Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Sunday August 28 - 1910 St. Johns
This morning ascended Signal Hill to get
a view of the harbor and the sea headlands. A
fog set in and could see nothing. Ascended again
in the afternoon and had a fine view.
These headlands are made of regularly bedded
red sandstone and conglomerates standing at 70°
or steeper. In general they look like the Cambrian
sandstones of southeastern Labrador but as they
underlie primarily underlie the Cambrian they are of
Algonkian age.
These sandstones lie in broad open folds.
Signal Hill is one limit of the syncline.
In character they are an arkose with the
feldspars unaltered, and the pieces are
angular to subangular.
Beneath the red sandstones are orthoquartzites and a greenish phyllite.
The hills in which St. Johns is built are of
the Aspidella slates. These sandy slates are hardened
by pressure but are fine slates. Have some Aspidella
collected near the Agriculture and Mines Building on Henry St.