State | Vermont |
---|---|
Name | Cram Hill Formation - felsic and intermediate metavolcanic member |
Geologic age | Middle? and Early Ordovician |
Lithologic constituents | Major
Metamorphic > Metaigneous > Metavolcanic > MetaandesiteOccurs at different stratigraphic levels. Includes dark-gray and white layered metadacite and meta-andesite, gray- to tan-weathering blue-quartz phenocrystic metadacitic agglomerate, and grayish-green fragmental metadacitic and meta-andesite breccia.
Metamorphic > Metaigneous > Metavolcanic > MetadaciteOccurs at different stratigraphic levels. Includes dark-gray and white layered metadacite and meta-andesite, gray- to tan-weathering blue-quartz phenocrystic metadacitic agglomerate, and grayish-green fragmental metadacitic and meta-andesite breccia.
|
References | |
NGMDB product | |
Counties | Orange - Orleans - Washington - Windham - Windsor |