scholarly journals Volgian–early berriasian marginal filter in the West Siberian marine basin and its influence on sediment distribution

2019 ◽  
pp. 199-210
Author(s):  
A. E. Kontorovich ◽  
L. M. Burshtein ◽  
B. L. Nikitenko ◽  
S. V. Ryzhkova ◽  
E. V. Borisov ◽  
...  
Keyword(s):  
Water Area ◽  
Natural Ecosystem ◽  
Iron Hydroxides ◽  
Marginal Filter ◽  
Living Matter ◽  
The West ◽  
Sediment Distribution ◽  
Late Diagenesis ◽  
Deep Water Part ◽  
Marine Basin

The West Siberian marine basin of the Volgian–initial Berriasian ages is described. It is shown that a marginal filter (according to A. P. Lisitsyn) functioned in the basin. The main mass of terrigenous sediments was deposited within the eastern margin of the sea. The central part of the basin only received a small amount of the terrigenous material. Water area of the West Siberian Sea was 2 mln 530 thou km2; eastern marginal filter, 535 thou km2; and open epicontinental marine basin, 1 mln 994 thou km2. Depth of the Volgian Sea was 500 m. Mass of sediments in the West Siberian Sea by the end of late diagenesis was 228.4 Tt (recalculated to the anhydrous material), with sediments in the eastern marginal filter accounting for 121.7 Tt. Bioproductivity of the Volgian–Berriasian West Siberian Sea was extremely high. The mass of living matter was composed of archaea, bacteria, and protozoan unicellular eucaryotes (organic-walled), as well as organisms with the siliceous (radiolarians) and carbonate skeleton (foraminifers and others). The rock mass formed from sediments of the central deep-water part of the basin at the stage of diagenesis was 106.7 Tt (recalculated to the anhydrous material), including the mass of organic matter (OM) accounting for 15.8 Tt; mineral (siliceous and carbonate) relicts of organisms, 67.8 Tt; and allothigenic components (clay minerals and iron hydroxides), 23.1 Tt. Analysis of the composition of kerogen (polymerlipids) revealed that the amount of OM transported to sediments was 15–20 times higher than the present-day amount in rocks of the Bazhenov Formation. At the stage of early diagenesis, the OM mass in sediments was as high as 235–320 Tt (recalculated to the anhydrous material). The Bazhenov Sea represented a huge natural ecosystem favorable for the generation, reworking, and accumulation of living matter relicts. At the stage of catagenesis, unique oil-andgas resources were generated from OM masses deposited in this system.

Volgian–Early Berriasian Marginal Filter in the West Siberian Marine Basin and Its Influence on Sediment Distribution

2019 ◽  
Vol 54 (3) ◽  
pp. 187-199
Author(s):  
A. E. Kontorovich ◽  
L. M. Burshtein ◽  
B. L. Nikitenko ◽  
S. V. Ryzhkova ◽  
E. V. Borisov ◽  
...  
Keyword(s):  
Marginal Filter ◽  
The West ◽  
Sediment Distribution ◽  
Marine Basin

scholarly journals Surface Water Extraction and Dynamic Analysis of Baiyangdian Lake Based on the Google Earth Engine Platform Using Sentinel-1 for Reporting SDG 6.6.1 Indicators

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 138
Author(s):  
Zijie Jiang ◽  
Weiguo Jiang ◽  
Ziyan Ling ◽  
Xiaoya Wang ◽  
Kaifeng Peng ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Surface Water ◽  
Essential Element ◽  
Water Area ◽  
Google Earth ◽  
Water Extraction ◽  
Natural Ecosystem ◽  
The Sustainable Development ◽  
Baiyangdian Lake ◽  
Google Earth Engine

Surface water is an essential element that supports natural ecosystem health and human life, and its losses or gains are closely related to national or local sustainable development. Monitoring the spatial-temporal changes in surface water can directly support the reporting of progress towards the sustainable development goals (SDGs) outlined by the government, especially for measuring SDG 6.6.1 indicators. In our study, we focused on Baiyangdian Lake, an important lake in North China, and explored its spatiotemporal extent changes from 2014 to 2020. Using long-term Sentinel-1 SAR images and the OTSU algorithm, our study developed an automatic water extraction framework to monitor surface water changes in Baiyangdian Lake at a 10 m resolution from 2014 to 2020 on the Google Earth Engine cloud platform. The results showed that (1) the water extraction accuracy in our study was considered good, showing high consistency with the existing dataset. In addition, it was found that the classification accuracy in spring, summer, and fall was better than that in winter. (2) From 2014 to 2020, the surface water area of Baiyangdian Lake exhibited a slowly rising trend, with an average water area of 97.03 km2. In terms of seasonal variation, the seasonal water area changed significantly. The water areas in spring and winter were larger than those in summer and fall. (3) Spatially, most of the water was distributed in the eastern part of Baiyangdian Lake, which accounted for roughly 57% of the total water area. The permanent water area, temporary water area, and non-water area covered 49.69 km2, 97.77 km2, and 171.55 km2, respectively. Our study monitored changes in the spatial extent of the surface water of Baiyangdian Lake, provides useful information for the sustainable development of the Xiong’an New Area and directly reports the status of SDG 6.6.1 indicators over time.

scholarly journals Aluminium in Groundwater Possible Solution Equilibria

1981 ◽  
Vol 12 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Erik Eriksson
Keyword(s):  
Present State ◽  
West Coast ◽  
Soil Profile ◽  
Acid Precipitation ◽  
Iron Hydroxides ◽  
The West ◽  
Solution Equilibria ◽  
The Future ◽  
High Concentrations ◽  
Coast Region

Recent investigations in the west coast region of Sweden has revealed the occurrence of groundwaters with a pH of around 4 and, further, alarmingly high concentrations of soluble aluminium. The reason for the occurrence of acid groundwater is, of course, the acid precipitation falling over this area of Sweden in combination with coarse soils on resistant types of granites and gneisses. The »resistance« against acidification of groundwater offered in the soil profile by aluminium and iron hydroxides must obviously have been partly broken. It seems therefore relevant to examine the solubility conditions of aluminium compounds in soils and rocks. From this we may reconstruct the process which led to the present state and we may also be able to tell what information on soils is needed in order to predict the future acidification of groundwater.

The tectonic differences between the east and the west in the deep-water area of the northern South China Sea

2016 ◽  
Vol 35 (1) ◽  
pp. 86-95 ◽  
Author(s):  
Zhongyu Xia ◽  
Zhifeng Wan ◽  
Xianqing Wang ◽  
Qiuhua Shi ◽  
Song Cai ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Deep Water ◽  
Northern South China Sea ◽  
Water Area ◽  
The West ◽  
China Sea ◽  
Deep Water Area

Models of the REE distribution in the black shale Bazhenov Formation of the West Siberian marine basin, Russia

Geochemistry ◽  
2010 ◽  
Vol 70 (4) ◽  
pp. 363-376 ◽  
Author(s):  
Yuri N. Zanin ◽  
Vika G. Eder ◽  
Al’bina G. Zamirailova ◽  
Vladimir O. Krasavchikov
Keyword(s):  
Black Shale ◽  
The West ◽  
Bazhenov Formation ◽  
Ree Distribution ◽  
Marine Basin

Relevance of adaptive landscape reclamation of the lands of the Baraba Plain according to I.I. Zhilinsky

2020 ◽  
pp. 13-17
Author(s):  
Mihail Glistin ◽  
Mihail Ustinov
Keyword(s):  
Characteristic Feature ◽  
Water Content ◽  
Global Scale ◽  
Water Area ◽  
Adaptive Landscape ◽  
The West ◽  
Research Methodologies ◽  
South Eastern ◽  
The Past ◽  
Wide Range

Taking into account modern research methodologies and design of reclamation systems, the experience of the expedition of I.I. Zhilinsky «on the development of the Barabinsk lowland» is considered, which in its organization, efficiency of work, taking into account the natural reclamation features of the reclaimed territory, proved the relevance of adaptive landscape reclamation of the lands of the Barabinsk plain. The Barabinsk plain (Baraba), located in the South-Eastern part of the West Siberian lowland in the interfluve of the Ob and Irtysh, occupies a huge area of 114 thousand km2. In the past, this is a single water area, in the present-a scattering of lakes, swamps and manes. A characteristic feature of Baraba is the General flatness, very weak drainage of the area and its pulsating cyclical aridization and water content. By its nature, Baraba is a unique biosphere territory not only in Russia, but also on a global scale, with a wide range of ecosystems.

Deep-water part of the Middle Caspian Sea as a promising area of operation of the Caspian sprats

Fisheries ◽  
2021 ◽  
Vol 2021 (4) ◽  
pp. 48-52
Author(s):  
Tatiana Pomogaeva
Keyword(s):  
Spatial Distribution ◽  
Deep Water ◽  
Caspian Sea ◽  
Water Area ◽  
Summer Period ◽  
Promising Area ◽  
Deep Water Part

The article presents the results of hydroacoustic studies of the deep-water part of the Middle Caspian Sea in the summer period 2019-2020. The spatial distribution in the studied water area and the ratio of biomass in the upper 50-meter layer are presented. Shows typical of echogram the records of sprats.

Sediment Distribution in Christchurch Bay, S. England

1970 ◽  
Vol 50 (3) ◽  
pp. 673-682 ◽  
Author(s):  
K. R. Dyer
Keyword(s):  
Tidal Channel ◽  
The South ◽  
The West ◽  
Sediment Distribution ◽  
Isle Of Wight ◽  
South West ◽  
Cemented Sands ◽  
Flood Current ◽  
Sand And Gravel ◽  
Flandrian Transgression

The area of Christchurch and Poole Bays has been cut by the sea in the period since the breaching of the Chalk ridge between the Isles of Wight and Purbeck late in the Flandrian transgression. Erosion of the soft Tertiary rocks must have been fast and is still active. In the Barton area the cliffs have been receding at about 1 m/year since 1895 (May, unpublished). There the cliffs are composed of badly cemented sands and sandy clays, capped with plateau gravels about 3 m thick, and erosion of them has released large quantities of sand and gravel, sufficient to maintain features such as Hurst Spit. This Spit approaches within 1.3 km of the Isle of Wight, but is separated from it by the tidal channel of the West Solent, in this area up to 60 m deep. In these narrows the south west flowing ebb current reaches 2.25 m/sec, whereas the flood current only reaches 2 m/sec.

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