The Buzet Thrust Fault in Istria and overturned carbonate megabeds in the Eocene flysch of the Dragonja Valley (Slovenia)

Abstract

Detailed geological mapping undertaken in the framework of monitoring of the motorway construction works in SW Slovenia has revealed the existence of a large-scale thrust fault between Buzet and Koper (termed the Buzet Thrust Fault) and extensive thrust-related fold structure which is clearly expressed by overturned carbonate megabeds in the thrust footwall in the eastern part of the Dragonja River basin. The Buzet Thrust Fault represents the southeastern margin of the structurally complex Kras Thrust Edge.