Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
AIN-51-28
1. base of Lytle - chart conglomerate with medium
grained white weathering ss. above - base not
exposed
2. Main clay bed - too iron to be mined
lower split mined however
3. disconformity - entrance of mine shaft. (Shaft
good for section) sandstone on sand (friable)
4. second shale (?) mined - 2" flinty bed at top, benderite (?)