兰坪盆地水泄铜(钴)矿床石英的40Ar-39Ar快中子活化年龄

来源 :地质科学 | 被引量 : 0次 | 上传用户:wqvbqjxtid1
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
选取水泄铜(钴)矿床主成矿阶段的石英样品进行40Ar39Ar快中子活化法同位素地质年龄测定,获得坪年龄59.2±0.8Ma,对应的等时年龄为59.8±0.5Ma,反等时线年龄为59.9±0.1Ma,三者在误差范围内完全一致,都可代表矿石的形成年龄。该年龄与兰坪盆地铜多金属矿集区的矿床形成时代一致,反映包括水泄铜(钴)矿床在内的区域矿床形成于喜马拉雅造山运动早期统一的构造地质背景之下,受同一期构造—热演化事件的制约。 The 40Ar39Ar fast neutron activation isotope geochronometry was used to select the quartz samples from the main ore-forming stage of the water-draining copper (cobalt) deposit. The average age was 59.2 ± 0.8Ma and the corresponding isochron age was 59.8 ± 0.5Ma. The age of 59.9 ± 0.1Ma, three within the error range exactly the same, can represent the age of formation of ore. This age coincides with that of the copper polymetallic deposits in the Lanping Basin, indicating that the regional deposits, including the water-draining copper (cobalt) deposit, were formed under the unified structural and geological background of the early Himalayan orogeny. Due to the same phase structure - Thermal Evolution Constraints.
其他文献
终极所有权结构如何影响公司的债务期限结构是公司治理研究中的一个重要问题。以2003年~2005年只发行A股的824家非金融上市公司的平衡面板数据为样本,通过随机效应模型实证检
To improve the hydrophilieity and anti-fouling performance in water treatment,beth entrapped method and deposited method were used to modify polyvinylidene fluo
在分析和总结了大量水文地质资料的基础上,详细地分析了淮北煤田陷落柱的分布规律,并以刘桥一矿为例讨论了陷落柱导水性的判别方法.认为陷落柱的产状、"通天性"和控制断层是
Objective To analyze the prevalence of asthma and asthma related symptoms among children aged 0-14 years in three Chinese cities and to obtain a crude estimatio
以往关于政府R&D支出行为的研究往往忽视了政府行为的空间依赖性对R&D空间分布的影响。采用空间计量方法对我国政府R&D投入的空间外部性及其驱动因素进行了经验研究。结果表
随着现代信息与通信技术(ICT)的快速发展,人类活动--移动模式正在经历着深刻的变革,这些变革可能会给人们的日常生活以及人类的空间组织带来重大影响.时间地理学提供了一个非
以林南仓矿水文地质条件为基础,利用突水系数法、阻水系数法,对14煤底板的阻、隔水性能进行评价,另外,还对14煤开采的矿井涌水量进行了预测.认为在采取了一定的安全措施后,14
In this paper,the characteristics of the water quality in Yellow River estuary reservoirs were surveyed and the progress of the eutrophication was investigated
The Tengchong geothermal area, an active tectonic region with frequent earthquakes, is located in Yunnan Province of southwestern China. This area contains abun
桑秀组玄武岩仅仅分布在特提斯喜马拉雅带中段东部,古地理属大印度北缘。分别采用XRF、ICP-MS和全岩同位素稀释法对这些玄武岩的主元素、微量元素和Sr-Nd同位素进行了系统分