State | Vermont |
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Name | Bull Formation - Bomoseen Graywacke member |
Geologic age | Neoproterozoic |
Lithologic constituents |
Major
Sedimentary > Clastic > Sandstone > Graywacke (Bed)Pale-reddish-brown to light-gray-weathering, medium- and fine-grained, massive to thickly bedded, olive-green to gray micaceous quartz-feldspar graywacke and siltstone, locally containing coarse detrital muscovite, biotite, and autoclastic slate chips.
Sedimentary > Clastic > Siltstone (Bed)Pale-reddish-brown to light-gray-weathering, medium- and fine-grained, massive to thickly bedded, olive-green to gray micaceous quartz-feldspar graywacke and siltstone, locally containing coarse detrital muscovite, biotite, and autoclastic slate chips.
Minor
Metamorphic > Metasedimentary > Metaclastic > SlateLocally containing coarse detrital muscovite, biotite, and autoclastic slate chips.
|
Comments | Unit is labeled as CZbb, but only has Neoproterozoic age? Changed symbol to Zbb. |
References | |
NGMDB product | |
Counties | Addison - Bennington - Rutland |