Geoscience Reference
In-Depth Information
Table 4.1 Damaging earthquakes of the St. Lawrence Rift System
Event
number
Time
(UT)
Date
Region
Lat.
Long.
Mag.
Landslide
Description
1
1663-02-05
22:30
Charlevoix-Kamouraska,
Quebec
47.6
70.1
7
Yes
Epicenter most likely in the Charlevoix
Seismic Zone, Quebec. Some damage to
masonry in Quebec City, Trois-Rivieres
and Montreal. Landslides reported in
the Charlevoix region and along the St.
Lawrence Valley. Numerous aftershocks
felt in Quebec City during the following
months.
2
1732-09-16
16:00
Near Montreal, Quebec
45.5
73.6
5.8
No
Probable epicenter near Montreal, Qc.
Considerable damage in the city of
Montreal where hundreds of chimneys
were damaged and walls cracked.
3
1791-12-06
20:00
Charlevoix-Kamouraska,
Quebec
47.4
70.5
6
No
Damage to houses and churches in
Charlevoix.
70.1
4
1860-10-17
11:15
Charlevoix-Kamouraska,
Quebec
47.5
6
No
Damage in the epicentral region on both
shores of the St. Lawrence River.
5
1870-10-20
16:30
Charlevoix-Kamouraska,
Quebec
47.4
70.5
6
½
Yes
Considerable damage to houses in
Charlevoix along the South Shore of the
St. Lawrence River. Damage to
chimneys reported in lower town in
Quebec City. Possible rock slide along
the Saguenay River.
 
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