The geological structure of the Berkha Island is a high-level biogenic buildup – a reef massif. It is a paragenetic facies combination including a reef plateau, a reef core, a buttress, a forereef and pinnacles. The development of this reef massif continued for about 30 Ma. The reef growth started in the Late Visean with formation of mud bank and vanished in the Late Bashkirian with formation of solitary tower-shaped pinnacles. Geochemical methods showed high purity of reef carbonates and proved the existence of subaerial exposures during the formations of the reef massif. According to the petrochemical module analyses, enables to suggest progressive climate aridization with time, confirmed by geological data: there is a coeval anhydrite strata to the south of Berkha Island. The combination of positive lithological, structural and paleoclimate factors raises the evaluation of the hydrocarbon potential of the area; moreover, the presence of solid bitumen has been reported from forereef facies of Berkha Island.

Berkha岛的地质结构是高水平的生物成因聚集体–礁石地块。它是一种共生相相组合，包括一个礁高原，一个礁岩心，一个支撑，一个前足和顶峰。该礁地块的发育持续了约30 Ma。珊瑚礁的生长开始于后期的Visean，形成了泥滩，而之后的Bashkirian则由于形成了单独的塔形尖峰而消失了。地球化学方法显示出高纯度的礁碳酸盐，并证明了礁块形成期间存在地下暴露。根据石化模块的分析，可以暗示随着时间的推移逐步进行气候干旱化，这一点已得到地质数据的证实：在Berkha岛的南部有一个中世纪的硬石膏层。结合正岩性，结构和古气候因素提高了对该地区油气潜力的评价；此外，从伯克岛前缘相中已经发现存在固体沥青。