Change of micropaleontological assemblages at the Cretaceous-Paleogene Boundary in Western Siberia

V.M. Podobina; V.M. Kabanova; T.G. Kseneva

doi:10.54991/jop.1997.1332

Authors

V.M. Podobina Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
V.M. Kabanova Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
T.G. Kseneva BTomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia

DOI:

https://doi.org/10.54991/jop.1997.1332

Keywords:

Cretaceous-Tertiary Boundary, Foraminiferal zones, Palynocomplex, Maastrichtian, Danian, Russia, Siberia

Abstract

The foraminiferal and spore-pollen complexes were studied at the boundary of Maastrichtian-Danian (CretaceousPalaeogene) in Western Siberia. Terrigenic-argillaceous rocks with admixture of carbonaceous material from the upper part of Gankinsky Suite and lower layers of Talitsky Suite belong to this stratigraphical interval. Carbonaceous secreted and secreted agglutinated shells predominate among benthic Foraminifers. Planktonic forms were seldom and consist of representatives of the genera - Rugoglobigerina and Guembelina in the Maastrichtian and genera Globigerina and (rarely) Globorotalia in the Danian. At the Cretaceous-Palaeogene Boundary, palynocomplexes consist of group of angiosperm pollen. The flora producing Triprojectacites - type pollen became extinct in Late Maastrichtian. The active settling of western Siberia by "Norma" flora was confined to the beginning of the Palaeogene. Parallel with Normapolles representatives of Myricaceae, Fagaceae, Ulmaceae, Juglandaceae, Betulaceae, etc. originated and formed. They forced Out the short-lived group of large-pollen "Norma" by the end of Paleocene.

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References

Brotzen F 1948. The Swedish Paleocene and its foraminiferal fauna. Sver. Geol. Undersok., Ser. C, 42 (2): 1-140.

Freiman EV 1962. Paleocene foraminifera assemblages of West Siberian plain. Materials on paleontology and stratigraphy of Western Siberia: 52-65. Gostoptechizdat Press, Leningrad.

Grigoryeva KN 1968. Spore-pollen complexes of Maastrichtian deposits of West Siberian lowland. Palynological method in stratigraphy: 131-150. Leningrad

Grigoryeva KN 1970. Palynological basing of stratigraphical subdivision of Senonian deposits in eastern and southeastern part of West Siberian lowland: 1-19. Autoref. dissert. for a candidate degree. Tomsk.

Iljenok LL 1968. Palynological characteristic of Paleocene in Western Siberia. Paleopalynological method in stratigraphy: 188-198. Moscow.

Khlonova AF 1974. Palynology of Cretaceous deposits in Siberia and the Far East. Nauka Press, Novosibirsk.

Kiselman EN 1974. Upper Maastrichtian foraminiferal assemblages of Spiroplectammina kasanzevi Zone in the eastern part of West Siberian plain. Materials on stratigraphy and paleontology of Siberia: 122-127.

Mtchedlishvili ND 1961. Palynological characteristic of Cretaceous deposits in Western Siberia. Maastrichtian-Danian. Pollen and spores of Western Siberia. Jurassic-Paleocene: 329-333.

Nagorskaya EP, Aleksandrova A & Iljenok LL. 1975. Palaeocene and Eocene of Ketsky Priobje. Paleogene and Neogene of Siberia: 93-100. Nauka Press, Novosibirsk.

Podobina VM 1975. Upper Cretaceous and Paleogene foraminifera in West Siberian plain and their significance for stratigraphy. Univ. of Tomsk Press, Tomsk.

Podobina VM 1984. Paleozoogeographical regionalization of Late Cretaceous basins of Western Siberia and other aquatoria of the Northern hemisphere by data of foraminiferal investigation. Univ. of Tomsk Press, Tomsk.

Podobina VM 1988. New data on distribution of Late Maastrichtian foraminiferal zone in the southeast of Western Siberia. Materials on paleontology and stratigraphy of Western Siberia: 109-114. Univ. of Tomsk Press, Tomsk.

Podobina VM 1989. Foraminifera and zonal stratigraphy of the Upper Cretaceous in Western Siberia. Univ. of Tomsk Press, Tomsk.

Podobina VM 1992. The Danian stage of Western Siberia. Materials on paleontology and stratigraphy of Western Siberia: 80-83. Univ. of Tomsk Press, Tomsk.

Podobina VM 1994. Foraminifera of Cretaceous-Paleogene boundary deposits in Western Siberia (Kaimysovsky vault). Problems of geology in Siberia: 4-6. Univ. of Tomsk Press, Tomsk.

Podobina VM & Bessonenko EA 1988. New data on biostratigraphy of the Senonian in the southeast of Western Siberia. Materials on paleontology and stratigraphy of Western Siberia: 100-108. Univ. of Tomsk Press, Tomsk.

Podobina VM & Kseneva TG 1989. Microfaunal characteristic of boundary Cretaceous-Paleogene deposits in Western Siberia. Rational usage of natural resourses of Siberia: 79-80. Univ. of Tomsk Press, Tomsk.

Subbotina NN 1950. Microfauna and stratigraphy of Elburgansky horizon and the horizon of Goratchy klutch. Microfauna of USSR. sb.IV. Trudy VNIGRI, new ser. (57): 5-112.

Subbotina NN & Alekceitchik LS et al. 1964. Foraminifera of Cretaceous and Paleogene deposits of West Siberian lowland. Nedra Press, Leningrad.

Zaklinskaya ED 1960. The subdivision of Maastrichtian-Danian-Paleocene deposits of Western Siberia on the base of spore-pollen analysis data. The boundary of Cretaceous and Tertiary deposits: 181-190. Nauka Press, Moskow.

Zaklinskaya ED 1977. The development of flora at Mesozoic-Cenozoic boundary. Nauka Press, Moskow.