Palynological Characteristic of the Eocene–Early Miocene of the Kvachina Bay Section, West Kamchatka

— Six associations of dinocysts, spores, and pollen of various ages are distinguished in the Cenozoic marine deposits of the Kvachina Bay section as a result of study of stratigraphic occurrence of palynomorphs. Their analysis allowed us to date the deposits of the Tigil and Belesovataya units to th...

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Bibliographic Details
Published in:Stratigraphy and geological correlation 2019-05, Vol.27 (3), p.361-387
Main Author: Aleksandrova, G. N.
Format: Article
Language:English
Subjects:
Archaeology
Cenozoic
Dislocations
Earth and Environmental Science
Earth Sciences
Eocene
Geophysics/Geodesy
Historical Geology
Miocene
Oligocene
Paleoenvironments
Palynology
Pollen
Ratios
Sedimentology
Spores
Stratigraphy
Structural Geology
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Summary:— Six associations of dinocysts, spores, and pollen of various ages are distinguished in the Cenozoic marine deposits of the Kvachina Bay section as a result of study of stratigraphic occurrence of palynomorphs. Their analysis allowed us to date the deposits of the Tigil and Belesovataya units to the Bartonian–Priabonian and Oligocene–Early Miocene, whereas the overlapping lower part of the Kavran Group is dated to the Early Miocene. The age of dislocated rocks beneath the Tigil Unit is estimated as late Ypresian–?early Lutetian. On the basis of the revealed changes in the ratios of the ecological groups of palynomorphs, conclusions were made about the paleoenvironments in which the formation of strata took place in various time intervals.
ISSN:0869-5938
1555-6263
DOI:10.1134/S086959381903002X