The Oligocene Reference Section in the South of the East European Platform (Northern Ergeni)

Zastrozhnov, Andrey; Попов, С. В.; Beniamovsky, V. N.; Musatov, V. A.; Akhmetiev, M. A.; Zaporozhets, N. I.; Bogachkin, A. B.; Stolyarov, А. S.

doi:10.1134/s0869593819040063

Cited by 7 publications

(1 citation statement)

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“…Other stratigraphic divisions of the Maikop Group were proposed during later studies of the Paleogene succession in the North Caucasus. However, these schemes were based on the study of Maikopian successions located at some distance to the west or north of Dagestan (Zhizhchenkо, 1953Grossgeim, 1960;Popov et al, 2019;Zastrozhnov et al, 2019). These stratigraphic schemes are not reviewed here because their correlation with the fossilpoor succession in Dagestan is still somewhat tenuous.…”

Section: Introductionmentioning

confidence: 99%

Stratigraphy, Sedimentology and Geochemistry of the Oligocene – Lower Miocene Maikop Group in Dagestan, Ne Caucasus

Gavrilov

Nedumov

Shchepetova

et al. 2021

Journal of Petroleum Geology

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Samples of Maikop Group sediments from the Sulak section were analysed for their contents of Mo, S, Fe, Mn, V, Ni and other elements. A stagnation coefficient (Mo/Mn x 100) was calculated and was interpreted as a measure of the intensity of anoxia in the Maikop palaeobasin. Anoxic conditions are interpreted to have reached a maximum in the Rupelian and Aquitanian during deposition of the Khadum and Riki Formations respectively. However, geochemical conditions were unstable and the oxygen concentration in the bottom waters varied widely over time. Thus, the Zuramakent Formation at the top of the Maikop Group was largely deposited in normally oxygenated conditions.

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Section: Introductionmentioning

confidence: 99%