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Upper Jurassic–Lower Cretaceous Deposits of the Eastern Part of the Oloy Zone: Stratigraphy, Geochemistry, Age, and Geodynamic Setting

Starikova, E. V. ; Gagieva, A. M. ; Konovalov, A. L. ; Vatrushkina, E. V. ; Akinin, V. V.

Russian journal of Pacific geology, 2023-08, Vol.17 (4), p.297-321 [Periódico revisado por pares]

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Título:
Upper Jurassic–Lower Cretaceous Deposits of the Eastern Part of the Oloy Zone: Stratigraphy, Geochemistry, Age, and Geodynamic Setting
Autor: Starikova, E. V. ; Gagieva, A. M. ; Konovalov, A. L. ; Vatrushkina, E. V. ; Akinin, V. V.
Assuntos: Cretaceous ; Earth and Environmental Science ; Earth Sciences ; Geochemistry ; Geology ; Island arcs ; Isotopes ; Jurassic ; Lithology ; Radiometric dating ; Rivers ; Sedimentary facies ; Stratigraphy ; Volcanic rocks ; Zircon
É parte de: Russian journal of Pacific geology, 2023-08, Vol.17 (4), p.297-321
Descrição: This paper reports new data on the geology and stratigraphy of the Upper Jurassic–Lower Cretaceous deposits of the eastern part of the Oloy zone (upper reaches of the Oloy, Ilguveem, Aluchin rivers), including the description of sections, lithological-petrographic and paleontological characteristics of volcaniclastic sediments, the results of petrological-geochemical study of volcanic rocks, and their isotope dating. Two concordant dates were obtained using the zircon U–Pb method: 147 ± 2 Ma (Elom Formation) and 140 ± 2 Ma (Glukhovskaya Formation). The island-arc nature of the studied formations has been substantiated. The facies conditions and geodynamic settings of all stages of the formation of the volcanic-sedimentary complex in the various structural-facies zones have been characterized.
Editor: Moscow: Pleiades Publishing
Idioma: Inglês

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