Some features of this website rely on connection markers called "cookies". You can give or withdraw your consent for these cookies to be placed on your computer, mobile or tablet, at any time, globally or purpose by purpose.

Cookies that are essential to the functioning of the site

Some cookies are essential to the proper functioning of the site. These include load balancing cookies and cookies that remember your acceptance or refusal of the use of third-party cookies.

These cookies do not require prior consent and cannot be deactivated.

Audience measurement cookies

The audience measurement services used to generate useful statistics attendance to improve the site.

The data collected (geographic area, pages visited, time spent, etc.) is recorded and kept on BRGM's servers for a maximum period of thirteen (13) months. This information is strictly anonymous and does not enable users to be identified or to monitor their browsing of other sites. The information collected is only used to analyse BRGM site visitor use.

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Third-party cookies

Other cookies are used to allow you to view content hosted by third parties directly on our site.

You have the possibility to accept or oppose the deposit of cookies, via the cookie management panel accessible via the banner displayed when you arrive on the site, or at any time by clicking here.