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1.
A. Yu. Rozanov V. V. Khomentovsky Yu. Ya. Shabanov G. A. Karlova A. I. Varlamov V. A. Luchinina T. V. Pegel’ Yu. E. Demidenko P. Yu. Parkhaev I. V. Korovnikov N. A. Skorlotova 《Stratigraphy and Geological Correlation》2008,16(1):1-19
It was a serious mistake when subdivision stratotypes had been disposed of in practice of constructing the General stratigraphic scale, because they cannot be substituted by the boundary stratotypes. A subdivision stratotype and respective GSSP are complementary parts characterizing any stratigraphic unit. The best candidates for stage stratotypes of the Lower Cambrian are certainly sections of the Lena-Aldan region in the Siberian platform, which have been studied in detail during many years, are well exposed, and contain abundant and diverse fossils, being insignificantly disturbed by tectonic dislocations. Nomenclature, stage and boundary stratotypes of the Siberian standard can be successfully used therefore for stratigraphic subdivision of the Lower Cambrian. 相似文献
2.
Natural observations were analyzed to study the distribution of dissolved species of major and trace elements in the Onega and Mezen’ mouth areas and the tendencies in the chemical transformations of the is continental runoff in the river mouths of the White Sea drainage system. It is shown that the migration of major ions and dissolved species of Li, Rb, Cs, Sr, B, F and Mo is consistent with a conservative behavior and is controlled by hydrodynamic processes. The amounts of uranium and barium additionally supplying in the Mezen’ mouth exceed those removed with a continental runoff, whereas the Onega, Severnaya Dvina, and other rivers of the White Sea drainage system are characterized by the conservative behavior of uranium, while barium desorption from particulate matter reaches no more than 33% of its content in the riverine waters. The growth of concentrations of these elements in the Mezen’ mouth is caused by the long-term interaction of solid matters of the continental runoff with saline waters in the tide-affected estuary. 28–59, 12–63, 25–67 and 20–63% of concentrations of iron, aluminum, lanthanum, and cerium are removed from the riverine waters in the mouth areas of all studied rivers of the White Sea drainage system mainly owing to the coagulation and flocculation of organic and organomineral colloids. The distribution of dissolved species of mineral phosphorus and silicon in the Mezen’ mouth is presumably controlled by the remineralization of the organic matter in the bottom sediments, which due to the hydrological features of estuary are regularly stirred up and interact with vertically mixing water sequence. Up to 20–46% of dissolved phosphates and 3–22% of silicon are removed from the continental runoff during vegetation period in the mouths of the Onega, Severnaya Dvina, and other rivers of the White Sea drainage system mainly owing to their biological consumption. 相似文献
3.
J. N. Pattan Ch. M. Rao A. A. Migdisov S. Colley N. C. Higgs L. Demidenko 《Marine Georesources & Geotechnology》2001,19(3):155-165
The rare earth element (REE) distribution in nine deep-sea ferromanganese nodules and their associated siliceous sediments from the Central Indian Ocean Basin (CIOB) have been studied to elucidate the REE relationship among them. Total REE concentration varies from 398-928 ppm in the nodules and 137-235 ppm in the associated sediments, suggesting two- to four-fold enrichment in the nodules compared to associated sediments. REE of nodules and their associated sediments show a positive correlation, suggesting REE are supplied from a common source such as seawater. The positive correlation between REE of nodules and sediments from the CIOB is contrary to the competitive scavenging of REE between nodules and sediment in the equatorial Pacific Ocean. REEs in the nodules are carried by Fe, P, and Ti, whereas in the sediment they are carried by P and Mn phases. A similar REE fractionation pattern with middle REE enrichment over heavy and light REE in both the nodules and their associated sediment suggest fractionation is independent of REE abundance and their carrier phases. 相似文献
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5.
N. A. Rimskii-Korsakov V. N. Korotaev V. V. Ivanov A. A. Pronin N. A. Demidenko 《Oceanology》2013,53(5):630-638
New data on the Onega River estuary’s hydrological and morpholithodynamic regimes are presented. The river’s bottom structure and soil lithology are described on the basis of field sonar survey materials. Proceeding from the analysis of the hydrographic maps, the dynamics of the Onega River’s mouth bar is tracked over the period of 1830–2000. 相似文献
6.
Oceanology - The spatial and temporal variability of the transformation of dissolved matter runoff in the Mezen River estuary is studied from data on comprehensive hydrological–hydrochemical... 相似文献
7.
J. N. Pattan Ch. M. Rao A. A. Migdisov S. Colley N. C. Higgs L. Demidenko 《Marine Georesources & Geotechnology》2013,31(3):155-165
Abstract The rare earth element (REE) distribution in nine deep-sea ferromanganese nodules and their associated siliceous sediments from the Central Indian Ocean Basin (CIOB) have been studied to elucidate the REE relationship among them. Total REE concentration varies from 398–928 ppm in the nodules and 137–235 ppm in the associated sediments, suggesting two- to four-fold enrichment in the nodules compared to associated sediments. REE of nodules and their associated sediments show a positive correlation, suggesting REE are supplied from a common source such as seawater. The positive correlation between REE of nodules and sediments from the CIOB is contrary to the competitive scavenging of REE between nodules and sediment in the equatorial Pacific Ocean. REEs in the nodules are carried by Fe, P, and Ti, whereas in the sediment they are carried by P and Mn phases. A similar REE fractionation pattern with middle REE enrichment over heavy and light REE in both the nodules and their associated sediment suggest fractionation is independent of REE abundance and their carrier phases. 相似文献
8.
Multidisciplinary studies of the separating lakes at different stage of isolation from the White Sea performed in March 2012 总被引:1,自引:0,他引:1
9.
N. A. Rimskii-Korsakov V. N. Korotaev V. V. Ivanov A. A. Pronin N. A. Demidenko 《Oceanology》2017,57(2):315-327
The paper presents new data on the morpholithodynamic regime of the foredelta and deltaic branches of the Northern Dvina River. Based on data from field sonar investigations, the bottom structure and lithology of bottom sediments are described. Using hydrographic and topographic charts and satellite images, we traced the dynamics of deltaic branches and bottoms in the outfall offshore zone of the Northern Dvina River for the period of 1832–2013. 相似文献
10.
I.?V.?Miskevich A.?M.?AlabyanEmail author V.?B.?Korobov N.?A.?Demidenko A.?A.?Popryadukhin 《Oceanology》2018,58(3):350-353
The paper presents information on joint research of the short-term (tidal and synoptic) variability of the hydrological and hydrochemical parameters during the summer 2016 low-water period in mesotidal estuary of the Kyanda River, which flows into Onega Bay, the White Sea. It is demonstrated that semidiurnal, diurnal, and synoptic variations of almost all observed parameters are significant and differ notably along the estuary. 相似文献