The Azores–Gibraltar Transform Fault (AGFZ), also called a fault zone and a fracture zone, is a major seismic zone in the Eastern Atlantic Ocean between the Azores and the Strait of Gibraltar. It is the product of the complex interaction between the African, Eurasian, and Iberian plates.The AGFZ produced the large-magnitude 1755 Lisbon, 1761, 1816, 1941 Gloria Fault earthquake, 1969 Horseshoe and 1975 earthquakes and, consequently, a number of large tsunamis.