Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Hole 41 (cont.)
12" Dark gray to gray flinty
blocks, scattered fine
modules. (coaly streak
4" to 5")
10" Gray block, modules in
upper 2"
55" (33" actual recovery)
Gray sideritic block,
heavy concentration
of siderite in basal
6", may be silty in
upper 8"
68'5" 69'11" 1'6" Shaley block clay, sideritic
becoming softer in lower
9"
69'11" 73' 3'1" Gray to dark gray
sideritic shale, hard
locally silty.
73' 74'2" 1'2" Red clayey shale, locally
hard, silty & sideritic,
mirror gray streaks.