Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Thornton #1
236-242-6
236 - 240-6 Breccia of claystone to buckclay
fragments in SS matrix.
Large solar frogs very siliceous, lapstone
240-6/2 242 somewhat greenish clay
vitreous siliceous? bluegray bands near base
242 to 242-6 Black semibaked clay brownish
stripes & mottles, lower 1/2" bluish &
greenish