Reasons for the outbreak of microphytoplankton productivity in the late Oligocene Turtas Lake–Sea, Western Siberia

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

1 Цитирования (Scopus)

Аннотация

Palynological (dinocysts) and geochemical data were compared for the first time for Paleogene sediments of borehole no. 8 (settlement of Russkaya Polyana, Omsk oblast). The layers with a concentrated amount of dinocysts of the genus Pseudokomewuia (20.5% of the palynocomplex) are characterized by higher contents of Fe, P, Ti, Nb, Ta, and W. The microphytoplankton bloom (an analog of the present-day red tides) in the late Oligocene Turtas Lake–Sea was probably caused by a greater contribution of nutrient substances from the continent during the transgression of this basin. Comparative analysis of the geochemical features of marine and continental Paleogene sediments from borehole no. 8 showed that the Turtas basin was either freshwater or had brackish water.

Язык оригиналаанглийский
Страницы (с-по)620-623
Число страниц4
ЖурналDoklady Earth Sciences
Том474
Номер выпуска2
DOI
СостояниеОпубликовано - 1 июн 2017
Опубликовано для внешнего пользованияДа

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