CHEMICAL COMPOSITION OF THE SMALL WATERCOURSES OF THE KUGDA MASSIF AND ITS MARGIN (EASTERN SIBERIA)
Relevance. The extensive development of the Arctic territories and global climate change issues have attracted Geosciences researchers’ attention to exploring the environmental characteristics of the Russian Arctic and subarctic territories over the past few decades. The outcrops of intrusive massif...
| Published in: | Bulletin of the Tomsk Polytechnic University Geo Assets Engineering |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2022
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| Subjects: | |
| Online Access: | https://doi.org/10.18799/24131830/2022/3/3469 https://doaj.org/article/cba19b4db5b2448a982b2a3a559fba3d |
| Summary: | Relevance. The extensive development of the Arctic territories and global climate change issues have attracted Geosciences researchers’ attention to exploring the environmental characteristics of the Russian Arctic and subarctic territories over the past few decades. The outcrops of intrusive massifs in the northern part of Eastern Siberia are of interest due to the prospects for mineral deposits. At the same time, the terrestrial water systems of this region remain poorly studied. Inaccessible location and a virtual absence of infrastructure is the main account. Research of the water chemistry of intrusive massifs is challenging for explaining their formation mechanisms in the Arctic territories and improving hydrogeochemical exploration methods. The aim and object. The research object is the small watercourses draining the Kugda ultramafic alkaline intrusive massif and its carbonate margin located in the western part of the Anabar Plateau. The study aims to investigate the water chemistry and carry out a comparative analysis with the large rivers of the region as well as reveal the consistencies of the chemical composition formation. Methods. During the fieldwork in July–August 2020, three samples from small watercourses draining ultramafic alkaline massif and its carbonate margin were taken. The carbonate system components were determined by potentiometric titration. The anionic composition was determined by ion chromatography. Dissolved organic carbon was measured by the high-temperature catalytic oxidation method. Elemental analysis of water was carried out by ICP-AES and ICP-MS methods. Samples for elemental analysis were filtered through a polyethersulfone membrane of 0,45 µm mesh into analytical pure 15 mL tubes with 0,45 mL of high purity HNO3 for conservation. Results and conclusions. The cationic content of the studied waters of the ultramafic alkaline massif and its margin reflects the rock composition adequately. At the same time, their anionic composition is controlled by a complex set of factors, ... |
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