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Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia

Andrey Yu. Gladenkov ; Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow 119017, Russia

Puni tekst: engleski, pdf (667 KB) str. 199-209 preuzimanja: 747* citiraj
APA 6th Edition
Gladenkov, A.Y. (2009). Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia. Acta Botanica Croatica, 68 (2), 199-209. Preuzeto s https://hrcak.srce.hr/41423
MLA 8th Edition
Gladenkov, Andrey Yu.. "Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia." Acta Botanica Croatica, vol. 68, br. 2, 2009, str. 199-209. https://hrcak.srce.hr/41423. Citirano 07.12.2021.
Chicago 17th Edition
Gladenkov, Andrey Yu.. "Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia." Acta Botanica Croatica 68, br. 2 (2009): 199-209. https://hrcak.srce.hr/41423
Harvard
Gladenkov, A.Y. (2009). 'Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia', Acta Botanica Croatica, 68(2), str. 199-209. Preuzeto s: https://hrcak.srce.hr/41423 (Datum pristupa: 07.12.2021.)
Vancouver
Gladenkov AY. Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia. Acta Botanica Croatica [Internet]. 2009 [pristupljeno 07.12.2021.];68(2):199-209. Dostupno na: https://hrcak.srce.hr/41423
IEEE
A.Y. Gladenkov, "Fossil diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka, Russia", Acta Botanica Croatica, vol.68, br. 2, str. 199-209, 2009. [Online]. Dostupno na: https://hrcak.srce.hr/41423. [Citirano: 07.12.2021.]

Sažetak
The Oligocene diatom flora from the marine Paleogene stratigraphic key section of northeast Kamchatka is described for the first time. The fossil flora contains a number of taxa of moderate to poor preservation and low abundance. Analysis of stratigraphic occurrence of diatoms throughout the section has been conducted. Two diatom assemblages of different ages are recognized in different parts of the 900 m-thick Alugivayam Formation. The younger assemblage is characterized by the presence of Cavitatus sp. cf. jouseanus and
Odontella sawamurae. Co-occurrence of these taxamay indicate the age of enclosing sediment not older than ~31 Ma (the early Oligocene). The older assemblage from the basal part of the Alugivayam Formation lacks the mentioned taxa but contains Stephanopyxis species such as St. grunowii and St. marginata. Most likely, its age is at the earliest Oligocene. It is shown that in the studied Paleogene stratigraphic section diatoms appear just above the Eocene/Oligocene boundary. Data obtained on diatoms and diatom biomarkers may indicate increased diatom productivity in the sea basin after the Eocene/ Oligocene transition. The first data on diatom flora from stratigraphically well-controlled samples support the Oligocene age of the Alugivayam Formation in the Il’pinskii Peninsula section and contribute to regional correlations of theOligocene strata in Kamchatka.

Ključne riječi
diatom; biostratigraphy; Paleogene; Oligocene; Pacific; Kamchatka

Hrčak ID: 41423

URI
https://hrcak.srce.hr/41423

Posjeta: 1.036 *