|Image Name||Width x Height||Size|
|SIA3805.jpg||640 x 445||122K|
|SIA3805.jpg||1200 x 835||372K|
|SIA3805.jpg||3828 x 2664||2M|
This road cut has exposed ash beds displaying various polygon forms and rust colored bands having a bull's-eye appearance. The rust color is from iron oxide that has seeped into the ash through fractures. This concentric color ring effect is called diffusion bands.