SEDIS - Thesaurus
Aldridge Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Mesoproterozoic | |
| ....Aldridge Formation | |
| RT | Idaho |
| Montana | |
| Washington | |
| British Columbia | |
| Belt Supergroup | |
| SN | In Belt Supergroup. Added to Thesaurus in 1989. |
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