检索结果-南通市图书馆

Age and petrogenesis of the newly discovered Early Permian granite in the kumtor gold field， Kyrgyz Tien-Shan

Journal of Earth Science 2024年

作者： Kyiazbek Asilbekov Rustam Orozbaev Etienne Skrzypek Christoph Hauzenberger Elena Ivleva Daniela Gallhofer Jian-Feng Gao Nikolay Pak Anatoliy Shevkunov Anatoliy Bashkirov Aizat Zhaanbaeva Institute of Geology， National Academy of Sciences of the Kyrgyz Republic Institute of Earth Sciences， University of Graz State Key Laboratory of Ore Deposit Geochemistry， Institute of Geochemistry， Chinese Academy of Sciences kumtor gold company cjsc

Permian intrusions are widespread in the Middle and Southern Tien Shan， with fewer occurrences in the Northern Tien-Shan. Notably， many of these intrusions are spatially associated with a variety of ore deposits， indicating a significant link between magmatic activity and mineralization processes in these areas. We studied granite samples recently recovered from drilling in the kumtor gold field to evaluate their potential relationships with gold mineralization. We report major and trace element geochemistry， zircon U-Pb age and Hf isotope data for this so-called kumtor granite. The kumtor granite is metaluminous to peraluminous and belongs to the high-K and calc-alkaline series with I-type geochemical characteristics. The relatively high K2O and Na2O concentrations and low high field strength elements （HFSE） and heavy rare earth elements （HREE）， the presence of biotite within these I-type granites， together with their low zircon saturation temperatures （731–779 °C）， suggest that they were likely derived from a hydrous source formed by dehydration melting of mica-bearing， medium- to high-K metabasaltic rocks. Our zircon U-Pb dating results indicate that the kumtor granite intruded at 293 ± 1.7 Ma， which is consistent with the age range of other Middle Tien-Shan granitoids. The zircon Hf isotopic composition is εHf（t）= –7.56 to –5.05， indicating an ancient （1.39 to 1.52 Ga） crustal origin. Petrographical， geochemical and geochronological data indicate that the kumtor granite is similar to leuco-granites of the Terekty complex. Our results indicate that the kumtor granite was emplaced in the early Permian in a post-collision setting and may have temporal and genetic relationships with gold mineralization.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：