Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
7/24/89 879
KRJ: 87147
Hell Creek Fm - Ludlow Mbr FT. Union Fm
level 87147 C
Top of an 8" coal seam
upper 3" becomes sooty
clayey w conifer
sprays replaced w
amber, amber blebs in