【摘 要】
：
超低温类型铅锌矿床是已知铅锌矿床的工业类型中最重要的一种。据别尔乌辛等在1942年的统计,它在铅锌的世界储量(苏联除外)中占39%。这种矿床在世界上的分布是很广的,例如铅
论文部分内容阅读
超低温类型铅锌矿床是已知铅锌矿床的工业类型中最重要的一种。据别尔乌辛等在1942年的统计,它在铅锌的世界储量(苏联除外)中占39%。这种矿床在世界上的分布是很广的,例如铅的产量占整个美洲铅产量40%的密士失必河一带的铅锌矿,特别是特赖斯蒂地区(三州地区)的铅锌矿;锌的产量占世界第二位的波兰西里亚铅锌矿;以盛产铅和锌的氧化物为特征的苏联土尔蘭阿奇赛矿床。这种矿床一向是
The ultra-low temperature type lead-zinc deposits are the most important of the industrial types of known lead-zinc deposits. According to Beurusin’s statistics in 1942, it accounted for 39% of the world’s reserves of lead and zinc (excluding the Soviet Union). This deposit is widely distributed around the world. For example, the lead-zinc mine in the vicinity of the Mischief, which accounts for 40% of the total lead production in the Americas, especially the lead in the Trieste region (three states) Zinc mine; zinc smelter is the second highest in the world in the Silesian lead-zinc mine; and the Soviet Tursun Achille deposit is characterized by the presence of oxides of lead and zinc. This deposit has always been
其他文献
一九四九年秋季,作者赴山西大同怀仁县附近调查煤田,曾由该县所属之鹅毛口至楼子口间经过,於该煤田东缘部之片麻岩中,见有许多基性包体,甚感有趣,兹记述之,诸希指正。
In t
Since about 1300 the Mansfield copper deposits have been the most produ-ctive copper-field in central Europe (Fig. 2). To give you a quantitative ideaabout ite
Ⅰ.INTRODUCTION In a recent paper published by H.Chu and the writer on the pre-Sinianvolcanic series and associated intrusive rocks,predominantly of acid natur
With 3 Plates. PREFACE From field experience and data accumulated in recent years several short papers on field geology have been written. The present paper em
In April, 1943, the writer had an opportunity to visit the districts of Kianghua and Lanshan in southwestern Hunan. The observed area is structurally an elonga
波西,并不MIA!阿朵詹姆斯·波西(James Posey)放弃“自由之身”,波西不当波西MIA人MIA(Missing In Action)意为战斗中失踪的人。在成功夺得总冠军之后,迈阿密的一干老将的去
中国电子科技集团公司第五十四研究所是我国从事通信测控技术研究最早、规模最大的多专业综合性重点研究所。五十四所以通信、测控技术为主要研究对象,具有很强的通信组网、
根据党的十七届三中全会精神和2009年《政府工作报告》关于“大力发展职业教育,特别要重点支持农村中等职业教育。逐步实行中等职业教育免费,今年先从农村家庭经济困难学
Ac
只是仅仅娱乐化赛车是不够的车迷也要娱乐化五一前夕,应朋友之邀到上海国际赛车场看了一场赛车。说是赛车倒更像是一场大PARTY。有歌舞、有明星、有漂移,肯定也少不了赛车。
The recent finding of plant-remains in the Hsiashan series adds an important chapter to the Carboniferous stratigraphy in the province of Kiangsi. This formati