...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Doklady earth sciences >Metasomatic Mineral Composition at the Sukhoi Log Gold Deposit: Evidence for Its Genetic Relation with Mafic-Ultramafic Magmatism
【24h】

Metasomatic Mineral Composition at the Sukhoi Log Gold Deposit: Evidence for Its Genetic Relation with Mafic-Ultramafic Magmatism

机译：Metasomatic Mineral Composition at the Sukhoi Log Gold Deposit: Evidence for Its Genetic Relation with Mafic-Ultramafic Magmatism

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Metasomatic alterations of rocks and compositional features of newly formed minerals at the stratiform Sukhoi Log gold deposit (Patom Highland) provide new insights into conditions of the hydrothermal process, in particular, the contribution of mafic-ultramafic magmas to metasomatism and ore formation. The Sukhoi Log deposit is located in the Riphean Bodaibo Au-bearing turbidite terrane south of the passive continental margin of the North Asian Craton. The terrane incorporates gold-quartz vein and gold-sulfide-quartz vein-disseminated deposits. The deep structure of the Bodaibo Au-bearing district was scrutinized in 2. The host turbidite sequence of the Sukhoi Log, the largest gold deposit in the district, has a thickness of 7-8 km. The sequence is underlain by the Early Riphean ophiolite complex (about 10 km thick), which consists of predominant metabasalts and metaterrigenous rocks with horizons of ferruginous quartzites intruded by ultramafic bodies. The ultramafic bodies are recorded by local positive gravity anomalies. Granite massifs younger than the host turbidites occur both at the present-day erosion level and at depth. The Sukhoi Log gold deposit is believed to be correlated with the deep-seated Ugakhan granite pluton reflected by the Ugakhan Δg minimum. The estimated depths of the roof and bottom of the pluton are 3.2 and 8-8.5 km, respectively. The deposit is shifted to the margin of pluton projection on the surface. In the Vendian-Cambrian, epicratonic sequences were subjected to fold-nappe and shear deformations and regional metamorphism.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号