Many ancient events have left their mark on the modern-day
topography of the Maritimes, but none have been as influential as
glacial movement and its aftermath. Glacial ice sheets held the
region in their icy grip until about 16,000 years ago, when
climatic warming triggered ice retreat rising sea level over a
period of several thousand years. Truro at the head of the Bay of
Fundy became ice free about 14,500 years ago, but between it and
Dartmouth was a great lake that geologists now call Glacial Lake
Shubenacadie.
Eastern Passage
Striations.
The gouges and grooves (striations) on the surface of this
Cambrian-Ordovician metamorphosed sedimentary rock at Hartlen Point
were produced by ice-borne debris at the base of a glacier during
the last glaciation, about 25,000 to 14,000 years ago.
Glaciers provide a great erosive force, acting like giant
bulldozers. Evidence of glacial erosion include polished rock
surfaces and striations.
In order to claim this EarthCache:
1.Please post a picture of you and/or your GPS with The gouges
and grooves(striations) in the background.
2. Also what is the common depth of the groves or gouges.
3.Last but not least please email the name of the last glacier
that covered the Maritimes? until about 14,000 years ago.
You DO
NOT need to wait for confirmation from me to log your find. Logs
not meeting the requirements will be
deleted.