Natural analogs. Long-term system analysis

The natural analogs are systems evolving with freedom within the nature during very large periods of time (geological periods) and because of their lithological, structural, geochemical and hydrogeological context present a big similitude with the total or partial performance of some systems suggested as geological deep storage sites for high level radioactive wastes. The knowledge and study of such systems shed light into the performance of waste deposits at long-term scenarios. The different studies about analogs in Canada (Cigar lake) Gabon (Oko), Spain (Berrocal), Finland (Palmottu) are analyzed