980-970 Ma Sette-Daban event of the Siberian craton : new geochronological and geochemical data, relationship to LIP and potential connection with other LIPs
(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.
(Less)
- author
- organization
- publishing date
- 2024
- 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}}, }