Discussion on "Geological map of the partially dolomitized Jurassic succession exposed in the central sector of the Montagna dei Fiori Anticline, Central Apennines, Italy" by G. Storti, F. Balsamo, A. Koopman (2017)

In their paper on the Montagna dei Fiori area, storti et alii (2017) present a new geological map and discuss the dolomitization pattern and the Jurassic extensional archi- tecture of this sector of the Central Apennines. They con- clude that their “field evidence does not support the gravity- driven olistolith hypothesis proposed by Di Francesco et alii (2010)”, which had already been considered “definitively to discard” by storti et alii (2016). As proponents of such “olistolith hypothesis”, we argue in this Discussion that the paper by storti et alii (2017) does not provide any compel- ling evidence for a rejection of our original hypothesis. Besides a simplified geological map of the Salinello Valley, Di Francesco et alii (2010) also presented a sketch map of a larger area, in order to include the four major outcrops of Calcare Massiccio Fm. that constituted the stratigraphic focus of their work, and which were inter- preted as exotic blocks. In that map, and following Mattei (1987), the Monte Foltrone area was misrepresented as be- ing mostly occupied by the Corniola Fm., which storti et alii (2017) partly amended. That particular area was not discussed in Di Francesco et alii (2010), nor will be here. We acknowledge this improvement over the pre-existing literature, and we stand corrected, although our unpub- lished map of the Monte Foltrone area is still different. It will become apparent to the reader, however, that this has little bearing on this Discussion.