TITLE:
Diatoms from Middle Miocene Continental Deposits of Primorye
AUTHORS:
Olesya Yu. Likhacheva
KEYWORDS:
Miocene, Diatoms, Stratigraphy, Paleoclimate
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.2 No.3,
June
13,
2014
ABSTRACT:
Diatoms from Middle Miocene deposits of
Khanka Lake’s northwestern shore (Primorye) were studied using light and
scanning microscopes. The analyses of diatom flora composition and species
diversity showed that there was a dominace of several taxa that made possible
the recognition of two diatom complexes. The lower complex differs from the
upper one by higher species diversity, by presence of many subtropical diatoms
and absence of pronounced dominant species. Differences between the complexes
can be explained by the progressing climatic cooling and predominance of
fluvial-lakustrine sedimentation over the typically lake one due to development
of a wide system of river valleys.