Plio–Quaternary Geometry and Kinematics of Ptolemais Basin (Northern Greece): Implications for the Intra-Plate Tectonics in Western Macedonia

An integrated structural study of the Ptolemais basin of Northern Greece allows assessment of deformation processes and their implicationin the Pliocene–Quaternary structural evolution of this part of Western Macedonia. Normal and reverse faults within Plio–Quaternarysediments, NE–SW striking anticlines in both Plio–Quaternary sediments and pre-Tertiary basement-units, torsions and deformationpartitioning, highlight the particular characteristics of intra-plate deformation. Field investigations and drilling data infer the conclusion that intra-plate processes were governed by progressive shear strain during the Plio–Quaternary. A new kinematic model for the developmentof the Ptolemais basin is proposed, showing the importance of progressive shear strain.