Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Hole #20 CB
19 - 0 Surficial material.
79 - 9 Medium grained sandstone.
85 - 3 Grey silty claystone, siderite nodules up to 6".
93 - 4 Interbedded siltstone and fine grained sandstone.
97 - 0 Coarse grained stylitic sandstone.
111 - 4 Dark grey silty claystone. Plant fossils.
122 - 0 Interbedded siltstone, silty claystone and fine grained sandstone.
125 - 10 Olive gracing to black shaly claystone.
128 - 0 Coal
134 - 4 Black silty claystone grading to light grey siltstone.
153 - 0 Interbedded siltstone and fine grained sandstone.
169 - 11 Medium grained stylitic sandstone.
176 - 3 Interbedded siltstone and fine grained sandstone.
177 - 10 Black claystone, Plant fossils
178 - 10 Coal
181 - 7 Black silty claystone Plant rootlets
183 - 3 Coal
190 - 0 Tan claystone and silty semi-plastic clay
191 - 4 Light and dark tan fragmental semi-plastic clay. Siderite pellets in lower 6' (incl 1/2')
sem(THN)
194 - 4 Tan claystone and silty semi-plastic clay.
194 - 9 Fragmental tan plastic and semi-clint clay.
209 - 0 Interbedded siltstone, tan silty claystone and silty semi-plastic clay.
263 - 1 Medium grained stylitic sandstone.
272 - 0 Brown silty claystone
291 - 0 Interbedded siltstone and fine grained sandstone.
291 - 8 Carbonaceous shale
295 - 2 Bone and shale.