Reasons for the outbreak of microphytoplankton productivity in the late Oligocene Turtas Lake–Sea, Western Siberia. / Kuzmina, O. B.; Kuzmin, D. V.; Shurygin, B. N.
In: Doklady Earth Sciences, Vol. 474, No. 2, 01.06.2017, p. 620-623.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Reasons for the outbreak of microphytoplankton productivity in the late Oligocene Turtas Lake–Sea, Western Siberia
AU - Kuzmina, O. B.
AU - Kuzmin, D. V.
AU - Shurygin, B. N.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85024098467&partnerID=8YFLogxK
U2 - 10.1134/S1028334X17060204
DO - 10.1134/S1028334X17060204
M3 - Article
AN - SCOPUS:85024098467
VL - 474
SP - 620
EP - 623
JO - Doklady Earth Sciences
JF - Doklady Earth Sciences
SN - 1028-334X
IS - 2
ER -
ID: 25830203