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Title: Thrust and strike-slip fault control, in the late Eocene to Miocene, of Pindos foreland basin evolution: SE Aitoloakarnania area, western Greece.

Authors:
Vasiliki Zygouri1, Angelos Maravelis2, Elena Zoumpouli1, Chrysanthos Botziolis1, Avraam Zelilidis1

Institutions:
1Department of Geology, University of Patras, Rion 26504, Greece; 2Department of Geology, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece

Event: GeoKarlsruhe 2021

Date: 2021

DOI: 10.48380/dggv-1xp3-kw25

Summary:
Evolutionary stages, from late Eocene to Miocene, of Pindos foreland, mark the transition from Pindos oceanic basin, in the east, to Gavrovo carbonate platform sedimentation in the west. Pindos Thrust as a crustal-scale structural element resulted in the formation of the Pindos foreland. Current research, which is based on detailed field campaign and on cross-sections, correlates and interprets the tectonic evolution of the area. The study area is part of the external Hellenides and belongs to the eastern Pindos foreland (SE Aitoloakarnania region). Pindos foreland consists of a syn-orogenic sedimentary succession with thick clastic deposits where compressional deformation acted synchronously to sedimentation. The activation of NNW elongated Gavrovo and Ionian Thrusts modified and controlled the syn-orogenic evolution of the area. In particular, the study area is characterized by the formation of fault-related fold structures of Gavrovo Thrust, such as the Varasova and Klokova anticlines and the Vassiliki syncline. Westwards propagating thrusting deformation has been partitioned by dextral strike-slip faults like Evinos Fault. This dextral strike-slip fault acts as a pathway to Evinos River flow. Finally, the syn- to late-orogenic evolution of the area is modified by normal faulting, forming the current geotectonic framework of the area.

Acknowledgments

This work was funded by the H.F.R.I. (Hellenic Foundation for Research and Innovation) and GSRI (General Secretarial for Research and Innovation) through the research project "Global climate and sea-level changes across the Latest Eocene-Early Oligocene, as reflected in the sedimentary record of Pindos foreland and Thrace basin, Greece, 80591".

(Poster)



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