Articles | Volume 15, issue 1
Research article
02 Feb 2024
Research article |  | 02 Feb 2024

Fold localization at pre-existing normal faults: field observations and analogue modelling of the Achental structure, Northern Calcareous Alps, Austria

Willemijn Sarah Maria Theresia van Kooten, Hugo Ortner, Ernst Willingshofer, Dimitrios Sokoutis, Alfred Gruber, and Thomas Sausgruber


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Short summary
Extensional deformation creates structures that may be reactivated during subsequent shortening. The Achental structure within the Northern Calcareous Alps fold-and-thrust belt is a natural example of a basin margin that was inverted during Alpine orogeny. We have studied the influence of such inherited inhomogeneities in the field and as an analogue model. We find that oblique shortening can create structures outlining pre-existing faults within a single deformation event.