Abstract

The results of gas-geochemical studies of the Chaun Depression and the Ayon sedimentary basin of the East Siberian Sea are presented. The natural gas composition in rocks, gas manifestations, and bottom sediments is determined. The indicators of the molecular mass of hydrocarbon fractions and weight concentrations of individual hydrocarbons, in which ratios are of correlation-genetic significance for hydrocarbon gases of the geological formations, are identified. The geochemical classification of hydrocarbon gases from bottom sediments and a schematic map of gas geochemical zoning of the study area are presented. The oil and gas potential of the Chaun Depression and the Ayon sedimentary basin is evaluated.

中文翻译：

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东西伯利亚海Chaun凹陷和Ayon沉积盆地烃类气体的地球化学和成因

摘要

提出了东西伯利亚海Chaun凹陷和Ayon沉积盆地的天然气地球化学研究结果。确定岩石，天然气表现和底部沉积物中的天然气成分。确定了烃馏分的分子量和各个烃的重量浓度的指标，其中所述比率对于地质层的烃气具有相关遗传意义。给出了来自底部沉积物的烃类气体的地球化学分类以及研究区域的天然气地球化学分区示意图。对Chaun凹陷和Ayon沉积盆地的油气潜力进行了评估。