We welcome the discussion by Elena Druguet, Jordi Carreras and Jochen Mezger (Druguet et al. 2017) of our paper (Vissers et al. 2017b) in which we report Jurassic 40Ar/39Ar ages from shear zones at Cap de Creus, NW Spain. The authors argue that our interpretation of these results and the inferred development of the Cap de Creus shear zones during Jurassic stretching and opening of the Piemonte Ligurian ocean contradicts structural and tectonic evidence, and that it is not sufficiently supported by geochronological data. Below we first consider their structural and tectonic arguments from the tectonic–palaeogeographical scale down to the smaller field scale, and then proceed to discuss our Ar/Ar results.

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