Advanced

Relationship between platinum-bearing ultramafic-mafic intrusions and large igneous provinces (exemplified by the Siberian Craton)

Mekhonoshin, A. S.; Ernst, R.; Soderlund, U. LU ; Hamilton, Michael A.; Kolotilina, T. B.; Izokh, A. E.; Polyakov, G. V. and Tolstykh, N. D. (2016) In Russian Geology and Geophysics 57(5). p.822-833
Abstract

This study aims at summarizing available geological and geochemical data on known Proterozoic platinum-bearing ultramafic-mafic massifs in the south of Siberia. Considering new data on geochemistry and geochronology of some intrusions, it was feasible to compare ore-bearing complexes of different time spans and areas and to follow their relationships with the recognized large igneous provinces. In the south of Siberia, the platinum-bearing massifs might be united into three age groups: Late Paleoproterozoic (e.g., Chiney complex, Malozadoisky massif), Late Mesoproterozoic (e.g., Srednecheremshansky massif), and Neoproterozoic (e.g., Kingash complex, Yoko-Dovyren massif, and massifs in the center of the East Sayan Mts.). In most massifs... (More)

This study aims at summarizing available geological and geochemical data on known Proterozoic platinum-bearing ultramafic-mafic massifs in the south of Siberia. Considering new data on geochemistry and geochronology of some intrusions, it was feasible to compare ore-bearing complexes of different time spans and areas and to follow their relationships with the recognized large igneous provinces. In the south of Siberia, the platinum-bearing massifs might be united into three age groups: Late Paleoproterozoic (e.g., Chiney complex, Malozadoisky massif), Late Mesoproterozoic (e.g., Srednecheremshansky massif), and Neoproterozoic (e.g., Kingash complex, Yoko-Dovyren massif, and massifs in the center of the East Sayan Mts.). In most massifs but Chiney the initial magmas are magnesium-rich. On paleogeodynamic reconstructions, the position of the studied massifs is the evidence that three most precisely dated events in North Canada continued into southern Siberia: In the period 1880-1865 Ma, it was the Ghost-Mara River-Morel LIP; at 1270-1260 Ma, the Mackenzie LIP; and at 725-720 Ma, Franklin LIP. In Siberia, the mostly productive massifs with respect to PGE-Ni-Cu mineralization are those linked with the Franklin LIP: Verkhny Kingash, Yoko-Dovyren, and central part of the Eastern Sayan Mountains, e.g., Tartay, Zhelos, and Tokty-Oy.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Large igneous provinces, Mafic-ultramafic intrusions, PGE-Ni-Cu deposits
in
Russian Geology and Geophysics
volume
57
issue
5
pages
12 pages
publisher
Elsevier
external identifiers
  • scopus:84969776630
  • wos:000377370700014
ISSN
1068-7971
DOI
10.1016/j.rgg.2015.09.020
language
English
LU publication?
yes
id
5f023752-e265-479b-90e0-caf7309ad8cb
date added to LUP
2017-02-03 08:57:27
date last changed
2017-09-18 11:35:49
@article{5f023752-e265-479b-90e0-caf7309ad8cb,
  abstract     = {<p>This study aims at summarizing available geological and geochemical data on known Proterozoic platinum-bearing ultramafic-mafic massifs in the south of Siberia. Considering new data on geochemistry and geochronology of some intrusions, it was feasible to compare ore-bearing complexes of different time spans and areas and to follow their relationships with the recognized large igneous provinces. In the south of Siberia, the platinum-bearing massifs might be united into three age groups: Late Paleoproterozoic (e.g., Chiney complex, Malozadoisky massif), Late Mesoproterozoic (e.g., Srednecheremshansky massif), and Neoproterozoic (e.g., Kingash complex, Yoko-Dovyren massif, and massifs in the center of the East Sayan Mts.). In most massifs but Chiney the initial magmas are magnesium-rich. On paleogeodynamic reconstructions, the position of the studied massifs is the evidence that three most precisely dated events in North Canada continued into southern Siberia: In the period 1880-1865 Ma, it was the Ghost-Mara River-Morel LIP; at 1270-1260 Ma, the Mackenzie LIP; and at 725-720 Ma, Franklin LIP. In Siberia, the mostly productive massifs with respect to PGE-Ni-Cu mineralization are those linked with the Franklin LIP: Verkhny Kingash, Yoko-Dovyren, and central part of the Eastern Sayan Mountains, e.g., Tartay, Zhelos, and Tokty-Oy.</p>},
  author       = {Mekhonoshin, A. S. and Ernst, R. and Soderlund, U. and Hamilton, Michael A. and Kolotilina, T. B. and Izokh, A. E. and Polyakov, G. V. and Tolstykh, N. D.},
  issn         = {1068-7971},
  keyword      = {Large igneous provinces,Mafic-ultramafic intrusions,PGE-Ni-Cu deposits},
  language     = {eng},
  month        = {05},
  number       = {5},
  pages        = {822--833},
  publisher    = {Elsevier},
  series       = {Russian Geology and Geophysics},
  title        = {Relationship between platinum-bearing ultramafic-mafic intrusions and large igneous provinces (exemplified by the Siberian Craton)},
  url          = {http://dx.doi.org/10.1016/j.rgg.2015.09.020},
  volume       = {57},
  year         = {2016},
}