This event was the last of three earthquakes that ruptured adjacent parts of the plate interface , forming a northeastward migrating sequence . The 1942 earthquake ruptured the Esmeraldas segment , the 1958 earthquake ruptured the Manglares segment and the 1979 event ruptured the Tumaco and Patia segments . Together they ruptured the same part of the megathrust as the 1906 earthquake . The rupture area of the 1979 earthquake measured 280 km long by 130 km wide
1958 earthquake
1958 Ecuador–Colombia earthquake
1979 Tumaco earthquake