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WEATHER
Metamorphic rocks. (IDXAm;0)
Geologic Formation
in
ID
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MT
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Lithology
Granite
Quartzite
Marble
Other
(1,379 mi²)
Geologic Age
Neoarchean – Siderian (2670 Ma – 2450 Ma ago)
Geologic Unit Label
XAm
Pend Oreille granodiorite gneiss near Priest River (~2650 Ma); schist, gneiss, and subordinate quartzite along North Fork Clearwater River; Kelly Creek granite gneiss northeast of Pierce (~2670 Ma); orthogneiss in Pioneer Mountains (~2600 Ma and 695 Ma); granite gneiss, granite, schist, and amphibolite of Green Creek complex in Albion Mountains (~2600 Ma); granite gneiss in Beaverhead Mountains east of Leadore (~2450 Ma); and marble, quartzite, schist, and amphibolite of uncertain age near Henrys Lake. (Mesoproterozoic to Archean Basement Rocks).
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Geologic Formation
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