Roques sedimentàries d'origen orgànic
Trípoli
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Trípoli
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Creta
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Creta
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Asfalt
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Torba
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Antracita
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Antracita
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Hulla
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Hulla
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Lignit
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010
Lignit
(c) Jordi Coll Vera - 2010
(c) Jordi Coll Vera - 2010