Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Wea.
THUR. JAN. 14, 1909
Ther.
East side / St. Lawrence Folly = Leroi-Laurgn - St. Joseph.
From the Citadel.
Very ground level
1
2
3
4
5
are highly deformed or thrustated Ordovician strata.
West side / St. Lawrence Folly - Overturnment to Quartz.
Paleozoic Foreland
Ordovician
thrusts horizontal on granite.
Rest directly on Granite.
Laurentides granite pits
3000' - 4000'
009
very