Distribution pattern of Miocene-Pliocene deposits in the Northern Absheron structures

North Absheron region is a geologically rich and complex zone.In this area, sediments from the Miocene and Pliocene periods are widely distributed.During the Miocene period, marine conditions predominated, while in the Pliocene period, tectonic activity and erosion processes led to the formation of mixed marine-terrestrial sediments.Key oil and gas fields in the region, such as the Absheron Bank and the Hamdam-Garabagh provide important insights into the distribution and development of Miocene and Pliocene sediments.Research conducted in these fields shows that the distribution of sediments is closely linked to tectonic uplifts and subsidence, as well as changes in sea level.Miocene sediments are primarily of marine origin consisting of clay and sandy layers, while Pliocene sediments are of mixed marine and terrestrial origin.The spatial and lithological differentiation of Miocene-Pliocene sediments in the Northern Absheron reflects the region's dynamic tectonic evolution.Miocene deposits are predominantly marine and were formed under relatively stable subsidence conditions, whereas the Pliocene sediments record the increased tectonic activity and erosional input from continental sources.Structural highs and synclines played a fundamental role in controlling sediment accumulation and preservation.Paleogeographic models demonstrate a shift from open marine to more restricted, deltaic and fluvial environments from the Miocene into the Pliocene.Facies analysis confirms the existence of porous sandstone reservoirs interbedded with clay-rich sealing units.These geological features enhance the hydrocarbon potential of the Miocene-Pliocene succession.