Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
5/22/95 @ Holland (1993) locality
Caesar Lake Spillway (+ fail)
Spillway sections: Holland 1973, saw about 27' + f
limestone and siltstone with numerous bryoz., cracks,
and burrows. Some beds have wavy bedded lower
surfaces, some have wavy bedded upper surfaces,
some have both. One or two beds have
conchoidal fracture, 2" to 5" + thick; these can only
be traced for about 30 to 40 yards before they are
truncated by ripple surfaces. Two kinds of bryozoa
in general, smaller ones near base of section, &
several species; larger "Homotrypa" are extensive
near top. "Dictyons", Herbertella?, large solitary corals
common. Those have a cyclicity of 2' to 5' f
v. silty ligament & thinner siltstones.
"Several" collections There are 6 or 7 (click photos) of
these cycles which are more silty in the lower 1/2
and then become less silty upwards.
3 collections
5/22/95/A - float from wall of
spillway (walked across flat)
5/22/95/B - N side of roadway
float
5/22/95/C - on top of road in
place.
Same units as at Wright Bros. Mem. Hill RR
- more red, weathered zone. Dict is below this cut