Research output: Contribution to journal › Article › peer-review
The Upper Jurassic of the Laptev Sea : interregional correlations and paleoenvironments. / Nikitenko, B. L.; Knyazev, V. G.; Peshchevitskaya, E. B. et al.
In: Russian Geology and Geophysics, Vol. 56, No. 8, 01.08.2015, p. 1173-1193.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The Upper Jurassic of the Laptev Sea
T2 - interregional correlations and paleoenvironments
AU - Nikitenko, B. L.
AU - Knyazev, V. G.
AU - Peshchevitskaya, E. B.
AU - Glinskikh, L. A.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - The Late Jurassic evolution of Boreal and Arctic basins is reflected in the widespread deposition of organic-rich black shales (source rocks). In this connection, the priority should be placed on the development and refinement of zonal schemes for the Upper Jurassic of the Laptev Sea coast based on ammonites, foraminifers, ostracods, dinocysts, and spores and pollen from reference sections as the basis for stratigraphic, paleogeographic, and facies studies. The Upper Jurassic and Lower Cretaceous reference section of interest is located on the left side of the Anabar Bay of the Laptev Sea (Nordvik Peninsula, Urdyuk-Khaya Cape). An uninterrupted and continuous section from Upper Oxfordian to Lower Valanginian is exposed in coastal cliffs and consists mainly of silty clay deposits with abundant macro- and microfossils. A reliable biostratigraphic subdivision of the Upper Jurassic interval of this section was taken as the basis for the assessment of the correlation potential of different fossil groups and subsequent interregional correlations, facies analysis, and detailed paleogeographic reconstructions of the study area. The analysis of variations in the composition of macrobenthic communities and microphytoplankton and terrestrial palynomorph assemblages and the biofacies analysis allowed the reconstruction of the evolution of marine paleoenvironmental settings in the western part of the Anabar-Lena sea and in the terrestrial settings in the adjacent land area of Siberia.
AB - The Late Jurassic evolution of Boreal and Arctic basins is reflected in the widespread deposition of organic-rich black shales (source rocks). In this connection, the priority should be placed on the development and refinement of zonal schemes for the Upper Jurassic of the Laptev Sea coast based on ammonites, foraminifers, ostracods, dinocysts, and spores and pollen from reference sections as the basis for stratigraphic, paleogeographic, and facies studies. The Upper Jurassic and Lower Cretaceous reference section of interest is located on the left side of the Anabar Bay of the Laptev Sea (Nordvik Peninsula, Urdyuk-Khaya Cape). An uninterrupted and continuous section from Upper Oxfordian to Lower Valanginian is exposed in coastal cliffs and consists mainly of silty clay deposits with abundant macro- and microfossils. A reliable biostratigraphic subdivision of the Upper Jurassic interval of this section was taken as the basis for the assessment of the correlation potential of different fossil groups and subsequent interregional correlations, facies analysis, and detailed paleogeographic reconstructions of the study area. The analysis of variations in the composition of macrobenthic communities and microphytoplankton and terrestrial palynomorph assemblages and the biofacies analysis allowed the reconstruction of the evolution of marine paleoenvironmental settings in the western part of the Anabar-Lena sea and in the terrestrial settings in the adjacent land area of Siberia.
KW - Ammonites
KW - Biofacies
KW - Dinocysts
KW - Foraminifers
KW - Kimmeridgian
KW - Laptev Sea
KW - Nordvik Peninsula
KW - Oxfordian
KW - Paleogeography
KW - Shelf
KW - Stratigraphy
KW - Volgian
UR - http://www.scopus.com/inward/record.url?scp=84938802403&partnerID=8YFLogxK
U2 - 10.1016/j.rgg.2015.07.008
DO - 10.1016/j.rgg.2015.07.008
M3 - Article
AN - SCOPUS:84938802403
VL - 56
SP - 1173
EP - 1193
JO - Russian Geology and Geophysics
JF - Russian Geology and Geophysics
SN - 1068-7971
IS - 8
ER -
ID: 25722715