捷克Novoveská Huta地区层状和脉状铀、钼、铜矿床的成因研究

来源 :地质科学译丛 | 被引量 : 0次 | 上传用户:hxhbj2009
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Novoveská Huta附近的二叠系岩层中,铀、钼和铜矿化呈层状和脉状产出。矿石矿物主要有品质铀矿、铀-钛氧化物、硅铀矿、辉钼矿、黄铜矿、砷黝铜矿和黄铁矿。在层状矿体的矿石中硫和碳的同位素出现了较大的变动(δ~(34)S从-32.7‰到+2.7‰,δ~(13)C从-27.1‰到-0.5‰)。这些数据说明了大气降水、火山成因流体和复杂来源的流体的混合。含铜矿化的石英-碳酸盐脉中δ~(34)S(从-18.8‰到-4.6‰)和δ~(13)C(从-6.3‰到-2.5‰)的较窄变化区间,说明含矿流体的深源性。二叠系火山岩是一种重要的矿源岩,火山岩中铀、钼、铜和钇的含量比沉积岩中高出2到8倍。根据U-Pb同位素测定年代,地层中成矿元素的富集是在240±30Ma以前,通过还原作用和吸附作用而形成。由于阿尔卑斯期构造运动,这些低品位的矿石(U<0.1_(w_B)%)被活化迁移。而较高品位的铀-钼矿石(U>0.1_(w_B)%)形成于130±20Ma以前,测定流体包裹体的形成温度为110~120℃。据Pb模式年龄确定铜矿化的年轻矿脉形成于115±10Ma,其形成温度为96~190℃。 In the Permian strata near Novoveská Huta, uranium, molybdenum and copper mineralization are layered and veined. Ore minerals are mainly quality uranium, uranium - titanium oxide, silicon uranium, molybdenite, chalcopyrite, arsenic tetrahedrite and pyrite. The isotopic compositions of sulfur and carbon in the ore of stratiform ore body show a large change (δ ~ (34) S from -32.7 ‰ to +2.7 ‰ and δ ~ (13) C from -27.1 ‰ to -0.5 ‰) . These data illustrate the mixing of atmospheric precipitation, volcanic fluids and fluids of complex origin. Narrow variation of δ ~ (34) S (from -18.8 ‰ to -4.6 ‰) and δ ~ (13) C (from -6.3 ‰ to -2.5 ‰) in copper-bearing quartz- , Indicating the deep source of ore-bearing fluid. Permian volcanic rocks are an important source rock. The contents of uranium, molybdenum, copper and yttrium in volcanic rocks are two to eight times higher than those in sedimentary rocks. According to the dating of U-Pb isotopes, the enrichment of metallogenic elements in the strata is formed by reduction and adsorption before 240 ± 30Ma. Due to the Alpine tectonic movement, these low-grade ores (U <0.1_ (w_B)%) are activated and migrate. The higher grade uranium-molybdenum ore (U> 0.1_ (w_B)%) was formed before 130 ± 20Ma. The formation temperature of fluid inclusions was measured at 110 ~ 120 ℃. According to the age of Pb model, the young mineralization of copper mineralization was formed at 115 ± 10Ma, and the formation temperature was 96-190 ℃.
其他文献
A highly configurable fast Fourier transform intellectual property core (FFT IP core) that can be mounted on Avalon bus of Nios II processor is designed in this
期刊
期刊
期刊
期刊
Microscopic techniques were employed to investigate element enrichment characteristics in the vicinity of the interfacial transition zone (ITZ) of MgO concrete.
期刊
期刊
In this paper, an approximate analytical algorithm in the form of direct Fourier reconstruction is obtained for the reconstruction of data functions arisen from п-scheme short-scan single-photon emiss
期刊
目的:研究余甘子叶和蒲葵子的抗癌有效成分及其配伍的最佳剂量组合。  方法:1.在体外实验,采用MTT法、测定化合物A、化合物B、化合物C、化合物D对人肝癌细胞株Bele7404、人胃
We develop a new video-based motion analysis algorithm to determine whether two persons have any interaction in their meeting. The interaction between two persons can be very general, such as shaking
期刊
本文介绍了一种用来控制移动机器人组成链式网络并修复通讯连接的自适应分布式机器人合作算法。开发了单层链式伸展算法和双层链式伸展算法,使得移动机器人可以对开放式环境