Trichonis basin, western central Greece: Is it an immature basin in the Corinth Rift or a pull-apart in a sinistral rift-trench link?

The 35-km–long E-W trending Trichonis basin in western central Greece is located between the Kephalonia Transform Fault (KTF), and the E-W trending Corinth Rift exhibiting analogous, but of smaller-scale morphotectonic features to the Corinth Rift. The final cooling and exhumation of the area started since ∼10 Ma, after the burial due to the emplacement of the Pindos thrust (∼30-20 Ma). The deformation includes (a) an Early-Middle Miocene transpression (T1) during the waning stage of collision between the Apulia and Eurasia, (b) a Late Miocene-Pliocene radial extension (T2), which relates to the separation of the Hellenic subduction zone from the Apulia (Adria)-Eurasia collision plate boundary through the KTF. Two extensional stress tensors, T3 and T4, with σ3 in NNE (023°), and NNW (157°) directions, respectively, describe the modern stress regime in the Trichonis basin. This spatial stress partitioning is due to competition between back-arc stresses associated with Hellenic subduction zone retreat, and stresses of the post-collisional collapse of the Hellenic orogen. The Trichonis basin is not a pull-apart basin in a sinistral rift-trench link, but an immature basin to the Corinth Rift along the Trichonis Fault, which stands as a right-stepping fault branch to the main faults of the Corinth Rift.