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Abstract
Diatoms from three sections of siliceous organogenic deposits in the Southern Primorye, that reflect the high productivity of diatoms in the Miocene and Pliocene, were studied. Monodominant floras with Aulacoseira praegranulata var. praeislandica f. praeislandica in the Middle Miocene (western shore of Lake Khanka) and Pliocene (near the village of Terekhovka) deposits, as well as those with Staurosira venter in Late Pliocene (upper flow of the Sergeyevka River) have been exposed. This high productivity of diatoms might have been caused by the development of the dense lake-river system in the south of Primorye; the long vegetation season under the conditions of a monsoon climate with its mild winter, formed by that time; active volcanism with eruption products that were the source of substances necessary for the diatom valve formation.
Published Version
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