QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0000cs5
USGS usp0000cs5

11 Sept 1975, 22:59

Galapagos Triple Junction region

A magnitude 6.4 mb earthquake at 33 km depth.

Depth33 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is Galapagos Triple Junction region?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

6.989000, -104.275000

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Map data © OpenStreetMap contributors

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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Continue exploring

Nearby events with a similar magnitude

M 6.56

Galapagos Triple Junction region

M 6.7

Galapagos Triple Junction region

M 6

Galapagos Triple Junction region

M 5.3

northern East Pacific Rise

M 5

northern East Pacific Rise

M 5

northern East Pacific Rise

Catalog fields and provenance
Event ID
usp0000cs5
Coordinates
6.989, -104.275
Network
us
Significance
630