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980-970 Ma Sette-Daban event of the Siberian craton : new geochronological and geochemical data, relationship to LIP and potential connection with other LIPs

Savelev, Aleksandr D. ; Khudoley, A. K. ; Malyshev, S. V. ; Chamberlain, K. R. ; Ernst, R. E. ; Pazukhina, A. A. ; Prokopiev, A. V. ; Söderlund, U. LU ; Lebedeva, O. Yu and Bilali, H. El , et al. (2024) In International Geology Review
Abstract

The paper presents new geological, geochronological, geochemical and Nd-Sr isotopic data on the Meso- Neoproterozoic dolerites of the Siberian Craton. New U-Pb baddeleyite and apatite ages of a E-W-trending dyke and two sills from southeastern Siberia are 982 ± 11, 977 ± 7, 970 ± 31 and 972 ± 60 Ma, respectively, extending the area of distribution of the event by more than 100 km to the north. The Sette-Daban intrusions are subalkalic mostly low-Ti dolerites, although high-Ti dolerites have been locally documented as well. Trace element abundances in dolerites vary from typical to E-MORB to OIB with arc-like signatures represented by high Th/Yb and low TiO2/Yb ratios. All dolerite samples display moderately positive εNd(t)... (More)

The paper presents new geological, geochronological, geochemical and Nd-Sr isotopic data on the Meso- Neoproterozoic dolerites of the Siberian Craton. New U-Pb baddeleyite and apatite ages of a E-W-trending dyke and two sills from southeastern Siberia are 982 ± 11, 977 ± 7, 970 ± 31 and 972 ± 60 Ma, respectively, extending the area of distribution of the event by more than 100 km to the north. The Sette-Daban intrusions are subalkalic mostly low-Ti dolerites, although high-Ti dolerites have been locally documented as well. Trace element abundances in dolerites vary from typical to E-MORB to OIB with arc-like signatures represented by high Th/Yb and low TiO2/Yb ratios. All dolerite samples display moderately positive εNd(t) values varying from +3.3 to +7.7 and indicating the magmas were derived from a depleted mantle source. E-MORB and OIB intrusions are attributed to the different degree of interaction of magma between the depleted asthenospheric mantle and regions within the sub-continental lithospheric mantle (SCLM) that were metasomatically enriched during earlier subduction events. Available data on Sette-Daban event distribution, composition and duration satisfy the characteristics of a typical Large Igneous Province (LIP). Similar age 1000–950 Ma mafic magmatism is also recognized in the Baltic and Amazonian cratons and can be potentially correlated with the Sette-Daban event.

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type
Contribution to journal
publication status
epub
subject
keywords
geochemistry, large igneous province, meso-neoproterozoic, Sette-daban event, Siberian craton, U-Pb geochronology
in
International Geology Review
publisher
Taylor & Francis
external identifiers
  • scopus:85192839472
ISSN
0020-6814
DOI
10.1080/00206814.2024.2349899
language
English
LU publication?
yes
id
b11f7ff6-ac17-43d5-b3b6-0e71da71e439
date added to LUP
2024-05-27 15:03:40
date last changed
2024-05-27 15:04:35
@article{b11f7ff6-ac17-43d5-b3b6-0e71da71e439,
  abstract     = {{<p>The paper presents new geological, geochronological, geochemical and Nd-Sr isotopic data on the Meso- Neoproterozoic dolerites of the Siberian Craton. New U-Pb baddeleyite and apatite ages of a E-W-trending dyke and two sills from southeastern Siberia are 982 ± 11, 977 ± 7, 970 ± 31 and 972 ± 60 Ma, respectively, extending the area of distribution of the event by more than 100 km to the north. The Sette-Daban intrusions are subalkalic mostly low-Ti dolerites, although high-Ti dolerites have been locally documented as well. Trace element abundances in dolerites vary from typical to E-MORB to OIB with arc-like signatures represented by high Th/Yb and low TiO<sub>2</sub>/Yb ratios. All dolerite samples display moderately positive εNd(t) values varying from +3.3 to +7.7 and indicating the magmas were derived from a depleted mantle source. E-MORB and OIB intrusions are attributed to the different degree of interaction of magma between the depleted asthenospheric mantle and regions within the sub-continental lithospheric mantle (SCLM) that were metasomatically enriched during earlier subduction events. Available data on Sette-Daban event distribution, composition and duration satisfy the characteristics of a typical Large Igneous Province (LIP). Similar age 1000–950 Ma mafic magmatism is also recognized in the Baltic and Amazonian cratons and can be potentially correlated with the Sette-Daban event.</p>}},
  author       = {{Savelev, Aleksandr D. and Khudoley, A. K. and Malyshev, S. V. and Chamberlain, K. R. and Ernst, R. E. and Pazukhina, A. A. and Prokopiev, A. V. and Söderlund, U. and Lebedeva, O. Yu and Bilali, H. El and Moskalenko, A. N.}},
  issn         = {{0020-6814}},
  keywords     = {{geochemistry; large igneous province; meso-neoproterozoic; Sette-daban event; Siberian craton; U-Pb geochronology}},
  language     = {{eng}},
  publisher    = {{Taylor & Francis}},
  series       = {{International Geology Review}},
  title        = {{980-970 Ma Sette-Daban event of the Siberian craton : new geochronological and geochemical data, relationship to LIP and potential connection with other LIPs}},
  url          = {{http://dx.doi.org/10.1080/00206814.2024.2349899}},
  doi          = {{10.1080/00206814.2024.2349899}},
  year         = {{2024}},
}