40Ar/39Ar Age of Phengite from Sandstone of the Ophiolite-Derived Clastic Sequence of the Basin of the Rassokha River, Collision Belt of the Chersky Range

The Early Permian (275.3 ± 3.1 Ma) 40 Ar/ 39 Ar plateau age of detrital mica (Cr-phengite) from clasts in listvenite sandstones of the ophiolite-derived clastic sequence of the Rassokha Terrane of the Chersky Range probably corresponds (or is close) to the time of the formation of listvenites of the...

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Bibliographic Details
Published in:Doklady earth sciences 2024-03, Vol.515 (1), p.441-448
Main Authors: Ledneva, G. V., Travin, A. V., Sychev, S. N., Bazylev, B. A., Rogov, A. V., Sokolov, S. D.
Format: Article
Language:English
Subjects:
Age
Argon
Earth and Environmental Science
Earth Sciences
Geology
Massifs
Mica
Ophiolites
Permian
Radiometric dating
Rocks
Sandstone
Sedimentary rocks
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Summary:The Early Permian (275.3 ± 3.1 Ma) 40 Ar/ 39 Ar plateau age of detrital mica (Cr-phengite) from clasts in listvenite sandstones of the ophiolite-derived clastic sequence of the Rassokha Terrane of the Chersky Range probably corresponds (or is close) to the time of the formation of listvenites of the provenance (ophiolitic massifs of the range) and restricts the maximum deposition age of clastic rocks. A partial loss of Ar by mica as a result of deformations and postsedimentation transformation of rocks of the ophiolite-derived clastic sequence in the Early Permian is possible but it is less probable.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X23603383