Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Hole 26
0-18 overburden
18-5 ironstone
24-4 gray iron-stained siltstone, splits in
horizontal layers. A 4" ironstone in middle
of unit.
25-4 fine-grained sandstone with thin gray
streaks throughout.
26-9 gray iron-stained siltstone, splitting
fairly easily. Interbedded with sandstone in
upper portion. shaly
30-1 dark gray to black siltstone; iron-stained.
38-7 dark gray to black shale with more or
less fossililty.
40-7 dark brownish-black to black claystone. Breaks
into angular pieces rather easily. Thin
streaks of hard black shale within unit.
41-3 ironstone
55-3 dark gray to black "bastard" clay with inter-
bedded black shale horizons.
56-1 limestone with a thin streak of gray
claystone.
56-8 black carbonaceous claystone
57-1 COAL
57-9 black carbonaceous shaly claystone to shale
59-11 limestone somewhat carbonaceous at top.
61-1 calcareous claystone
64 light gray siltstone with limy stringers
69-4 light gray shaley siltstone with very stains
71-5 dark gray to black shaley siltstone with
sandy streaks. Iron stained.
72-9 black carbonaceous siltstone with shaly
partings and nests of pyrite.
78-9 limestone. Quite hard.
82-7 slightly silty gray claystone with num-
erous large inclusions of limestone
86-5 dark gray easily broken claystone with
black horizons throughout.