THE BASAL UNIT OF THE VERKHOYANSK SEDIMENTARY COMPLEX, NORTHERN KHARAULAKH: LITHOSTRATIGRAPHY, BIOSTRATIGRAPHY, AND DEPOSITION ENVIRONMENTS
N.V. Sennikov1,2, R.A. Khabibulina1, T.V. Gonta1,2, O.T. Obut1,2
1Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090. Russia
2Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090. Russia
Keywords: Carboniferous, Visean, stratigraphy, lithology, Northern Kharaulakh
Abstract
The origin and biostratigraphic constraints of the Krestyakh conglomerate remain among most controversial issues in the Late Paleozoic history of the North Kharaulakh basin. The Krestyakh conglomerate is a sequence of coarse sand to pebble-size sediments at the base of the Late Paleozoic Verkhoyansk clastic complex. According to geological, lithological, and sedimentation data, the Krestyakh conglomerate in the Atyrdakh Formation is composed of debrites: deposits carried by debris flows that fill submarine canyons. The Verkhoyansk clastic deposition began in the middle Visean stage of the Early Carboniferous.
DOI: 10.15372/RGG2020138
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