The lithological and petrographic characterization and genesis of rocks in the Utkholok suite of well X of the Kshukskoye field

Abstract

The study of the core material from well X in the Kshukskoye field is a crucial stage for accumulating data and extending our knowledge of the structure and composition of volcanic-sedimentary rocks in the Kamchatka Peninsula and adjacent territories. Due to the challenging characteristics of the rocks caused by high tectonic activity, the absence of reference horizons,ambiguous stratigraphic correlation, and the low knowledge of deposit parameters in the cross-section of the Kamchatka Peninsula fields, a comprehensive lithological and mineralogical study was conducted on all collected cores from well X in the Kshukskoye field. Taking into account the limited knowledge and ongoing disputes about the rock nomination accuracy, special attention was devoted to the deposits of the Utkholok suite of the Khattsk stage, the Upper subseries of the Oligocene series of the Paleogene system.The results obtained provide confirmation of the genesis of the rocks of the Utkholok suite. In accordance with the results of lithological and mineralogical studies of the core, the correct naming of the studied rocks is justified.