U–Pb Age of Detrital Zircons from the Middle Permian Sabantuy Chromite Paleoplacer (Southern Pre-Urals)

The first U–Pb isotope data of detrital zircon from chromite sandstones of the Middle Permian Sabantuy paleoplacer, Southern Pre-Urals, has been obtained. The distribution of U–Pb dates is unimodal with a peak at 420–400 Ma. Two-thirds of all ages are Devonian, and more than half of them correspond...

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Published inDoklady earth sciences Vol. 517; no. 1; pp. 1075 - 1081
Main Authors Rakhimov, I. R., Pushkarev, E. V., Chervyakovskiy, V. S., Dyakova, S. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2024
Springer Nature B.V
Subjects
Chromite
Devonian
Earth and Environmental Science
Earth Sciences
Geology
Lead
Magma
Ophiolites
Permian
Radiometric dating
Sandstone
Subduction
Subduction (geology)
Zircon
Southern Pre-Urals
provenance
chromite paleoplacer
U–Pb age
detrital zircon
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Summary:The first U–Pb isotope data of detrital zircon from chromite sandstones of the Middle Permian Sabantuy paleoplacer, Southern Pre-Urals, has been obtained. The distribution of U–Pb dates is unimodal with a peak at 420–400 Ma. Two-thirds of all ages are Devonian, and more than half of them correspond to the Early Devonian, during which supra-subduction ophiolitic and accompanying high-pressure metamorphic complexes were formed in the Southern Urals and ultramafic-mafic magmatism occurred. These spatially combined geological bodies, exposed in the melange zone of the Main Uralian Fault or tectonically moved to the west as ophiolite allochthons, are the main sources of detrital chromite and zircon in the Sabantuy paleoplacer.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X24601664