Lithological characteristics of the modern sediments of the Pechora Sea
Journal Title: Вестник МГТУ - Year 2019, Vol 22, Issue 1
Abstract
The Pechora Sea is of great economic importance for the Russian Federation. Knowledge of the history of the shelf of the Russian Western Arctic seas is impossible without studying the modern processes of sedimentation and lithological structure of the sections. Therefore, the spatial distribution and variety of types of bottom sediments was studied by direct methods of geological testing in August – September 2018 during the 38 route of the research vessel "Academician Nikolai Strakhov". The link of lithological types of bottom sediments to the forms of bottom topography of different origin was established. The characteristics of the late Quaternary sedimentary cover in the Pechora Sea were revealed. The sampling of bottom sediments of the Pechora Sea was carried out using a dredger and a shock ground tube. The sampling points were selected based on the materials of continuous seismic profiling and bathymetric bottom survey. As a result of the study, the following types of bottom sediments were identified: pelitic mud, aleurite-pelitic mud, clay, silt, sand, moraine deposits. The lithological characteristic of various types of the Pechora Sea modern sediments has been presented in the paper. It has been shown that in the most shallow water – the southern and central part of the Pechora Basin – psammitic facies dominate. This is connected with the intensive flow of sandy-silt material from the continent due to river runoff. In the northern – the deepest part of the Pechora basin – thin sediments (pelitic and aleurite-pelitic silts) are mainly distributed. The presence of moraine deposits in the southeastern part of the Pechora Sea suggests that there was a glacier here during the Late Valdaian, while the rest of the Pechora Basin was a lowland with a cryoarid subaerial landscape.
Authors and Affiliations
A. S Ulyantsev, I. V. Chickiryov, S. L. Nikiforov, N. O. Sorokhtin, А. А. Melousov, R. A. Ananiev, N. N. Dmitrevsky, N. V. Libina
Keywords
Related Articles
- EP ID EP520454
- DOI 10.21443/1560-9278-2019-22-1-199-206
- Views 121
- Downloads 0
The fractionation of 13С in the Тransbaikalia ecosystem
The analysis of isotopes of the main biogenic elements is carried out in determining the geographical origin of the sources of raw materials used for the manufacture of food products, as well as the authenticity of its o...
Saccular cells in the epidermis of Atlantic cod Gadus morhua L.N.
Infectious diseases are one of the main factors having a negative influence on the Atlantic cod aquaculture. Fish epidermis is a barrier which provides primary interaction between the host and pathogenic organisms. The s...
A pulse generator with inductive energy storage for measuring the grounding resistance of transmission line towers
The pulse method may be used to measure the footing resistance of transmission towers with overhead grounding wires. Measuring systems that obtain the time dependent transient impedance may be used to measure the low-fre...
Abundance of phytoplankton communities of the Barents Sea in the first half of the growing season of 2013
Information on the abundance and biomass of phytoplankton communities of the Barents Sea in the summer of 2013 has been considered. Sampling has been carried out on board the research vessel "Professor Molchanov" in the...
The first find of diamond on the Sredny and Rybachy Peninsulas in the north-eastern Baltic Shield
The regular features of the region's spatial-temporal evolution have been discussed. Based on geodynamic analysis and the time scale of the crust formation in the eastern Baltic Shield, it is defined, that the most promi...