SEDIS - Thesaurus
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Saint Regis Form
Saint Regis Formation
BT
Chronostratigraphic Units
.
Precambrian
..
Proterozoic
...
Mesoproterozoic
....
Saint Regis Formation
RT
Idaho
Montana
Washington
Belt Supergroup
Ravalli Group
SN
In Ravalli Group of Belt Supergroup. NE Idaho, NW Montana and Washington. Added to Thesaurus in 1989.
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