has been obtained from freely accessible Internet sites, where they can
be consulted and downloaded.
The organizations/companies that own the copyright on these data have
imposed certain conditions as to the data use, especially in a context other than one of
personal use. BRGM is very aware of intellectual copyright associated with the data to
which it has access but not ownership, and has taken every precaution to respect these
It is to be noted, in this context, that:
the accessed data used in the GIS Andes generally represent only a part of the original databases;
certain data have been reformatted:
cut into blocks for easier use (GTOPO30);
interpolated to provide raster images (GTOPO30);
completed (Holocene Volcanism);
sorted and re-assessed (Heat Flow).
other data have been used only for making raster images (Global Topo 2min) or for calculations (e.g. ETOPO5 for the topographic corrections when calculating the Bouguer anomaly).
The Internet addresses of the data sites concerned are listed below: