Littleton Formation - metarhyolite

White-weathering, medium- to dark-gray, foliated and laminated, aphanitic to very fine grained granofels to schist or metatuff, welded tuff, and lithic tuff commonly with a few percent millimeter-size quartz and microcline phenocrysts. U-Pb zircon age of 407.5±3.9 Ma, no. 44 (Rankin and Tucker, 2000). Stratified rocks of the Bronson Hill arch and Sawyer Mountain belt.
State Vermont
Name Littleton Formation - metarhyolite
Geologic age Lower Devonian
Lithologic constituents
Major
Metamorphic > Granoblastic > GranofelsWhite-weathering, medium- to dark-gray, foliated and laminated, aphanitic to very fine grained granofels to schist.
Metamorphic > Metaigneous > MetavolcanicMetatuff, welded tuff, and lithic tuff commonly with a few percent millimeter-size quartz and microcline phenocrysts.
Metamorphic > SchistWhite-weathering, medium- to dark-gray, foliated and laminated, aphanitic to very fine grained granofels to schist.
References
NGMDB product
Counties Orange