New ammonite zonation of the lower Callovian in North Siberia

Knyazev, V. G.; Кутыгин, Р. В.; Meledina, S. V.

doi:10.1134/s0869593810040039

Cited by 6 publications

(3 citation statements)

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“…10,11). Recent data on the stratigraphic range of some Cardioceratidae species indicate that some sediments, which used to be considered as the Middle Callovian, should be included in the Lower Callovian (Knyazev et al, 2010). The stratigraphic volume and boundaries of some biostratigraphic units in the uppermost Lower and Middle Callovian have been refined, so that they can be regarded at the zonal level (Fig.…”

Section: Ammonite Zonal Scalementioning

confidence: 98%

“…They are only represented by the uppermost Bathonian with Kepplerites ex gr. rosenkrantzi and Cadoceras perrarum , and the Lower Callovian (Cadoceras elatmae, C. tschernyschewi, and C. tolype Zones) (Knyazev et al, 2010) having total thickness of about 30 m (Figs. 2, 3, 6).…”

Section: Lithostratigraphymentioning

confidence: 99%

“…The following biostratigraphic units are proposed for the Lower Callovian: Cadoceras elatmae Zone (with the C. frearsi and C. elatmae Subzones), C. tschernyschewi Zone, C. tolype Zone, beds with Cadoceras sublaeve (Knyazev et al, 2010(Knyazev et al, , 2011a as well as the Cadoceras durum Zone established for the first time. The Middle Callovian here contains the following biostratigraphic units here: beds with Cadoceras wosnessenskii and C. postelatmae in the lower part, and the Rondiceras (?)…”

Section: Lithostratigraphymentioning

confidence: 99%

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Jurassic and Cretaceous stratigraphy of the Anabar area (Arctic Siberia, Laptev Sea coast) and the Boreal zonal standard

Nikitenko

Шурыгин

Knyazev

et al. 2013

Russian Geology and Geophysics

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Recent integrated studies of Mesozoic reference sections of the Anabar area (northern Middle Siberia, Laptev Sea coast) and the reinterpretation of all the previous data on a modern stratigraphic basis permit considerable improvement of the bio-and lithostratigraphic division and facies zoning of Jurassic and Cretaceous sediments in the region. Analysis of abundant paleontological data allows the development or considerable improvement of zonal scales for ammonites, belemnites, bivalves, foraminifers, ostracods, dinocysts, and terrestrial palynomorphs from several Jurassic and Cretaceous intervals. All the zonal scales have been calibrated against one another and against regional ammonite scale. Reference levels of different scales useful for interregional correlation have been defined and substantiated based on the analysis of lateral distribution of fossils in different regions of the Northern Hemisphere. It provides the possibilities to propose and consider parallel zonal scales within the Boreal zonal standard for the Jurassic and Cretaceous periods. A combination of these scales forms an integrated biostratigraphic basis for a detailed division of Boreal-type sediments regardless of the place of their formation and for the comparison with the international stratigraphic standard as far as a possible use of a set of reference levels for correlation.

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Section: Ammonite Zonal Scalementioning

confidence: 98%

Section: Lithostratigraphymentioning

confidence: 99%

Section: Lithostratigraphymentioning

confidence: 99%

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