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Siberian Traps and Pt-Cu-Ni Deposits in the Noril'sk Area

By: Nadezhda A Krivolutskaya(Author)

364 pages, 143 colour & 29 b/w illustrations


Hardback | Oct 2015 | #237708 | ISBN-13: 9783319172040
Availability: Usually dispatched within 1 week Details
NHBS Price: £149.99 $191/€167 approx

About this book

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 only in narrow zones (about 1-2 m) and did not played sufficient role in ore formation. It was suggested that the source of the material was lower crustal rocks in long-lived rift zones, where sulfides accumulated in several stages.

Siberian Traps and Pt-Cu-Ni Deposits in the Noril'sk Area offers a valuable resource for specialists in the geology of ore deposits and petrology, as well as for advanced Geology students.


- Formulation of the problem and its urgency
- Overview of the geology of the Norilsk area and problems concerning the genesis of its ores
- Study history of the Norilsk mineral deposits
- Geological overview of the territory
- Specifics of the tuff-lava sequence: geological and geochemical evidence
- History of and principal problems in studying volcanic rocks in the Norilsk area
- Data obtained on volcanic rocks in the Norilsk area
- Rocks of the tuff-lava sequence
- Intrusive rocks
- Problems in distinguishing intrusive complexes in the Norilsk area and distinctive features of their inner structure and composition
- Geochemical types of the intrusive rocks
- Comparison of the geochemistry of ore-bearing complexes in Russia
- Relations between the lavas and mineralized massifs
- Geological relations between lavas and intrusive rocks in the Norilsk Complex
- Comparison of the geochemistry of the lavas and intrusions in the Norilsk Complex
- Composition of the parental melts of the intrusions
- Composition of the melts: evidence from melt inclusions
- Fluids in the genesis of the intrusions
- Composition of the melts: geochemical thermometry with the Comagmat - 3.5 program package
- Chemistry and mineralogy of ores in deposits at the Norilsk group of deposits
- Relations between the valuable components of the ores
- Mineralogy of the ores
- Sulfur isotopic composition
- Interpretations of the results: possible magma sources and ore-forming processes

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