Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
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Transcription
Hogbeck Mine section
from base lowest clay mined, up.
Footwall with ripple marked surface
A 0.1 Bentonite
B 1.0 Argillaceous siltstone, interbeds +
laminac of silt,
C 1.7 Clay, silty dk gr to black, with
thin laminac siltstone.
D 1.3 Interbedded platy to shaly siltstoue
and silty shale with silt
laminae.
E 2.5 Clay, Dk grey to black with silt
laminae, silty thru et top.
F 16.2 Sandstone, fine grained, clean,
X bed. Subrounded. Some Fe stain
G 1.3 Siltstoue, carbouaceous partings and
avqill. zones.
H 5.3 Clay, black finely silty semiplastic
with clstu fracture - no laminae
massive. More silty at base than
at top. Simple.(1)
I 1.0 Black shaly plastic & sculpstic.
A fissil zone at top of bed.
J 5.4 Sandstone, fine-grained, similar to F
but dirtier, with carb flecks, Fe stain.
K 2.7 Clay (not mined) olvtgrey to black
finely silty sculp., upper 0.16
with layers siltst. Sample(2)
L, 3.1 Sandstone, fine gr, X-bed, similar
to others, some carb matter near