Adana-Sivas

Commentary

The ASVB remains underexplored, particularly offshore, and renewed interest in the eastern Mediterranean has raised its profile. A stable upstream regime and TPAO's success at Sakarya and Gabar are supportive, but activity in the basin itself remains limited. Outlook: Neutral.

Updated

October 12, 2026

Location

Description

The Adana-Sivas province combines two separate Tertiary basins in Turkey. The Sivas Basin is an elongate Eocene–Miocene foreland and sag basin above the Tauride–Pontide suture, in the collision zone between the Pontides (southern Eurasia) and Anatolia. It sits on ophiolites obducted in the Campanian from the Tethys and the Inner Tauride Ocean, and on the Central Anatolian Complex, which was exhumed in the Maastrichtian and thrust onto the obducted series. Thick Late Eocene evaporites in the Sivas Basin fed intense Oligo-Miocene salt tectonics and minibasin development. The Adana Basin is a Neogene basin on the southern flank of the Taurus Mountains, bounded by the Misis–Andirin and Ecemiş fault zones and opening south into the Cilicia Basin. There, Burdigalian–Serravallian sandstones and limestones sealed by Late Tortonian–Messinian evaporites and shales form the reservoir–seal pairs, charged mainly from Palaeozoic sources in the underlying Tauride units, since the Miocene shales are largely immature.

Summary

The ASVB can be considered to be underexplored, especially offshore. More recently, however, the renewed impetus for eastern Mediterranean acreage has piqued interest.