The early crust of the Volgo-Uralian segment of the East European Craton: Isotope-geochronological zirconology of metasedimentary rocks of the Bolshecheremshanskaya Formation and their Sm-Nd model ages
(2015) In Stratigraphy and Geological Correlation 23(1). p.1-23- Abstract
- We present the results of isotope-geochronological study of metasedimentary rocks of the Bolshecheremshanskaya Formation of the Volgo-Uralian segment of the East European Craton carried out to identify their protoliths. 16 samples of high-alumina gneisses from well cores were studied using the Sm-Nd isotope method and T-Nd(DM) model ages. Accessory zircons were selected from rocks with the most ancient model ages (more 3.2 Ga) in three wells: Minnibaevskaya 20000, Novo-Elkhovskaya 20009, and Zai-Karatayskaya 12930 in South Tatarstan. The isotope U-Pb dating of 200 zircon grains was performed on a Cameca 1280 NORDSIM secondary ion mass spectrometer at the Natural History Museum (Stockholm, Sweden). The most applicable sites for analysis of... (More)
- We present the results of isotope-geochronological study of metasedimentary rocks of the Bolshecheremshanskaya Formation of the Volgo-Uralian segment of the East European Craton carried out to identify their protoliths. 16 samples of high-alumina gneisses from well cores were studied using the Sm-Nd isotope method and T-Nd(DM) model ages. Accessory zircons were selected from rocks with the most ancient model ages (more 3.2 Ga) in three wells: Minnibaevskaya 20000, Novo-Elkhovskaya 20009, and Zai-Karatayskaya 12930 in South Tatarstan. The isotope U-Pb dating of 200 zircon grains was performed on a Cameca 1280 NORDSIM secondary ion mass spectrometer at the Natural History Museum (Stockholm, Sweden). The most applicable sites for analysis of zircon crystals were pre-selected based on cathodoluminescence images. The analytical results demonstrate the diversity of zircon groups in age from 3.8 to 2.6 Ga and together with geochemical features of metasedimentary rocks of the Bolshecheremshanskaya Formation suggest the heterogeneous composition and age of provenance areas under denudation. Occurrence of Eoarchean and Paleoarchean zircons in the clastic material of the protolith of the Bolshecheremshanskaya gneisses indicates the existence of Early Archean crustal terrains in Volgo-Uralia. (Less)
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https://lup.lub.lu.se/record/5194663
- author
- Bibikova, E. V. ; Bogdanova, Svetlana LU ; Postnikov, A. V. ; Fedotova, A. A. ; Claesson, S. ; Kirnozova, T. I. ; Fugzan, M. M. and Popova, L. P.
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Volgo-Uralia, metasedimentary rocks, model age, clastic zircon, U-Pb, isotope dating, ion microprobe
- in
- Stratigraphy and Geological Correlation
- volume
- 23
- issue
- 1
- pages
- 1 - 23
- publisher
- Interperiodica
- external identifiers
-
- wos:000349028700001
- scopus:84961290633
- ISSN
- 0869-5938
- DOI
- 10.1134/S0869593815010037
- language
- English
- LU publication?
- yes
- id
- 34763dcd-d614-4e9f-89be-e628b3ff52d8 (old id 5194663)
- date added to LUP
- 2016-04-01 13:53:06
- date last changed
- 2022-01-27 21:38:15
@article{34763dcd-d614-4e9f-89be-e628b3ff52d8,
abstract = {{We present the results of isotope-geochronological study of metasedimentary rocks of the Bolshecheremshanskaya Formation of the Volgo-Uralian segment of the East European Craton carried out to identify their protoliths. 16 samples of high-alumina gneisses from well cores were studied using the Sm-Nd isotope method and T-Nd(DM) model ages. Accessory zircons were selected from rocks with the most ancient model ages (more 3.2 Ga) in three wells: Minnibaevskaya 20000, Novo-Elkhovskaya 20009, and Zai-Karatayskaya 12930 in South Tatarstan. The isotope U-Pb dating of 200 zircon grains was performed on a Cameca 1280 NORDSIM secondary ion mass spectrometer at the Natural History Museum (Stockholm, Sweden). The most applicable sites for analysis of zircon crystals were pre-selected based on cathodoluminescence images. The analytical results demonstrate the diversity of zircon groups in age from 3.8 to 2.6 Ga and together with geochemical features of metasedimentary rocks of the Bolshecheremshanskaya Formation suggest the heterogeneous composition and age of provenance areas under denudation. Occurrence of Eoarchean and Paleoarchean zircons in the clastic material of the protolith of the Bolshecheremshanskaya gneisses indicates the existence of Early Archean crustal terrains in Volgo-Uralia.}},
author = {{Bibikova, E. V. and Bogdanova, Svetlana and Postnikov, A. V. and Fedotova, A. A. and Claesson, S. and Kirnozova, T. I. and Fugzan, M. M. and Popova, L. P.}},
issn = {{0869-5938}},
keywords = {{Volgo-Uralia; metasedimentary rocks; model age; clastic zircon; U-Pb; isotope dating; ion microprobe}},
language = {{eng}},
number = {{1}},
pages = {{1--23}},
publisher = {{Interperiodica}},
series = {{Stratigraphy and Geological Correlation}},
title = {{The early crust of the Volgo-Uralian segment of the East European Craton: Isotope-geochronological zirconology of metasedimentary rocks of the Bolshecheremshanskaya Formation and their Sm-Nd model ages}},
url = {{http://dx.doi.org/10.1134/S0869593815010037}},
doi = {{10.1134/S0869593815010037}},
volume = {{23}},
year = {{2015}},
}