Distribution of the C/S Ratio in the Bazhenov Formation in Western Siberia and the Possibility of Its Use to Clarify the Genesis of Black Shales
Abstract
The work is devoted to the study of distribution patterns of the organic carbon/sulfide sulfur ratio (C/S) in Upper Jurassic–Lower Cretaceous Black Shale Bazhenov Formation in Western Siberia. Possibilities of using this indicator to clarify the genesis of black shales are considered. It was revealed for the first time that rocks subjected to silicification in diagenesis are characterized by increased C/S values (5 ± 1), while a significant linear C/S relationship, characteristic of normal marine sediments, is retained. It has been confirmed that the catagenetic pyritization, transformation, and thermal degradation of organic matter reduce this indicator (often
Fields of Study & Subjects
Hydrocarbon exploration and reservoir analysis
Paleontology and Stratigraphy of Fossils
Geochemistry and Elemental Analysis
Publication details
- Journal / source
- Lithology and Mineral Resources
- Volume
- 61
- Issue
- 2
- Pages
- 177–194
- Publication date
- 16 March 2026
- Language
- EN