Thrust fault-related folds form important structural hydrocarbon traps in fold-and-thrust belts. This contribution presents the analysis and understanding of thrust-related folding within a thrust belt that suffered an extensional fault heritage by examining surface and subsurface examples from the Apennines thrust belt of Italy. The geometrical characterisation of the fold structures has been carried out by integrating field geological and structural data with the interpretation of seismic reflection profiles. The development of thrust-related folding models is discussed with respect to mechanical multilayers and the reactivation or thrust shortcut of a pre-existing normal fault. Fault-bend and positive flower structures or fault-propagation folds are developed respectively along oblique and frontal thrust ramps that characterise a curved thrust belt depending on the dominant positive inversion tectonic process and the mechanical stratigraphy of the involved multilayer.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error