E. V. Vatrushkina, M. V. Gertseva, V. V. Kostyleva, S. D. Sokolov
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引用次数: 0
Abstract
New data on the composition and structure of the Jurassic section in the Central zone of the Polousnyi Terrane are presented. The arkosic composition of sandstones and the predominance of granites in the sediment provenance was established by petrographic data. Both redeposited fragments of volcanic rocks of various composition and synchronous pyroclastic material were identified in the sandstones. U–Pb isotope dating of detrital zircons and the obtained maximum depositional age made it possible to revise the stratigraphic volume of the Jurassic sediments exposed in the Central Zone and to limit it from the Upper Bajocian to the Tithonian. The immaturity of the composition and the absence of reliably dated Hettangian–Aalenian sediments indicate a new cycle of sedimentation and contradict the existence of a single Verkhoyansk passive margin in the Triassic–Jurassic.
期刊介绍：
Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.
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