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magmatic belt
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  岩浆岩带
     12% of the total area of Tibetan territory and about 80% (in area) of them are distributed in the Gangdese magmatic belt.
     西藏花岗岩约占西藏自治区面积的12%,其中,80%分布在冈底斯岩浆岩带
短句来源
     The Yanshanian north Huaiyang magmatic belt resulted from large-scale intracontinental subduction of the Yangtze and Huaibei massifs.
     北淮阳燕山期岩浆岩带是扬子地块与华北地块大规模陆内俯冲的产物。
短句来源
     The extensive outcrops of Indosinian and Yanshanian granites and the mineralization anomalies near the fault belt indicate that the Indosinian structural magmatic movement is a dominant factor which affects the mineralizations of Cu, Pb, Zn and Ag in the Ba-yinggeligou area. The NS, EW complex structures controlled by the Wahongshan structural magmatic belt control the occurrences of ore bodies and lodes. The paper explains mineralizations of granites in the Ba-yinggeligou area by researching the geochemical feature.
     区内广泛出露的印支燕山期花岗岩以及在断裂带附近矿化异常的地质特征表明 :印支—燕山期构造岩浆活动是巴硬格莉沟地区Cu、Pb、Zn、Ag等多金属矿成矿的主导因素 ,在哇洪山—温泉构造岩浆岩带 ,NS向、EW向的复合构造控制了本区内矿体和矿脉的展布。
短句来源
     Linzizong volcanic rocks occurred in Gangdese magmatic belt in southern Tibet and regional unconformity between the volcanic strata and strata underlain provide new tectonomagmatic evidences for India-Asia continental collision.
     广泛发育在西藏冈底斯岩浆岩带中的林子宗火山岩及其与下伏地层间的区域性不整合 ,提供了印度—亚洲大陆碰撞 (在西藏南部 )的构造火成岩新证据。
短句来源
     The giant Gangdise compound magmatic belt in Xizang is known as another important metallogenic zone in China,in which copper,lead,zinc,gold and iron are hosted as dominant mineral species.
     规模巨大的西藏冈底斯复合岩浆岩带近几年已被公认是我国又一个重要成矿带,拥有铜、铅、锌、金和富铁等优势矿种。
短句来源
  岩浆带
     However,they paid very little to the strata bound process of the structure magmatic activity. The present paper deals with the structure magma control of the gold mineralization in this region in terms of the relationship between the structure magmatic activrty and the gold mineralization evolution,the relationship between the distribution of the structure magmatic belt and that of the gold deposits(prospeets),and the restraining effect of the structure magmatic anomaly strueture on the spatial location of the gold deposits (prospeets).
     该文从研究区构造—岩浆活动与金成矿演化 ,构造—岩浆带展布与金矿床 (点 )分布 ,构造—岩浆异常结构对金矿床 (点 )空间定位的制约等方面探讨了本区金成矿的构造—岩浆控制。
短句来源
     The Yanshanian magmatism in eastern China resulted probably from underplated basaltic magmas generated from upwelling asthenospheric mantle in a continental crust extensional setting, and had nothing to do with the westward subduction of the Paleo_Pacific (or Izanagi) plate. Therefore, the Yanshanian magmatic rocks in eastern China do not belong to the circum_Pacific tectonic_magmatic belt.
     认为中国东部燕山期大规模岩浆活动可能与地壳拉张环境下大规模拆沉作用导致的软流圈地幔上涌及其引发的玄武岩底侵作用有关 ,而与古太平洋板块的俯冲作用无关 ,中国东部不属于环太平洋构造 -岩浆带
短句来源
     The magmatic arc in the southeastern margin of the Qaidam massif is composed of the NWW striking Eastern Kunlun magmatic belt and Elashan magmatic belt.
     柴达木地块东南缘岩浆弧由东昆仑造山带北部近东西向岩浆带和发育于柴达木地块东部边缘的北北西向鄂拉山岩浆带构成 ,它们在侵位的时空结构、岩浆物化特征以及成因属性上均显示出一定的差异 ,并非属同一岩浆弧 (带 )。
短句来源
     It is helpful to study the characteristics of the volcanic activities in Sinian Period,the evolution of the Nanping Ninghua Tectonic Magmatic Belt and the palaeotectonic setting in the surveyed area
     为研究这一时期火山活动特点乃至南平—宁化构造 -岩浆带的演化及古构造环境提供了新的资料。
短句来源
  “magmatic belt”译为未确定词的双语例句
     (2) the transpressional oblique slip fracture magmatism type, which the Taihangshan fracture magmatic belt within North China plate may serve as its example.
     (2) 扭压斜滑断裂岩浆造山作用。
短句来源
     Based on an integrated analysis of the geological and geochemical characteristics of Yaokeng granites, and a systematic comparison of them with Kuiqi and Taohuadao granites, this paper concludes that the Yaokeng rock mass is also a typical postorogenic alkali granite occurring in late Mesozoic magmatic belt along the coastal area of Zhejiang and Fujian Provinces.
     根据对岩石地质地球化学特征的综合分析 ,并通过与区内魁歧、桃花岛岩体的广泛对比 ,确定瑶坑岩体为浙闽沿海晚中生代岩浆活动带内产出的又一典型的后造山碱性花岗岩。
短句来源
     Shiduo volcanic rocks in the western segment of Gangdise,Tibet belong to high potassium calc-alkali series and calc-alkali series. They are divided into two stages of volcanicism: Paleocene (59.7Ma) and Miocene (17.2Ma). In time and position, the former corresponds to Dianzhong Formation volcanic rocks of Linzizong Group in eastern Gangdise magmatic belt.
     西藏冈底斯西段狮多地区火山岩为一套高钾钙碱性和钙碱性系列岩石,分为古新世(59 7Ma)和中新世(17 2Ma)两个活动时期,早期的时代和层位大致相当于冈底斯东段的林子宗群典中组。
短句来源
     ()~(143)Nd/()~(144)Nd (0.512 275 to 0.512 420) and ε_(Nd)(t)(-6.7 to -4.0) in the Paleocene volcanic rocks are also smaller than those in the Dianzhong Formation volcanic rocks. These geochemical characteristics imply that volcanicism had some differences between western and eastern Gangdise magmatic belt in the same period.
     N(143Nd)/N(144Nd)的现在值(0 512275~0 512420)和初始值εNd(t)(-6 7~-4 0)也明显偏低,这反映冈底斯东、西段同一时期的火山活动及演化各具特色。
短句来源
     The Zaxoi beschtauite massifs occur in the central part of the Gangdise magmatic belt, and intruded into the pre-Ordovician Songduo Group Complex and Carboniferous-Permian Laigu Formation overlain unconformably by the Pana Formation volcanic rocks. The biotite in the beschtauite may be traced back to the Eocene, with a K-Ar age of (54.42 Ma).
     扎雪石英二长斑岩体分布于冈底斯岩浆弧带的中段,侵入于前奥陶系松多岩群和石炭—二叠系来姑组中,并被帕那组火山岩呈火山沉积不整合覆盖,其黑云母K Ar年龄值为54.42Ma,时代为始新世。
短句来源
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  magmatic belt
Apatite fission track (FT) ages from the sandstone matrix (age clusters at ~75 and ~30?Ma) are typical for the Austroalpine nappe pile and for the cooling ages of Periadriatic magmatic belt.
      
The majority of igneous clasts were eroded from the Oligocene Periadriatic magmatic belt.
      
We investigated the Sm-Nd systematics of mafic granulite and undeformed layered gabbro, which form a midcrustal section of the Jurassic magmatic belt in the North Chilean Coast Range, south of Antofagasta.
      
Penang Island represents the northwestern extension of the western magmatic belt of Peninsular Malaysia.
      
Intrusion-hosted, low sulfide, sheeted vein systems are common within many plutons and stocks of the middle Cretaceous Tombstone-Tungsten magmatic belt, Yukon Territory, and host significant gold mineralization.
      
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Fang Shan intrusion is a domed composite one lain inside north cbanese plate.The magma had been made during Mesozoic era, afterwards slowly diapiriclly uprised and pricked kernel position,finaly emplaced at mesogene-tic environment.All its mineral association,petrochemistry,trace elements and O, H, Sr isotope composition show characteristics of 'I-type' granites. And the partition of four coordinate Al, Fe,Mg and O,H isotopes between coexist minerals accomplished fundamentally equilibrium state.The FH2O of biotites...

Fang Shan intrusion is a domed composite one lain inside north cbanese plate.The magma had been made during Mesozoic era, afterwards slowly diapiriclly uprised and pricked kernel position,finaly emplaced at mesogene-tic environment.All its mineral association,petrochemistry,trace elements and O, H, Sr isotope composition show characteristics of 'I-type' granites. And the partition of four coordinate Al, Fe,Mg and O,H isotopes between coexist minerals accomplished fundamentally equilibrium state.The FH2O of biotites in earlier magma episode are lower than 2kb, however, those in later, surpass 2kb, simultaneously to consider textures of the rocks, it can be indicated that volatile component contents of the magma surpassed saturation during later stage of magma evolution and fractionated out some fluid phase. Moreover, it may be also indicated that source area of Fang Shan intrusion consist mainly of intermediated and basic metaigneous rocks of Archean group which were derived from the earth's mantle.The rock associations of tectonic-magmatic belt in Tai Hang mountain, from south to north, evolve from intermediate-basic to intermediate-acid one,reflect their source depth, deeper at south but shallower at north; reflect also sucha tectonic setting, that is, levels of rise for the upper mantle are higher at south but lower at north .

房山岩体是华北板块内部中生代活化的中酸性岩浆,经高角度底辟式均衡缓慢上侵并刺穿核部,最后定位于中深成环境下的穹窿状复式侵入体。它的矿物组合、岩石化学、微量元素及氧、氢、锶同位素组成均具Ⅰ型花岗岩特征。四次配位铝、铁镁、及氧和氢同位素在共生矿物之间的分配基本上达到了平衡。早期次岩石中黑云母的f_(H20)低于2kb,而晚期次的高于2kb,结合岩石结构,表明岩浆演化到晚期挥发份已达到过饱和并游离出一定的流体相。研究表明,房山岩体的物质来源主要是太古界基底的中基性变火成岩。太行山构造岩浆带,从南到北其岩石组合由偏基性到偏酸性的展布表明其源区深度南深扎浅,也反映了该区上地幔隆起程度南高北低的大地构造背景。

The characteristics of the grading control of diagenesis and metallogenesis by the fracture structures in the tin-ore belt of Yunlong is very obvious. On the basis of the detailed studies, the auther has divided the fractures into four orders in the ore belt. The formations and distributions of the ore belt and the magmatic belt, the orefield, the deposit and the ore bodies are controlled by these fractures separately, in which the 1st order of fractures is a regional structure which controls the diagenesis...

The characteristics of the grading control of diagenesis and metallogenesis by the fracture structures in the tin-ore belt of Yunlong is very obvious. On the basis of the detailed studies, the auther has divided the fractures into four orders in the ore belt. The formations and distributions of the ore belt and the magmatic belt, the orefield, the deposit and the ore bodies are controlled by these fractures separately, in which the 1st order of fractures is a regional structure which controls the diagenesis and metallogenesis; the 2nd order of fractures is a magma-transmitting and ore-transmitting structure; the 3rd order of fractures is an ore-distributing structure and the 4th order of fractures is an ore-holding structure. The paper also further discusses the conditions of structural control on the enrichment of mineralization, and the polyphase of metallogenesis is controlled by the polyphase of structural activity. There is undoubtedly a practical significance for the prog(?)oses in the ore belt on the basis of this knowledge.

在云龙锡矿带内,断裂构造分级控岩、控矿的特征是极为明显的。在详细研究的基础上,笔者将锡矿带内的断裂分为四级,分别控制了矿带和岩浆岩带、矿田、矿床和矿体的形成和分布。其中,一级断裂为区域性的控岩、控矿构造,二级断裂为导岩、导矿构造,三级断裂为配矿构造,四级断裂为容矿构造。文章还进一步讨论了矿化富集的构造控制条件,以及构造活动的多期性控制成矿的多期次。这些认识对矿带内的成矿预测无疑是有实际意义的。

Fujian Province is located in the southeastern coasts of China, on the continental margins of the Western Pacific, belonging to the South China fold system. In the province, there are a relatively full range of strata, frequent magmatic activity and rather complex geological structures, which create good conditions for the formation of abundant mineral resources. This paper briefly deals with the basic regional geological characteristics of Fujian Province by using the results of regional geological surveys...

Fujian Province is located in the southeastern coasts of China, on the continental margins of the Western Pacific, belonging to the South China fold system. In the province, there are a relatively full range of strata, frequent magmatic activity and rather complex geological structures, which create good conditions for the formation of abundant mineral resources. This paper briefly deals with the basic regional geological characteristics of Fujian Province by using the results of regional geological surveys and recent scientific achieve- ments on the basis of the monograph "Regional Geology of Fujian Province". Upper Proterozoic to Quaternary strata other than the Silurian, Middle and Lower Devonian and Lower Tertiary are all distributed in the province. Through a study of the stratigraphy and sedimentaion, it has been ascertained that in geological times the earth's crust of Fujian received the pre-Sinian-Ordovician geosynclinal-type, Late Devonian-Middle Triassic platform-type and Late Triassic-Cretaceous volcanic island-arc sediments. Volcanic rocks are widespread in Fujian. Those of ultrabasic, basic, interme- diate, acid and slightly alkaline compositions are all present. Through a study of volcanic rocks and volcanisms, it have been demonstrated that there were three major volcanisms in geological times in Fujian. The first occurred in late Proterozoic time, along deep fractures. This volcanism generated three NE- trending belts of volcanic eruption. The rocks are represented by basic-acid volcanic rocks and partly calc-alkaline ones, and exhibit bimodal features. The second took place in Carboniferous time. The rocks include basalt, andesite and rhyolite, which all belong to the alkaline volcanic series and exhibit bimodal features. The third occurred in the Jurassic-Cretaceous. The rocks are repre- sented by intermediate-acid volcanic rocks, forming a series of NE-trending belts of volcanic eruption. The rocks all belong to the calc-alkaline volcanic series and exhibit unimodal features. These indicate that the earth's crust in Fujian once underwent rifting in the late Proterozoic and Carboniferous and was strongly affected by plate motion in the Jurassic-Cretaceous. Studies of intrusive rocks and intrusion in Fujian show that there are Caledonian, Variscan-Indosinian, early Yanshanian, late Yanshanian and Hima- layan intrusive rocks. The rocks consist mainly of granites and subordinately of peridotites, gabbros and diorites. According to the mode of formation and material sources, metamorphic-metasomatic, anatectic, syntectic and differen- tiated granites may be distinguished. Their distribution exhibits a distinct feature of NE-trending zonal distribution and an eastward-younging trend. Metamorphic rocks are relatively widespread. Through a study of metamor- phic and metamorphism, it has been verified that there exist Caledonian, Indosinian and Yanshanian metamorphic rocks, distributed along deep fractures. They respectively form a Caledonian low-pressure, high-temperature metamorphic belt, an overlapped Caledonian and Indosinian medium-pressure, high-temper- ature metamorphic belt. Their formational ages become younger from the western part to the eastern coasts. Studies of the regional geological structures and the regularities of their evolution suggest that the development of the earth's crust in Fujian has gone through the Proterozoic-early Paleozoic, Late Devonian-Middle Triassic, Late Triassic-Cretaceous and Cenozoic periods. During the four periods of development, the Caledonian, Indosinian, Yanshanian and Himalayan tectonic beds were formed, and accordingly there occurred the Yangtzeian-Caledonian, Variscan- Indosinian, Yanshanian and Himalayan tectonic cycles, involving the stages of formation of the geosyncline, paraplatform and circum-Pacific continental-margin mobile belt. Finally a present-day continental framework was formed. The regular distribution of a series of dominantly NE-trending deep fracture belts, volcanic belts, magmatic belts and metamorphic belts leads to the formation of the regional tectonic framework of Fujian Province.

本文概略介绍了福建省的区域地质构造的基本特征,它在地质发展历史中的复杂历程。根据地层发育、沉积建造、古生物面貌、构造形态等,说明它经历过地槽、地台和火山岛弧三个发展阶段;区内火山岩十分发育,主要是北东向带状分布,在元古代、晚古生代和中生代发生过三次大的喷发活动;侵入岩具有多旋回、多期次和多种岩石及成因类型;区域变质岩分布受侵入岩和北东向深大断裂带的控制,经受了加里东、印支、燕山等三期变质作用的叠加与改造。

 
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