Open Access

Fig. 7


Download original image

Daubrée (Daubrée, 1880) data of fracture orientations in various formations in and close to Paris city in disused quarries. Location of the various measurement sites is given in the original paper available at Magnetic field variations since the initial measurements were corrected. Although slightly dispersed, the full set of data (bottom rose diagram) indicates results similar to our new data with two main joint directions. The joint network we evidence in this study is thus not restricted to the Fontainebleau quartzite but also affect older formations of the centre of the Paris Basin. Time scale after Cohen et al. (2016).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.