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mn-deposit
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  锰矿床
     Three aspects of ancient geography, ancient structure and ancient climate allied to control the form and space distribution of Mn-deposit.
     沉积相受古地理、古构造、古气候控制,它们三位一体联合控制了锰矿床的形成和空间展布。
短句来源
     The Longtou Mn-deposit, being of sedimentary type with manganese carbonate as its main ore mineral, is controlled by lagoonal facies and related to submarine hills.
     龙头锰矿床是一个受泻湖相控制、与海底潜丘有关的沉积碳酸锰矿床.
短句来源
     The ore now mined from the Mugui Mn-deposit in Guiping,Guangxi is occurred mainly in ashenstructure.
     广西木圭锰矿床的烟灰状锰矿石,是该矿区开采的主要矿石类型。
短句来源
     The characteristics of rare earth elements of the Xialei Mn-deposit are similar to those of the volcanism associated Ningming bentonite deposit to its southe ast direction.
     下雷锰矿床和位于它东南方向、与火山活动有关的宁明膨润土矿床矿石中的稀土元素特征相似。
短句来源
     On the Origin of the Heqing Mn-deposit, Western Yunnan
     滇西鹤庆锰矿床成因探讨
短句来源
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  锰矿
     Taking theDawashan Mn-deposit as an example, the author expounds his views on the geological features andore-forming mechanism of the deposits in this paper.
     笔者以四川大瓦山锰矿为例,阐述了藻菌成因的锰矿床的地质特征及其成矿机理.
短句来源
     The effectiveness of this method was confirmed by evaluation of anomalies overa known Mn-deposit.
     通过对某地区氧化锰矿与非矿的评价,说明方法是有效的并有良好的应用前景。
短句来源
     This paper reported the first discovery of bementite in China by studying the mineral composition and technological mineralogy on Heqin Mn-deposit in Yunnan,China.
     对云南省鹤庆锰矿的物质组成及工艺矿物学研究中首次发现,也是国内第一次发现的锰矿物—蜡硅锰矿[Mn_5Si_4O_(10)(OH)_6],进行了大量研究工作。
短句来源
     Relationship between system region of forepart high water-level and sediment Mn-deposit is indicated.
     指4出沉积锰矿与早期高水位体系域、煤矿与陆架边缘体系域相关联。
短句来源
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Measured and proved reserves of manganese ores in China rank third in the world. Most of the reserves are carbonate ores and of low grade. High grade ores and oxidized ores only occupy a small proportion of the total reserves. Her annual output of Mn ore is not enough to meet the need of the metallurgical industrial development. In present paper the author puts forward his proposal for strengthening Mn ore exploration in following respects: 1) To devote major efforts to high grade ore hunting and pay particular...

Measured and proved reserves of manganese ores in China rank third in the world. Most of the reserves are carbonate ores and of low grade. High grade ores and oxidized ores only occupy a small proportion of the total reserves. Her annual output of Mn ore is not enough to meet the need of the metallurgical industrial development. In present paper the author puts forward his proposal for strengthening Mn ore exploration in following respects: 1) To devote major efforts to high grade ore hunting and pay particular attention to secondary oxidized and primary sedimentary Mn-rich deposits,and hydrothermal transformed type Mn-bearing vein deposits; 2)To make unremitting efforts to search for secondary oxidized ores hosted in silt-mud formation,eruptive-sedimentary formation,cross fractures or box fold and those in palaeo-weathering deposit prior to early Cenozoic in north part of China; 3) Pay attention to new Mnbearing horizon (particularly in Proterozoic, Cretaceous and Tertiary strata; 4) To find concealled Mn deposits by methods of petrographic and structural analysis; 5) To strengthen the reconnaissance survey of Mn deposit in north China hereafter.

我国已探明的锰矿资源储量已居世界第三位。但贫矿多,富矿少;碳酸锰矿石多,氧化锰矿石少;年产量满足不了冶金工业发展的需要。作者从五个方面提出了对今后加强锰矿的找矿工作的认识。一、大力寻找富矿。找小而富的矿,积少成多。注意次生氧化富矿(如古风化壳矿床、断裂交叉处和古岩溶中的矿床、厚大次生氧化矿体的核心或底部);原生沉积富矿;热液改造的脉状矿床。二、坚持找氧化矿。找粉砂—泥质建造和喷发—沉积建造中的氧化锰矿、断裂交叉和箱状隆起轴部的次生氧化矿体和北方新生代以前的古风化矿床。三、注意新的含矿层位。如元古代、白垩纪和第三纪地层中的锰矿层。四、运用岩相和古构遗分析方法,找隐伏矿。五、加强我国北方的找矿工作,克服锰矿分布的不平衡,指出了北方找锰的方向。

The Huya type Fe—Mn ore deposits, an important type manganese deposit in Sichuan Province ,are mainly distributed in Songpan—Heishui region and occurred in the upper Bocigou Formation of Lower Triassic Series. The sedimentary facies in the late period of early Triassic Epoch may be divided into: external shelf microfacies, internal shelf microfacies, offshore bar microfacies,submarine bar microfacies and shallow seashelf transitional zone microfacies. The palaeogeographical framework are recognized as: Kang—Dian...

The Huya type Fe—Mn ore deposits, an important type manganese deposit in Sichuan Province ,are mainly distributed in Songpan—Heishui region and occurred in the upper Bocigou Formation of Lower Triassic Series. The sedimentary facies in the late period of early Triassic Epoch may be divided into: external shelf microfacies, internal shelf microfacies, offshore bar microfacies,submarine bar microfacies and shallow seashelf transitional zone microfacies. The palaeogeographical framework are recognized as: Kang—Dian (Xikang Yunnan)palaeocontinet in south Sichuan,a NE—SW trending paloeo—island chain in Longmenshan area,and a palaeocontinent upheaved in Motianling area in Palaeozoic era. In the sea basin in Songpan—Heishui region,two submarine swells,(Jone—Jiaochang and Jone-Weigu)are occurred. The Huya shallow sea trough lies to the east of the Jone—Jiaochang swell,in the middle of these two submarine swells is the wabuliangzi submarine depression and to the west of the Jone—Weigu submarine swell is the Heishui semi—enclosed basin. The formation of the Huya type Fe—Mn deposits were strictly controlled by petrographical and palaeogeographical conditions.

四川省虎牙式铁锰矿床主要分布于松潘—黑水一带,赋存于下三叠统菠茨沟组上段地层中。虎牙式铁锰矿床是四川省重要的锰矿类型之一。早三叠世晚期的沉积相可划分为:外陆棚微相、内陆棚微相、远滨砂坝微相、水下砂坝微相和浅海陆棚过渡带微相。古地理格局:四川省南部是康滇古陆,龙门山地区存在一条北东—南西向分布的古岛链,摩天岭一带为古生代隆起的古陆。在黑水—松潘一带的海盆中,有卓尼—较场、卓尼—维古两个水下隆起。在卓尼—较场东侧为虎牙浅海槽;两个水下隆起之间是瓦布梁子水下洼地;卓尼—维古西侧是黑水半局限盆地。虎牙式铁锰矿床的形成严格受岩相—古地理条件的制约。

The Heqin Mn deposit, a high-grade manganese ore recently discovered in Yunnan Provinc, is occurred in the Songgui Formation of the upper Triassic and formed in the Noric epoch. Its sedimentary structure is a lagoon deposit of an island are on the side of the continent. Orematerials were derived from the Hercynian basalt and Mn-bearing limestone or other lean ore rocks in the Beiya Formation of the middle Triassic Ore bodies chiefly consist of oxidized ores (pyrolusite, manganite or psilomelane) and carbonate...

The Heqin Mn deposit, a high-grade manganese ore recently discovered in Yunnan Provinc, is occurred in the Songgui Formation of the upper Triassic and formed in the Noric epoch. Its sedimentary structure is a lagoon deposit of an island are on the side of the continent. Orematerials were derived from the Hercynian basalt and Mn-bearing limestone or other lean ore rocks in the Beiya Formation of the middle Triassic Ore bodies chiefly consist of oxidized ores (pyrolusite, manganite or psilomelane) and carbonate ores (rhodochrosite, manganocalcite) with distinct zoning for these two kinds of ores. The deposit experienced two metallogenie stages: sedimentary and diagenetic. At the sedimentary stage, manganese only began to concentrate. The commercial Mn deposit discovered was formed mainly through an evolutionary process in a submarine diagenetic environment. The presence of manganese nodules in the ore——bearing horizon is an important evidence for the mentioned diagenetic change. Based upon the analyses of sedimentary facies and diagenetic environment. a tentative mineralization model for the Heqin Mn deposit is suggested.

鹤庆锰矿是云南新发现的一个优质锰矿床,产于上三叠统松桂组层位中。锰的成矿期为诺利克期,矿床的沉积—构造背景是岛弧向陆一翻的泻湖沉积。锰质来源于海西期玄武岩和中三叠统北衙组中的含锰灰岩或贫矿石。矿体主要由氧化物矿石(软锰矿、水锰矿或硬锰矿)和碳酸盐矿石(菱锰矿、锰方解石)组成,两者具有明显的分带。矿床经历了沉积和成岩两个主要阶段。沉积阶段锰的集中只是初步的,形成工业锰矿床的关键是海底成岩环境中锰的演化过程。锰结核在矿层中的出现就是这种成岩变化的重要标志。根据沉积相和成岩环境分析,本文给出了一个初步的成矿模式。

 
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