| 书目名称 | Siberian Traps andPt-Cu-Ni Deposits in the Noril’sk Area | | 编辑 | Nadezhda A. Krivolutskaya | | 视频video | | | 概述 | Provides new geochemical data (250 LA-ICP-MS, XRF analyses) on volcanic and intrusive rocks from the Noril’sk area.Contains a huge collection of analytical data on rock-forming minerals, including mai | | 图书封面 |  | | 描述 | .This book addresses fundamental problems in the evolution of magmatic and ore-forming processes in the Noril’sk area of northern Central Siberia. Based on data on the geology and geochemistry of rocks, obtained by the author in the course of fieldworks and new analytical studies (applying XRF, ICP-MS, microprobe analysis, ion-probe analysis and studying melt and fluid inclusions in olivine, as well as stable and radiogenic isotopes in the rocks), it was proposed a new scheme for the evolution of magmatism, including two episodes: rift and trap .per se.. The ultramafic-mafic massifs are classified into three geochemical types, the most important of which (the ore-bearing Noril’sk type) was formed in post-Nadezhdinsky time as an independent pulse of magmatic activity. The primary melts for ore-bearing intrusions had tholeiitic composition with elevated MgO (8 wt%) and low volatile contents (data form melt inclusions in olivine and pyroxenes, in combination with numerical simulations using the COMAGMAT program package). The assimilation of host rocks by the parental melts was studied in the contact zones of the Maslovsky and Talnakh intrusions. It was shown that it had taken place o | | 出版日期 | Book 2016 | | 关键词 | Anhydrite; Melt Inclusions; Noril’sk Deposits; Rare Earth Elements; Sulfur Isotopes; Volcanic Traps | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-319-17205-7 | | isbn_ebook | 978-3-319-17205-7 | | copyright | Springer International Publishing Switzerland 2016 |
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发表于 2025-3-21 19:58:29
