Vestnik of Saint Petersburg University Earth Sciences最新文献

{"title":"Invasions of insect pests and fungal pathogens of woody plants into the northwestern part of European Russia","authors":"A. Selikhovkin, R. Drenkhan, M. Mandelshtam, D. Musolin","doi":"10.21638/spbu07.2020.203","DOIUrl":"https://doi.org/10.21638/spbu07.2020.203","url":null,"abstract":"","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85884131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accumulation level and fractions of heavy metals in sediments of small lakes of the urbanized area (Karelia)","authors":"Z. Slukovskii","doi":"10.21638/spbu07.2020.109","DOIUrl":"https://doi.org/10.21638/spbu07.2020.109","url":null,"abstract":"","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74604467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The establishment of the background of raised bogs in various regions of Russia for justification ofpermissible impact standards","authors":"T. Potapova, Michael L. Markov, Olga V. Zadonskaya","doi":"10.21638/spbu07.2020.303","DOIUrl":"https://doi.org/10.21638/spbu07.2020.303","url":null,"abstract":"","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75020124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rural way of life: the experience of studying the example of small villages in the Leningrad region","authors":"A. I. Alekseev, O. Vasilyeva, V. S. Udovenko","doi":"10.21638/spbu07.2020.304","DOIUrl":"https://doi.org/10.21638/spbu07.2020.304","url":null,"abstract":"Annotation The article discusses some aspects of the formation of a modern rural lifestyle, their manifestation, taking into account the peculiarities of the geographical location, transport accessibility and a number of demographic parameters. The results of field studies of three rural settlements of the Leningrad region are presented. A large role in collecting information for this work was played by the use of the tools of the social network “Vkontakte”. With the help of open information from the communities of rural settlements, it was possible to compile an initial description of rural settlements, to conduct an online survey of residents of villages and summer residents. Also, through a social network, the authors managed to contact summer residents and local residents of the rural settlements, who subsequently agreed to a personal meeting and interview. Based on the results of cameral and field studies, portraits of studied rural settlements were compiled, current trends in the rural way of life were revealed: employment, life, behavioral habits, self-determination of permanent residents and summer residents. A comparative assessment between the real and official data on the population of these villages in winter and summer is given; the types of the studied rural settlements are determined taking into account their socio-demographic characteristics: rural settlements intelligentsia of average wealth, rural settlements of summer residents of prosperity above average and rural settlements with a mixed composition of residents. Several categories of summer residents of the studied rural settlements were identified: 1) relatives of permanent residents of rural settlements; 2) people living and working in the city who have acquired leisure property on the territory of rural settlements and have not been associated with it in any way; 3) people living and working in the city who continue to housekeeping their deceased parents and 4) guests of permanent residents and summer residents staying for a certain period of time (from 3 days or more) in the rural settlements, as well as tenants.","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74876672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of recreational disturbance and the regulation of loads on natural protected areas in Saint-Petersburg","authors":"T. Isachenko, G. A. Isachenko, S. Ozerova","doi":"10.21638/spbu07.2020.102","DOIUrl":"https://doi.org/10.21638/spbu07.2020.102","url":null,"abstract":"","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75690370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lithogeochemistry of clayey rocks and volcanic tuffs in the Vendian succession of the western slope of the Middle Urals: similarities and differences","authors":"A. Maslov","doi":"10.21638/spbu07.2020.309","DOIUrl":"https://doi.org/10.21638/spbu07.2020.309","url":null,"abstract":"The lithogeochemical features of gray- and green-colored, as well as red-colored clayey rocks and volcanic tuffs found among Vendian deposits of the western slope of the Middle Urals (Serebryanka Group, Koiva Formation; Sylvitsa Group, Starye pechi Formation, Chernyi Kamen Formation) are considered. The materials presented and their analysis make it possible to reasonably assume that clayey rocks of usual color and their red-colored varieties do not fundamentally differ in their characteristics. On the discriminant lithogeochemical diagrams, their data points form fields characterized by significant, if not almost complete, overlaps. Moreover, as follows from an analysis of the Strakhov and Boström module values, as well as the position of the data points on the (Y/Ho) PAAS –(Ce/Ce *) PAAS diagram, they do not contain exhalation components. The sources of the fine-grained aluminosilicoclastic material for clayey rocks of different colors were mainly acidic (magmatic?) rocks. Volcanic tuffs, on the contrary, are composed of material similar in composition to trachyandesites, andesites, and trachyandesibasalts. The data presented in the article give reason to believe that the red color of many clay rocks present among the Vendian deposits of the Middle Urals is the result of pedogenic processes, as is expected for the red-colored rocks present among the Upper Riphean and Vendian deposits of the Southern Urals. On the other hand, some of the interlayers that we took in the field for volcanic tuffs, as previously assumed, can be ordinary sedimentary rocks, the color of which was changed by secondary processes (gleying, etc.), including modern ones.","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76131541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Kis-Kuel Fe-Cu-Au±(Ag, Mo, Bi) deposit, Eastern Yakutia (Russia) – a link between Iron Oxide Copper-Gold and Intrusion Related Gold systems","authors":"Алексей Валентинович Костин","doi":"10.21638/spbu07.2019.401","DOIUrl":"https://doi.org/10.21638/spbu07.2019.401","url":null,"abstract":"The Iron Oxide Copper-Gold (IOCG) deposit class includes a number of loosely related deposits with a pool of common characteristics. The Kis-Kuel intrusion-related IOCG deposit in Eastern Yakutia (Russia) with a wide range of mineral styles has a direct genetic link with a cooling intrusion during its formation. The IOCG and the Kis-Kuel have common features for this style - the abundance of iron oxides and low of sulfides. Magmatic contribution to the Kis-Kuel deposit is significant. Intrusive rocks range from diorite to granodiorite in composition. Rare-earth geochemical system of igneous rocks of the Kis-Kuel intrusive is characterized by behavior close to the CHArge-and-RAdius-Controlled CHARAC-system (26<Zr/Hf<46 и 24<Y/Ho<34) in which the Н/Ho – Zr/Hf ratios of the pair show a distribution close to chondrite (Zr/Hf – 36.6 and Y/Ho – 27.7). Minor deviations of the Kis-Kuel rocks from the CHARAC intervals indicate a unevolved magmatic system. Mineralization was discovered at the top of small Kis-Kuel pluton and includes several types of ore. Iron Oxide Copper-Gold and Cu-Au-porphyry ore breccia in hornfelsed aureole of intrusive grades FeOX – 13.58-63.24%; Cu – 0-3.57%; Au – 12.93-64.48 g/t; Ag – 2.7-830 g/t. Associated with IOCG, quartz-hematite-galena veins grade Ag – 22.4-3680 g/t; Cu – 0.014-0.534%; Pb – 0.1-81.63%. Arrays of sheeted auriferous quartz veins with arsenopyrite, native gold and bismuth and Ag-Bi sulphosalts grade: Au – 0.15-4.6 g/t; Ag – 20.6-196 g/t; Cu – 0.048-0.24%; Pb – 0.3-3.73%. This paper is devoted to a Kis-Kuel diorite-granodiorite related deposit in the Eastern Yakutia (Russia). It is regarded as Intrusion Related Gold Deposit (IRGD) with a main IOCG and minor Cu-Au-porphyry component of mineralization.","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90963326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climatic Conditions of Steppe and Tundra Formations in the Altai Highland Depressions","authors":"K. Chistyakov, M. Amosov, I. Volkov, Y. N. Kurochkin, S. Lessovaia, Maria V. Manakova, Natalia A. Nehuzhenko, I. Strelkov, G. A. Tyusov, G. N. Shastina","doi":"10.21638/spbu07.2019.407","DOIUrl":"https://doi.org/10.21638/spbu07.2019.407","url":null,"abstract":"The data on climate and vegetation of the Altai highland depressions are mapped in this paper. The Bertek depression (located 2200 – 2400 m above sea level) and the lake depression of Khindiktig-Khol’ (2300 – 2400 m a.s.l.) are decided to be the study objects. The investigation is based on the information about vegetation and microclimatic differences received during the field research in 2018. Long-term observations of Bertek and Mugur-Aksy meteorological stations are applied to climate characteristics. The steppe vegetation is typical for the depressions. The tundra species also exist alongside the steppe ones within the Khindiktig-Khol’ region, though in some cases the intarsia of tundra and steppe is founded. Tundra communities are insignificant within the Bertek depression. Vegetation cover of the depressions develops under the conditions of short-term vegetation period and undergoes the negative impact of low summer temperatures (mean July temperatures in Bertek – +9,3°С; in Khindiktig-Khol’ – +10,8°С). The data are significantly lower than the mean temperatures of the flat steppe zone. Taking into account the temperature data, the investigated areas are associated with the tundra zone. The climate humidification level is not enough to develop the continuous cover of tundra cenosis (Vysotskii-Ivanov’s precipitation-evaporation ratio of Khindiktig-Khol’ equals 0,74, whereas in Bertek – 0,61). According to the fact above, Khindiktig-Khol’ depression is more humid, and the tundra communities live together with the steppe vegetation. Microclimatic observations of the neighboring areas with the different tundra and steppe cenoses show that the species, which are composing tundra with the dwarf birch (Betula rotundifolia), have unique features, thus creating favorable conditions for the existence of this community. Comparing to the steppe area, the air during the daylight heats better not only above the tundra pattern, but also beneath it. Moreover, the dwarf birch (Betula rotundifolia) keeps the snow cover, which results in a better soil humidification. Consequently, the vegetation cover is more diverse in Khindiktig-Khol’ depression and allows to figure out the appearance of exclusive tundra and steppe mixture.","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80281216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The tectonic subsidence evolution of the southern part of the East Barents sedimentary basin","authors":"S. P. Nilov, A. Moskalenko, A. Khudoley","doi":"10.21638/spbu07.2019.406","DOIUrl":"https://doi.org/10.21638/spbu07.2019.406","url":null,"abstract":"The history of the subsidence of the southern part of the East Barents sedimentary basin was reconstructed based on the interpretation of 6 seismic profiles along with data from rare deep wells. The total and tectonic subsidence were estimated, which made possible to determine the magnitude of the lithosphere stretching factor (β) throughout the history of the region. The values of the stretching factor (β) range from 2.5-3.0, for areas with highest thickness of sediments in the central part of the basin, to 1.25-1.66 for areas on the margins of the basin with lowest thickness of sediments. Close values of the stretching factor (β) characterize the Atlantic coast of North America in the area with predominant distribution of the transitional crust. Whether continental crust from adjacent areas of the Baltic shield (approximately 40 km) is accepted as undeformed, according to seismic data the crust thinning was approximately 2,5 that is close to thinning estimated from McKenzie model. The comparison of the obtained data with theoretical models of the passive margins subsidence indicates that the rifting and the transition to the stage of sedimentary basin formation occurred in accordance with the McKenzie uniform stretching model. Although available geological data show that the most intense rifting occurred in Late Devonian, shape of the total and tectonic subsidence show that the most intense deposition occurred in Permian and Triassic. This contradiction gives evidence for interpretation that after the Late Devonian rifting, a deep-water basin was formed and filled in only in Permian. Water depth estimated from interpretation of sedimentological and paleontological data varies from 1,0 to 3,5 km. According to shape of the tectonic subsidence curve, during Carboniferous water depth was close to 3,5 km.","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85836601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The landscape indication of archaeological sites in the environs of the Ortolyk River (Altai)","authors":"A. Glebova, I. Sergeev","doi":"10.21638/SPBU07.2019.302","DOIUrl":"https://doi.org/10.21638/SPBU07.2019.302","url":null,"abstract":"The paper concentrates on the analysis of the landscape location of archaeological sites in the Ortolyk river valley. The studied region is located in the South-Eastern Altai between Kurai and North-Chuisky ridges, north-west of the Kurai village. The location scheme of archaeological sites and the landscape map were created for the historical archaeological and landscape analysis conducted in the format of ArcGIS 10.1. GIS-cartography archaeological sites in the field was carried out with the help of GPS navigator. During the field study the coordinates of 174 archaeological sites were determined, conceivably 78% of which belong to the Scythian period, 5% to the Turkic period, 17% - dating difficult. The majority of the monuments are stone burial mounds, memorial structures, balbals, etc. The archaeological sites were found at altitudes of 1590 to 1710 meters. Landscape maps are based on the field research, a digital elevation model (DEM), high-resolution satellite images, geomorphological maps (scale 1:200,000) and maps of quaternary sediments (scale 1:200,000) and topographic maps (scale 1:50000). The largest area, 42%, is covered with low gradient slopes (3° to 10°) mountain ranges of southern exposure, composed of ancient lake deposits and diluvial deposits with wormwood-low-bunchgrass steppes, low-bunchgrass steppes, sometimes feather grass-low- bunchgrass-wormwood steppes on the chestnut soil. GIS-cartography of the archaeological sites shows that for their construction ancient people purposefully chose level surfaces or gentle slopes with open dry steppe landscapes (wormwood-low-bunchgrass steppe and low-bunchgrass steppe). These landscapes were good grazing lands in the Scythian and Turkic periods. Now, the local population uses them for grazing of the livestock: cows, horses, sheep, and goats. The visibility of the snowy mountaintops played an important role in the selection of the location for construction sites. In the studied area, the panorama of North-Chuisky ridge with its snow-capped peaks is clearly visible.","PeriodicalId":41676,"journal":{"name":"Vestnik of Saint Petersburg University Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75872285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}