排序方式: 共有19条查询结果,搜索用时 15 毫秒
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Ye. I. Polyakova Ye. A. Novichkova A. P. Lisitzin V. P. Shevchenko M. D. Kravchishina 《Oceanology》2016,56(2):289-300
Diatom algae, aquatic palynomorphs, and the grain-size of surface sediments from bays of the White Sea were investigated in a program dedicated to the study of marginal filters (MF) in the Severnaya Dvina, Onega, and Kem rivers. Three microalgal assemblages are established in surface sediments, which replace each other successively with distance from river mouths and are characterized by a gradual decrease in a share of freshwater species of diatoms and Chlorophyceae algae, significantly varying concentrations of marine diatoms and dinocysts due to changes in water salinity, grain-size composition of sediments, quantitative distribution of suspended particulate matter (SPM), and water productivity at different marginal filter stages. 相似文献
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Maslov A. V. Politova N. V. Klyuvitkin A. A. Kozina N. V. Kravchishina M. D. Novigatsky A. N. Novichkova E. A. Shevchenko V. P. 《Doklady Earth Sciences》2022,507(2):1124-1131
Doklady Earth Sciences - The systematics of REE, Sc, Cr, Zr, and Th in silty-pelitic and pelitic surface bottom sediments sampled during cruises 71, 75, 77, and 80 of the R/V Akademik Mstislav... 相似文献
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Oceanology - Multielement chemical analysis and oxygen isotopic data has been employed for the first time to study the distribution of certain geochemical indicators in a sediment core recovered on... 相似文献
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The Chaudian sediments composing the Pekla and Tuzla sections are characterized by a variable lithology and transgressive structure. Their basal part is mainly composed of coarse terrigenous varieties with diverse structures indicating different depositional settings in the accumulation zone (shelf and upper part of the submarine slope). These sediments are characterized by strong lithification probably in subaerial environments under the influence of atmospheric precipitation. The Chaudian basin was a large brackish-water depression populated by malacofauna of the Caspian type. 相似文献
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Novichkova E. A. Reykhard L. E. Belyaev N. A. Aliev R. A. Starodymova D. P. Kudryavtseva E. A. 《Oceanology》2020,60(5):664-681
Oceanology - The lithological and mineralogical characteristics of sea surface sediments, composition of microfossils, contribution of organic matter, and element composition have been studied in a... 相似文献
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Kravchishina M. D. Klyuvitkin A. A. Volodin V. D. Glukhovets D. I. Dubinina E. O. Kruglinskii I. A. Kudryavtseva E. A. Matul A. G. Novichkova E. A. Politova N. V. Savvichev A. S. Silkin V. A. Starodymova D. P. 《Oceanology》2022,62(4):572-574
Oceanology - Research regarding the conditions and processes of paleo- and modern sedimentation with an assessment of particles and pollution fluxes, with determination of the rates of... 相似文献