2 Résultats trouvés pour "Fichier:Geological_time_spiral_-_sharper.png".

Fichier:Geological time spiral - sharper.png

[[:File:Geological time spiral.png]], for improved legibility |Source=Graham, Joseph, Newman, William, and Stacy, John, 2008, The geologic time spiral—A path...


Fichier:Geological time spiral.png

2007-3015 at http://pubs.usgs.gov/fs/2007/3015/ for ages of geologic time periods. Ages in the spiral have been rounded from the age estimates in the Fact Sheet...