depth till 3,500 meters when the curve assumes an upward trend, and at 4,000 meters there occur sandstones with an average porosity of 14% to the maximum porosity of 20%. This is attributable to the...

While linear relationship exists between porosity and depth of burial of sandstones at the northern flank of Bei Dagang structural zone, the opposite is true in the case of the sandstones at the southern flank, where at the depth of less than 3,500 meters, the porosity of sandstones decreases with their increasing depth till 3,500 meters when the curve assumes an upward trend, and at 4,000 meters there occur sandstones with an average porosity of 14% to the maximum porosity of 20%. This is attributable to the preservation of a part of the primary porosity in the rocks due to the formation of high porosity pressure. The increase of porosity pressure may effectively check the action of compressive solution at the granular contacts and reduce the extent of secondary enlargement of quartzites and feldspars. It is presumed that the high porosity pressure is resulted from differential compaction of sandstones and mudstones in the process of their diagenesis.

北大港构造带北翼砂岩孔隙度与深度的关系为直线型,而南翼砂岩孔隙度与深度的关系为曲线型。南翼在3500米以上,砂岩孔隙度随深度增加而减少,到3500米有回升趋势,而在4000米的深处还有平均孔隙度为14%,最大孔隙度20%的砂岩。这种现象产生的原因是保持了一部分原有孔隙度,而保持孔隙度的控制因素是形成高孔隙压力。由于孔隙压力的增高可以有效地减低颗粒接触处的压溶作用和石英长石次生加大的范围,而这种高压往往由于砂泥岩差异压实作用的结果。

Three of the fluvial reaches: upper, middle and lower, in the plains, 180 km in length, have been chosen for the study of recent sedimentation of the Futou River. We have analysed and studied sedimentary structure. grain-size, light and heavy mineral, and quartz surface texture of sediments in the main channel, longitudinal bar, point bar and natural levee respectively.All of the vertical sequences of the subfacies are the products of flood-dry stages. That is, during the flood stage, the beddings of the vertical...

Three of the fluvial reaches: upper, middle and lower, in the plains, 180 km in length, have been chosen for the study of recent sedimentation of the Futou River. We have analysed and studied sedimentary structure. grain-size, light and heavy mineral, and quartz surface texture of sediments in the main channel, longitudinal bar, point bar and natural levee respectively.All of the vertical sequences of the subfacies are the products of flood-dry stages. That is, during the flood stage, the beddings of the vertical section of longitudinal bar are lagdeposits horizontal beddings which reflect upper flow regime, or large-scale cross tabular beddings and large-scale trough beddings from below. With the hydrodynamic dwindling, small-scale trough beddings, and undulate and parallel beddings appear.The total thickness of the longitudinal bar is about 1 m, the thickness of point bar being over 2 m.One of the fundamental methods adopted in this paper is grain-size analysis which can reflect the hydrodynamic condition during sedimentation. The research on grain-size suite in subfaces would be helpful to reconstruct the depositional environment of paleofluviation.Good results can be obtained if a mixed content of heavy mineral and light mineral is used to analyse fluvial deposits, and the subfacies can be divided on the basis of the percentage of hornblend, quartz and feldspar.Electrical scan on quartz surface is at the initial stage. but surely it will play a specific role in the days to come.

在滹沱河平原段180公里范围内,选取上、中、下三个河段。对各段的主河道相、心滩相、边滩相及天然堤相分别进行了沉积构造、粒度结构、轻重矿物和石英表面结构的分析研究。各亚相垂向沉积层序是河流洪——枯水期水动力变化的产物。例如:洪水期心滩剖面自下而上层理表现为:滞留砂砾层中的低角度斜层理(5°~10°),高流态的平行层理或大型板状斜层理,大型槽状斜层理;随着水流的减弱,相继出现小型槽状斜层理及砂波交错层理、水平层理.心滩相整个沉积厚度为1.0米左右。边滩相剖面中层理表现为:洪水期由河床侧向运移而形成的滞留砂砾层中的低角度斜层理,大型槽状斜层理或多丛系大型交错层理,随着水流减弱,层理为小型槽状或小型板状,砂波交错层理及水平层理。边滩相的沉积厚度大于2.0米。粒度分析能反映沉积物沉积时的水动力条件。轻重矿物含量的组合分析效果较好,其中角闪石、石英长石百分含量可作为划分本河流亚相的重要依据。通过扫描电子显微镜,研究各亚相石英颗粒表面结构的组合特征,可作为沉积环境分析的辅助标志。

Usually there are three kinds of fluid inclusions in Tertiary sedimentaryrocks in Qaidam Basin:primary,secondary and hereditary.Among them themost important information for oil and gas exploration are provided by pri-mary fluid inclusions formed in diagenetic stage.The pressure measurement ofthe inclusions indicates that there is an abnormal high pressure body in thelower Ganchaigou Formation in the south part of the western Qaidam Basin.Oil pools of the red beds just preserved in this body.The reservoir voids...

Usually there are three kinds of fluid inclusions in Tertiary sedimentaryrocks in Qaidam Basin:primary,secondary and hereditary.Among them themost important information for oil and gas exploration are provided by pri-mary fluid inclusions formed in diagenetic stage.The pressure measurement ofthe inclusions indicates that there is an abnormal high pressure body in thelower Ganchaigou Formation in the south part of the western Qaidam Basin.Oil pools of the red beds just preserved in this body.The reservoir voids aremainly residual primary pores and non-fractured secondary pores in sandstone.So many pores could be preserved because the abnormal high pressure of porefluids keep quartz and feldspar from pressure-solution and the impermeablebeds block the outside siliceous solution source.So the quartz and feldsparcan not overgrow.Oil composition show that source rocks are mainly laterallacustrine synchronous deposits of the red beds,while oil from overlyingand underlying source rocks can not enter the trap in large quantity.Ac-cording to the temperature determination of fluid inclutions,the oil genera-ted and entered the trap when paleotemperature was 78℃.It is 26℃ lowerthan the threshold temperature calculated formerly.If other conditions remainedconstant,the quantity of oil generated in western Qaidam Basin shouldbe much more than that calculated.The time of generation,migration andaccumulation of oil and gas might start approximately from the Late Mioceneand continued to the Late Pliocene.To compare the sedimentary characters of the southern part with that ofthe northern part of the western Qaidam Basin,one can see that the forma-tion of abnormal high pressure is mainly due to easy closing of the smalldeltaic sandstone bodies and the diluvial sandstones and conglomerates withinlacustrine mudstones,thus the pressure could be accumulated by rapid deposi-tion of overlying sediments and differential compaction.Accordingly,themost favourable areas for oil and gas prospecting in red beds in western Qai-dam Basin must be paleolacustrine area,and the west and south sides of thearea.As for the east and north parts,it is better to pay attention to the areaswhere secondary pores are well developed and/or discontinued sandstone bedsare existed.

原生、次生、继承性三类气-液包体中,以原生包体提供的信息最有意义。测压表明红层油藏正处于成岩期形成的高压异常体内,表明油源为红层同时沉积的湖相生油岩。储层孔隙得以保存的原因是孔隙流体的异常高压,阻碍了石英的压溶,以及不渗透层阻断了硅质来源,使石英长石不能加大。测温表明,当古地温78℃时,即有油气生成,比以往推算的生油门限值低26℃,故西部实际生油量远大于目前算得的数值。异常高压的形成与小型三角洲相河道砂岩体及夹于湖相泥岩中的洪积相砂、砾岩体有关。因此,盆地西部红层油气藏的勘探应以古湖区及其西、南两侧为重点。

 
<< 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石英-长石的内容
在知识搜索中查有关石英-长石的内容
在数字搜索中查有关石英-长石的内容
在概念知识元中查有关石英-长石的内容
在学术趋势中查有关石英-长石的内容
 
 

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