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大规模成矿作用     
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  large-scale metallogeny
     Preliminary discussion on possible genesis of crustal rotation,its impact on geotectonic evolution and its relation to large-scale metallogeny in Hunan province and adjacent regions
     湖南及邻区地壳旋转的可能成因、对大地构造演化的影响及其与大规模成矿作用关系初探
短句来源
     This paper makes a preliminary discussion on the possible genesis of such rotation movement,as well as the associated series of geologic processes and its relation to large-scale metallogeny in Hunan province and adjacent regions.
     本文对这种旋转运动的可能成因,以及所伴随的一系列地质作用、与大规模成矿作用的关系等进行了初步探讨。
短句来源
  large scale mineralization
     MESOZOIC LARGE SCALE MINERALIZATION AND MULTIPLE LITHOSPHERIC EXTENSION IN SOUTH CHINA
     华南地区中生代大规模成矿作用与岩石圈多阶段伸展
短句来源
     Mesozoic intermediate-acid intrusive rocks are closely related with large scale mineralization in the Tongling metallogenic cluster area.
     铜陵矿集区中生代中酸性侵入岩和大规模成矿作用有密切关系.
短句来源
  extensive mineralization
     The regional tectonic evolution and extensive mineralization in orogenic belts are different expressions of the same continental dynamic process.
     造山带区域构造演化与大规模成矿作用是同一大陆动力学过程的不同表现。
短句来源
     In the early Middle Jurassic-Late Jurassic post-orogenic stage (III),voluminous post-orogenic granite was emplaced (at 174-135 Ma),accompanied by extensive mineralization.
     中侏罗世早期—晚侏罗世后造山阶段(Ⅲ),大量后造山花岗岩侵位(174~135Ma),同时发生大规模成矿作用;
短句来源
  “大规模成矿作用”译为未确定词的双语例句
     and big scale mineralization occurred in 195Ma~140Ma.
     大规模成矿作用年龄分布在195Ma~140Ma;
短句来源
     The Yanshanian Granitoids and Their Cosmical Mineralization Interaction in Poly Metallogenic Deposit-Concentrated, Area in Southeastern Hunan
     湘东南多金属矿集区燕山期花岗岩类及其大规模成矿作用
短句来源
     (2) The mainland China geologically evolved > 3.0 Ga, but its large scale mineralizations exploded at Yanshanian in east area, Cenozoic in Tethysian domain of Southwestern China, and late Hercynian in Central Asia domain of Northwestern China respectively;
     (2 )中国陆区经历了 >3.0Ga的演化 ,为什么大规模成矿作用在东部地区爆发于燕山期 ,西南特提斯成矿域爆发于新生代 ,而西北中亚成矿域爆发于海西期晚期 ?
短句来源
     Large-scale metallogenesis and petroleum field formation in continental China——constraints from the lithosphere
     中国大陆大规模成矿作用油气田形成——来自岩石圈的约束
短句来源
     Based on metallogenic chronology, the authors hold that there existed two pulses of large_scale mineralization (180 Ma and 140 Ma) in the Yanshan_Liaoning metallogenic belt, whose metallogenic geodynamic settings were the post_collisional orogeny of Northern China block and Siberian block and the late variation stage of the tectonic regime in eastern China, respectively.
     成矿年代学研究表明,燕辽钼(铜)成矿带大规模成矿作用发生于180Ma左右和140Ma左右2个时期,其对应的成矿动力学背景分别为华北板块与西伯利亚板块后碰撞造山阶段和中国东部构造体制大转折晚期。
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  large-scale metallogeny
They constitute the main part of the magmatic-metallogenic belt of southern Hunan, and represent the large-scale metallogeny in middle Yanshanian in the area.
      
This caused the uneven spatial distribution of Mesozoic large-scale metallogeny in East China.
      
  其他


Data on geology and geochemistry isotope and inclusion from the granite of Yaogang xian tungsten ore deposit were synthesized. It is recognized that the diagenetic process of the granite has four stages in the mining area. There are seven mineralization activities ,. in which two are larger in scale . Here the evolution of granites , physico-chemical conditions of diagenetic梞inerogenetic processes are discussed. The diagenetico- mi-nerogenetic pattern was established . Four types of mineralization geneses are...

Data on geology and geochemistry isotope and inclusion from the granite of Yaogang xian tungsten ore deposit were synthesized. It is recognized that the diagenetic process of the granite has four stages in the mining area. There are seven mineralization activities ,. in which two are larger in scale . Here the evolution of granites , physico-chemical conditions of diagenetic梞inerogenetic processes are discussed. The diagenetico- mi-nerogenetic pattern was established . Four types of mineralization geneses are classified.

文章综合了瑶岗仙钨矿床花岗岩地质地球化学、同位素和包裹体等方面资料,认为本矿区花岗岩有4阶段,矿床有7次矿化活动,其中有两次大规模成矿作用;并讨论了花岗岩的演化,成岩成矿的物化条件,建立了花岗岩成矿模式,划分矿化成因类型为4大类。

Why did large_scale metallogenesis of metallogenic explosion span a very short period in the course of geological history within some metallogenic provinces? Why did a lot of mineral deposits occur in several small areas as metallogenic clusters in the metallogenic provinces during the period of metallogenic explosion? Where are the metallogenic clusters distrubuted in the provinces? And how can the metallogenic clusters be easily found? Focused on these important problems, this paper systematically deals with...

Why did large_scale metallogenesis of metallogenic explosion span a very short period in the course of geological history within some metallogenic provinces? Why did a lot of mineral deposits occur in several small areas as metallogenic clusters in the metallogenic provinces during the period of metallogenic explosion? Where are the metallogenic clusters distrubuted in the provinces? And how can the metallogenic clusters be easily found? Focused on these important problems, this paper systematically deals with the basic phenomena, characteristics, and some regularities of large_scale metallogenesis or metallogenic explosion. Large_scale metallogenesis usually happened in special tectonic environments with huge amounts of metallogenic substances as supplements, sustained energy systems, excellent channels for transportation and favorable space for accumulation of metallogenic substances. Large metallogenic clusters could be studied through anatomizing the major deposits, establishing their relationship and tracing their genesis based on the investigation of tectonic environment. After detailed geological, geochemical and geophysical studies, we can understand the mineralization proscesses, set up the metallogenic models and some prospecting indicators. The models and indicators can be used to do prospecting in similar areas within the same or different metallogenic provinces.

本文系统地阐述了大规模或大爆发成矿作用现象、特点和出现的某些规律。阐述大规模成矿作用发生必须具有特殊的构造环境, 巨量的成矿物质供给, 持续的能量系统, 优越的输运通道和适宜的堆积空间。大规模成矿作用在空间上表现为非均一性, 在成矿区带中绝大多数矿床基本上仅出现于几个空间比较小的大型矿集区内。本文提出研究大型矿集区必须着眼于大尺度( 成矿大环境) , 切入中尺度( 大型矿集区) , 地质、地球化学和地球物理多学科交叉, 理清成矿过程, 建立成矿模型, 进而有效地提取找矿信息, 提高找矿效率

The medium_low temperature metallogenic province in South China is composed of the “Jiangnan_type” gold and antimony belt in Jiangnan old land, the Hunan_Guizhou mercury belt, the Southwest Carlin_type gold zone,and the Central Hunan antimony zone. It holds nearly 80% Sb ore reserves of the world and the same proportion of Hg in China. In the last twenty years, a series of important fine impregnation gold deposits, similar to the Carlin_type ones in the United States, have been discovered in the western belt...

The medium_low temperature metallogenic province in South China is composed of the “Jiangnan_type” gold and antimony belt in Jiangnan old land, the Hunan_Guizhou mercury belt, the Southwest Carlin_type gold zone,and the Central Hunan antimony zone. It holds nearly 80% Sb ore reserves of the world and the same proportion of Hg in China. In the last twenty years, a series of important fine impregnation gold deposits, similar to the Carlin_type ones in the United States, have been discovered in the western belt of the province. Its metallogenic epoch is isotopically dated at 180×10 6 a to 80×10 6 a, mostly falling into Yanshanian and tending to become younger from the early Yanshanian in the southeastern to the middle and late Yanshanian in the northwestern. Similarity in composition and overlapping in space between the association of ore_forming elements in the Proterozoic basement and the economically important metallic paragenesis in the deposits indicates their inheritance relationship. According to the data from nearly thirty important Au, Sb Hg, As and Pb_Zn deposits in this belt, there is an obvious decreasing and in_ crerasing tendency respectively in temperature and salinity of the ore_forming fluids from the east to the west. Salinity of inclusion fluids has a large variation range, from 0.3 to higher than 25 NaCl eq. wt%, in the low temperature Au, Sb and Hg deposits in the western and northern basins around the Jiangnan old land, showing evidence for a strong brine mixing process during the formation of the ore deposits. The present paper suggests that there was a close relationship in origin between the medium_low temperature metallogenic province and the world_class tungsten (tin) province in the southeast during the Yanshanian event though the former hardly had any regional magmatic activity while the latter was always associated with granite. These two provinces make up a huge metallogenic super_province with a continent_scale mineralization zoning composed of pneumatolytic_hypothermal_mesothermal_epithermal_low temperature deposits from the sou_ thestern to northwestern, together with oil_gas and coal fields in southeastern Sichuan. This shows that in Yanshanian the “Pan_South China region” (Southeast China, Central South China and Southwest China) experienced large_scale fluid migration and mineralization under the action of the unified thermal field.

华南中、低温成矿带主要由江南古陆的“江南型”金_锑矿带、湘黔汞矿带、西南卡林型金矿区和湘中锑矿带组成。其成矿时代有自东向西从燕山早期到中、晚期有变新的趋势; 矿种分布和成矿元素组合表现出对元古宇基底的继承性; 成矿流体的温度和盐度在大区域内从东到西和自南向北分别呈现降低和增高的趋势, 并且在古陆西、北侧的盆地中有盆地卤水混合的现象。研究表明, 华南中、低温成矿带的时空分布和成矿元素组合演化与华南燕山期花岗岩强烈活动的华南钨( 锡) 成矿域有密切的联系。这些大型矿集区都集中形成于燕山期, 并与川东南油气田一起, 共同构成了一个自南东向北西的高—中—低温热液矿床和油气矿藏的区域性矿化巨型分带。从而表现出大华南地区( 东南、中南和西南) 在燕山期曾经历过统一热场作用下的大范围流体运动和大规模成矿作用

 
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