Advanced

Proterozoic mafic magmatism in Siberian craton: An overview and implications for paleocontinental reconstruction

Gladkochub, Dmitry P.; Pisarevsky, Sergei A.; Donskaya, Tatiana V.; Ernst, Richard E.; Wingate, Michael T. D.; Söderlund, Ulf LU ; Mazukabzov, Anatoliy M.; Sklyarov, Eugene V.; Hamilton, Michael A. and Hanes, John A. (2010) In Precambrian Research 183(3). p.660-668
Abstract
We present a summary of late Paleoproterozoic to Neoproterozoic mafic magmatism in the Siberian craton, including recently published U-Pb and Ar-40-Ar-39 dates. These new precise ages suggest that at least some of the previously published K-Ar ages of Siberian mafic bodies should be ignored. The time-space geochronological chart, or the 'barcode' of mafic magmatic events shows significant differences between northern and southern Siberia. Both are characterized by similar to 1900-1700 Ma magmatic events, but then there was an almost 1 Ga mafic magmatic 'pause' in south Siberia until similar to 800 Ma. Meanwhile there are indications of multiple mafic magmatic events in North Siberia (Anabar shield and Olenek uplift) between similar to 1600... (More)
We present a summary of late Paleoproterozoic to Neoproterozoic mafic magmatism in the Siberian craton, including recently published U-Pb and Ar-40-Ar-39 dates. These new precise ages suggest that at least some of the previously published K-Ar ages of Siberian mafic bodies should be ignored. The time-space geochronological chart, or the 'barcode' of mafic magmatic events shows significant differences between northern and southern Siberia. Both are characterized by similar to 1900-1700 Ma magmatic events, but then there was an almost 1 Ga mafic magmatic 'pause' in south Siberia until similar to 800 Ma. Meanwhile there are indications of multiple mafic magmatic events in North Siberia (Anabar shield and Olenek uplift) between similar to 1600 and 1000 Ma. A series of magmatic events probably related to the breakup of Rodinia occurred in southern Siberia after similar to 800 Ma. So far, there are no indications of late Neoproterozoic mafic magmatism in North Siberia. Ca. 1000-950 Ma mafic sills were reported from Meso- to Neo-Proterozoic sedimentary successions in the Sette-Daban area on the east side of the Siberian craton, but their tectonic setting is debated. Recent Ar-Ar dates of similar to 1750 Ma for NW-trending dykes in the Aldan and Anabar shields, together with similar-age NNE-trending Baikal uplift dykes in south-eastern Siberia suggest the existence of a giant radial dyke swarm possibly related to a mantle plume centred in the Vilyui River area. (C) 2010 Elsevier B.V. All rights reserved. (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
Geochronology, Dykes, Mafic magmatism, Proterozoic, Siberian craton
in
Precambrian Research
volume
183
issue
3
pages
660 - 668
publisher
Elsevier
external identifiers
  • wos:000285233200019
  • scopus:77958131671
ISSN
0301-9268
DOI
10.1016/j.precamres.2010.02.023
language
English
LU publication?
yes
id
b6fe73cc-c6f0-40d7-a0e2-4d8be9598f8c (old id 1772411)
date added to LUP
2011-02-02 21:03:06
date last changed
2018-06-24 03:14:24
@article{b6fe73cc-c6f0-40d7-a0e2-4d8be9598f8c,
  abstract     = {We present a summary of late Paleoproterozoic to Neoproterozoic mafic magmatism in the Siberian craton, including recently published U-Pb and Ar-40-Ar-39 dates. These new precise ages suggest that at least some of the previously published K-Ar ages of Siberian mafic bodies should be ignored. The time-space geochronological chart, or the 'barcode' of mafic magmatic events shows significant differences between northern and southern Siberia. Both are characterized by similar to 1900-1700 Ma magmatic events, but then there was an almost 1 Ga mafic magmatic 'pause' in south Siberia until similar to 800 Ma. Meanwhile there are indications of multiple mafic magmatic events in North Siberia (Anabar shield and Olenek uplift) between similar to 1600 and 1000 Ma. A series of magmatic events probably related to the breakup of Rodinia occurred in southern Siberia after similar to 800 Ma. So far, there are no indications of late Neoproterozoic mafic magmatism in North Siberia. Ca. 1000-950 Ma mafic sills were reported from Meso- to Neo-Proterozoic sedimentary successions in the Sette-Daban area on the east side of the Siberian craton, but their tectonic setting is debated. Recent Ar-Ar dates of similar to 1750 Ma for NW-trending dykes in the Aldan and Anabar shields, together with similar-age NNE-trending Baikal uplift dykes in south-eastern Siberia suggest the existence of a giant radial dyke swarm possibly related to a mantle plume centred in the Vilyui River area. (C) 2010 Elsevier B.V. All rights reserved.},
  author       = {Gladkochub, Dmitry P. and Pisarevsky, Sergei A. and Donskaya, Tatiana V. and Ernst, Richard E. and Wingate, Michael T. D. and Söderlund, Ulf and Mazukabzov, Anatoliy M. and Sklyarov, Eugene V. and Hamilton, Michael A. and Hanes, John A.},
  issn         = {0301-9268},
  keyword      = {Geochronology,Dykes,Mafic magmatism,Proterozoic,Siberian craton},
  language     = {eng},
  number       = {3},
  pages        = {660--668},
  publisher    = {Elsevier},
  series       = {Precambrian Research},
  title        = {Proterozoic mafic magmatism in Siberian craton: An overview and implications for paleocontinental reconstruction},
  url          = {http://dx.doi.org/10.1016/j.precamres.2010.02.023},
  volume       = {183},
  year         = {2010},
}