Moderate mag. 5.7 earthquake - La Rioja, Argentina, on Monday, 26 March 1973 at 11:04 (GMT)

Moderate mag. 5.7 earthquake - La Rioja, Argentina, on Monday, 26 March 1973 at 11:04 (GMT)

Moderate magnitude 5.7 earthquake at 117 km depth

Date & time: 26 Mar 1973 11:04:19 UTC
Magnitude: 5.7
Depth: 117.0 km
Epicenter latitude / longitude: 28.049°S / 68.942°W (Argentina)
Nearest volcano: Incapillo (22 km / 14 mi)
Nearby towns and cities:
107 km (66 mi) NW of Vinchina (pop: 2,830) --> See nearby quakes!
135 km (84 mi) W of Tinogasta (pop: 14,500) --> See nearby quakes!
137 km (85 mi) WSW of Fiambala (pop: 8,060) --> See nearby quakes!
156 km (97 mi) ESE of Copiapo (Chile) (pop: 129,300) --> See nearby quakes!
188 km (117 mi) NW of Chilecito (pop: 42,200) --> See nearby quakes!
244 km (152 mi) N of San José de Jachal (pop: 21,000) --> See nearby quakes!
254 km (158 mi) NW of La Rioja (pop: 162,600) --> See nearby quakes!
313 km (194 mi) W of San Fernando del Valle de Catamarca (pop: 188,800) --> See nearby quakes!
392 km (243 mi) WSW of Tucuman (pop: 781,000) --> See nearby quakes!
1240 km (770 mi) WNW of Buenos Aires (pop: 13,076,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 5.7117 kmLa Rioja, ArgentinaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks of the 5.7 quake La Rioja, Argentina, 26 March 1973 11:04 GMT

More info
Recorded aftershocks, latest first (2 quakes):
  • 22 May 1973 17:40 UTC
    | M 4.1 |
    100 km (62.1 mi) depth
    |
    32 km (20 mi) distance
    | USGS | Details
  • 26 Mar 1973 12:11 UTC
    | M 4.7 |
    94 km (58.4 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Moderate mag. 5.7 earthquake - La Rioja, Argentina, on Monday, 26 March 1973 at 11:04 (GMT)
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