|
| Year |
Location |
Magnitude |
Comment |
|
| 1930 |
Near Napoleonville, Louisiana
|
4.2 |
The largest historical earthquake in Louisiana.
|
|
| 1935 |
Helena, Montana
|
6.3 |
Two people were killed by falling bricks, several were injured,
and property damage was estimated at about $3 million.
The earthquake damaged about 300 buildings, of which more than 200 lost their chimneys.
Damage was most severe in 2 and 2 1/2-story brick houses on alluvial soil
in northeast Helena, but severe damage also occurred in the southern business section of
Helena. Downed chimneys and cracked plaster were common throughout the city,
and in sections, almost all chimneys were destroyed.
Gables commonly were damaged, regardless of the structural material used
or the location of the building.
|
|
| 1991 |
Northern India
|
6.8 |
Local time: October 20.
One of the world's deadliest earthquakes.
Two events about 1.6 seconds apart. At
least 2,000 people killed, more than 1,800 injured and 18,000
buildings destroyed in the Chamoli-Uttarkashi area. Some damage
occurred at Chandigarh and New Delhi. Felt in northern India,
western Nepal and northeastern Pakistan. Landslides occurred in
the epicentral area. A 30-meter deep crack was noted in the
Uttarkashi area.
See also:
UTTARKASHI EARTHQUAKE OF OCTOBER 20, 1991
|
|
|
U.S. Department of the Interior | U.S. Geological Survey