QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup913363
USGS iscgemsup913363
4 Dec 1918, 17:42
85 km SW of Antofagasta de la Sierra, Argentina
A magnitude 6.4 mw earthquake at 35 km depth.
Published location
Where is 85 km SW of Antofagasta de la Sierra, Argentina?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-26.697000, -67.881000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Catalog fields and provenance
Event ID
iscgemsup913363
Coordinates
-26.697, -67.881
Network
iscgemsup
Significance
630