Upper Cretaceous deposits in the northwest of Saratov region, Part 2: Problems of chronostratigraphy and regional geological history

Олферъев, А. Г.; Beniamovski, V. N.; Vishnevskaya, V. S.; Ivanov, A. V.; Kopaevich, L. F.; Ovechkina, Maria N.; Pervushov, E. M.; Seltser, V. B.; Tesakova, E. M.; Харитонов, В. М.; Shcherbinina, E. A.

doi:10.1134/s0869593808030040

Cited by 15 publications

(3 citation statements)

References 8 publications

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“…The formation has yielded a plethora of macro-invertebrates, including the belemnites Belemnellocamax mammillatus (Nilsson, 1826) and Belemnitella mucronata (von Schlotheim, 1813) (Seltzer & Ivanov 2010), the ammonite Hoplitoplacenticeras sp., the bivalves Oxytoma psilomonica Ivanov, 1993, O. tenuicostata (Roemer, 1841), Cataceramus balticus (Bőhm, 1907), andC. regularis (d'Orbigny, 1845) and benthic foraminifers of the Cibicidoides aktulagayensis (Vasilenko, 1950) Subzone of the Brotzenella monterelensis (Marie, 1941) Regional Zone (Olferiev et al 2004(Olferiev et al , 2007Olferiev & Alekseev 2005). Based on these biostratigraphic markers, the part of the Rybushka Formation below the phosphorite was deposited during the lower Campanian (Belemnitella mucronata alpha and Belemnellocamax mammillatus regional mollusk zones), and strata above the phosphorite are of upper Campanian age (Hoplitoplacenticeras coesfeldiense/ Belemnitella mucronata Regional Zone) (Olferiev & Alekseev 2005).…”

Section: Geological Settingmentioning

confidence: 99%

Marine Fishes (Chondrichthyes, Holocephali, Actinopterygii) From the Upper Cretaceous (Campanian) Rybushka Formation Near Beloe Ozero, Saratov Oblast, Russia

Ebersole

Solonin

Cicimurri

et al. 2022

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A diverse fish paleofauna occurs in the upper Campanian portion of the Rybushka Formation exposed near Saratov city in the Saratov Oblast, Russia. Twenty taxa have been identified, including two holocephalans (Ischyodus bifurcatus and Amylodon karamysh), twelve elasmobranchs (Synechodus sp., Cederstroemia sp., Cretalamna cf. C. borealis, C. cf. C. sarcoportheta, Archaeolamna kopingensis, Eostriatolamia segedini, E. venusta, Pseudocorax laevis, Squalicorax kaupi, Squalicorax morphotype 1, Squalidae indet., and Squatirhina sp.), and six teleosts (Pachyrhizodus sp., Saurocephalus lanciformis, Paralbula casei, Enchodus cf. E. dirus, E. cf. E. gladiolus, and E. petrosus). Many of these taxa are new to the Campanian fish record of Russia, and the assemblage demonstrates that there is significant taxonomic overlap between the Rybushka Formation paleofauna and that of North America.

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Section: Geological Settingmentioning

confidence: 99%

Marine Fishes (Chondrichthyes, Holocephali, Actinopterygii) From the Upper Cretaceous (Campanian) Rybushka Formation Near Beloe Ozero, Saratov Oblast, Russia

Ebersole

Solonin

Cicimurri

et al. 2022

RIPS

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“…This fossil marker is widespread in uppermost Santonian to lowermost Campanian strata of the Arctic (e.g. Jeletzky, 1970; Sahagian, Beisel & Zakharov, 1994; Olfer'ev et al 2008).…”

Section: The Kanguk Formationmentioning

confidence: 99%

U–Pb geochronology of bentonites from the Upper Cretaceous Kanguk Formation, Sverdrup Basin, Arctic Canada: constraints on sedimentation rates, biostratigraphic correlations and the late magmatic history of the High Arctic Large Igneous Province

et al. 2016

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U–Pb ages of zircon from bentonites within the upper Cretaceous Bastion Ridge and Kanguk formations, Sverdrup Basin, provide constraints on sedimentation rates, biostratigraphic correlations, timing of Oceanic Anoxic Event 2 (OAE2) in the High Arctic, and the late magmatic history of the High Arctic Large Igneous Province (HALIP). A late Cenomanian to early Turonian age for the base of the Kanguk Formation is confirmed that supports correlations of the global OAE2 in the High Arctic. Sedimentation rates varied from 19 m Ma−1 between 93 and 91 Ma to 26 m Ma−1 between 91 and 83 Ma at Axel Heiberg Island. At Ellef Ringnes Island, the lower Kanguk Formation records high rates of ~70 m Ma−1 between 94 and 93 Ma, which decrease to rates comparable to those of the upper Axel Heiberg section. Differences in sedimentation rates may reflect differences in setting prior to the major transgression in the latest Cenomanian to early Turonian. The timing of Arctic occurrences of the Scaphites nigricollensis and Scaphites depressus ammonite zones is shown to be broadly comparable to that of lower-latitude occurrences within the Western Interior Seaway. An eruption frequency of 0.5–2.5 Ma characterizes the late alkaline phase of HALIP magmatism. Volcanic bed thicknesses of 10–50 cm suggest ash transport distances of less than 1000 km. Long-lived volcanic centres, in the area of the Alpha Ridge, northern Ellesmere Island or northern Greenland, were the likely source of volcanic ash over a period of 10–15 Ma.

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“…The late Santonian to early Campanian inoceramid Sphenoceramus patootensis is a widespread boreal marker species, found in Arctic Siberia (e.g. Sahagian et al, 1994;Olfer'ev et al, 2008) and North America (e.g. Jeletzky, 1970, Olsen andPedersen, 1991).…”

Section: Sverdrup Basinmentioning

confidence: 99%

An integrated chemostratigraphic and biostratigraphic framework and benthic foraminifera morphogroup response to paleoenvironmental conditions of the Upper Cretaceous Kanguk Formation, Canadian Arctic Archipelago

Davies¹

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The Kanguk Formation, a unit of dominantly shales and siltstones deposited within the Sverdrup Basin, records the Late Cretaceous history of the Sverdrup Basin, Canadian Arctic Archipelago. This project aimed to refine foraminiferal biostratigraphy and to understand the benthic foraminiferal response to spatial and temporal changes in paleoenvironmental conditions of the Late Cretaceous Polar Sea by integrating chemostratigraphic, lithologic, geochemical, and faunal records at two study localities on Ellesmere Island, Nunavut, Canada. Two biostratigraphic zones with refined ages from

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Upper Cretaceous deposits in the northwest of Saratov region, Part 2: Problems of chronostratigraphy and regional geological history

Cited by 15 publications

References 8 publications

Marine Fishes (Chondrichthyes, Holocephali, Actinopterygii) From the Upper Cretaceous (Campanian) Rybushka Formation Near Beloe Ozero, Saratov Oblast, Russia

Marine Fishes (Chondrichthyes, Holocephali, Actinopterygii) From the Upper Cretaceous (Campanian) Rybushka Formation Near Beloe Ozero, Saratov Oblast, Russia

U–Pb geochronology of bentonites from the Upper Cretaceous Kanguk Formation, Sverdrup Basin, Arctic Canada: constraints on sedimentation rates, biostratigraphic correlations and the late magmatic history of the High Arctic Large Igneous Province

An integrated chemostratigraphic and biostratigraphic framework and benthic foraminifera morphogroup response to paleoenvironmental conditions of the Upper Cretaceous Kanguk Formation, Canadian Arctic Archipelago

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