【摘 要】
：
1.ObjectiveThe Sepon Au-Cu deposit (Fig.1) is the largest polymetal deposit ever discovered in Laos, of which the resources of gold and copper is 102 t (Au: 1.6
【机 构】
：
Chinese Academy of Geological Sciences, Beijing 100037, China“,”Ministry of Natural Resources Key La
论文部分内容阅读
1.ObjectiveThe Sepon Au-Cu deposit (Fig.1) is the largest polymetal deposit ever discovered in Laos, of which the resources of gold and copper is 102 t (Au: 1.6 g/t) and 1.96×106 t (TCu:2％) (Zhu HP et al., 2013) respectively.Sepon Au-Cu deposit is one of the most important super large deposits of the Truong Son Fold Belt.The Truong Son Fold Belt, located at the northeaste margin of the Indo-China terrane, is considered to be tectonically linked to the subduction of the Paleotethys Ocean and subsequent collision.The granodiorite porphyry samples from the Sepon deposit belong to Ⅰ-type calc-alkaline series and tectonic settings are continental arc environment (Cromie PW, 2010).LA-ICP MS zircon U-Pb dating results show that granodiorite porphyry samples from the Sepon deposit have ages of 302.1 ± 2.9 Ma.The in situ zircon εHf(t) values range from +4.32 to +9.64, and TDM2(Hf) has an average age of 914 Ma (Wang XY et al., 2018).In this study, the authors present new in situ zircon oxygen isotopic data to identify the source of the magma.
其他文献
党的十八届四中全会明确提出“推进覆盖城乡居民的公共服务体系建设,加强民生领域法律服务”,普遍建立法律顾问制度是贯彻落实全会精神的重要举措.在村(社区)普遍建立法律顾
在与其他两大犯罪论体系比较过程中可以看到,我国四要件犯罪构成体系与其他两大犯罪论体系的差别不仅在于体系构造以及构成要件之间的逻辑性,还包括责任理论基础的不同.责任
一、案例简介rn2017级A班,女生B寝室,含成员4人.其中,寝室成员W同学性格内向,不合群,与寝室其他成员X同学、Y同学、Z同学在生活习惯、作息等方面时常发生一些小摩擦,关系一直
Considering the geological hazards attributed to the highway slope,using a common simple model cannot accurately assess the stability of the slope.First,princip
随着自主创业成为了越来越多在校大学生的新选择,学生们在创业中会遇到诸多阻碍和风险,如融资风险、市场风险、法律风险等,在法律风险中,合同法律风险尤为突出,成为影响大学
土地旨在支持乡村治理建设、为基层社会成员提供一定的生产生活资料,这是我国战略发展和制度实践的重要内容.乡村土地制度的发展与乡村稳定大局、经济的持续健康发展、社会的
正是基于老年人住房反抵押保险项目在全国范围展开的大背景下,笔者认为有必要对住房反向抵押合同中的让与担保进行法律层面的探讨,分析其法律性质及其在实践运用中存在的法律
在突发事件中,政府信息公开不仅有利于保障公众知情权,维护公共财产安全,同时也有可以监督政府权力行使,维护政府的权威性和公信力.我国在《政府信息公开条例》和《突发事件
A suite of ultramafic and mafic rocks developed in the Chigu Tso area,easte Tethyan Himalaya.Baddeleyite and zircon U-Pb ages acquired by SIMS and LA-ICP-MS fro
伴随杭州大湾区城市群发展战略的提出,区域立法已成为推进杭州大湾区协调发展亟待解决的重大理论和实践难题.绍兴地区作为杭州大湾区建设的重要战场,绍兴下设区,区市之间的地