Mineral Composition of Sapropelles of Lakes of the Right Bank of the Ob River (Middle Ob Region)

M P Sartakov,E M Osnitsky,N S Larina,K Iu Kudrin

doi:10.5539/jmbr.v9n1p77

M P Sartakov, E M Osnitsky + Show 2 more

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https://doi.org/10.5539/jmbr.v9n1p77

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Abstract

The objective of this work is to study the mineral composition of bottom sediments of eight small lakes located on the right bank of the Ob River (Western Siberia) in the Surgut region of the Khanty-Mansiysk Autonomous Okrug - Yugra. The studies were carried out using wave dispersive X-ray fluorescence (WDFR) spectroscopy. The content of organic substances, ash, and oxides in the ash in the samples was determined. Based on these data, the studied bottom sediments were classified. The bottom sediments of Lake S-1 are siltstone sands, lakes Vach Lor and S-189 - weakly sapropelic siltstone sands, lakes S-5, S-6, S-3, S-89, and S-294 - typical sapropels. The article presents the content of the main elements in the ash of the studied samples.

Highlights

Sapropels are modern or subfossil, fine-structured, colloidal deposits of continental reservoirs
The objective of this work is to study the mineral composition of bottom sediments of eight small lakes located on the right bank of the Ob River (Western Siberia) in the Surgut region of the Khanty-Mansiysk Autonomous Okrug - Yugra
Their composition includes the remains of microscopic aquatic organisms, a significant amount of organic matter, a certain amount of inorganic components of biogenic origin, as well as mineral impurities of a salutary nature

Summary

Introduction

Sapropels are modern or subfossil, fine-structured, colloidal deposits of continental reservoirs. Their composition includes the remains of microscopic aquatic organisms, a significant amount of organic matter, a certain amount of inorganic components of biogenic origin, as well as mineral impurities of a salutary nature. The primary sources of organic matter are different. Peat is biogenic humic formations, the primary sources of organic matter of which are carbohydrates of peat-forming plants. The primary sources of organic matter are fats and protein substances of sapropel-forming organisms - plankton and algae, which causes a difference in the chemical composition of peat and sapropel. Sapropels are contrasted with high-ash lake deposits - clays, sands, marls, taking 15% of the content of organic matter as a conditional border for this distinction (Aksoy, 2016; Korde, 1960)

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