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Download Options
| Image Name | Width x Height | Size | 
|---|---|---|
| SIA3805.jpg | 640 x 445 | 122K | 
| SIA3805.jpg | 1200 x 835 | 372K | 
| SIA3805.jpg | 3828 x 2664 | 2M | 
Caption
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.