Uploaded May 2022 | Updated September 2026, 1 week ago
The African Plate is a major tectonic plate straddling the Equator as well as the prime meridian. It includes much of the continent of Africa, as well as oceanic crust which lies between the continent and various surrounding ocean ridges. Continental rifting is breaking E. and S. Africa into multiple microplates.
This resource has been developed as part of the SAGE facility operated by IRIS via support
from the National Science Foundation.
For more animations on tectonic settings worldwide: www.iris.edu/earthquake
Written & directed by Dr. Robert F. Butler, University of Portland
Narrated by Asenath Kwagalakwe, VA Tech, and Dr. Wendy Bohon, IRIS.
Animation & graphics by Jenda Johnson, Earth Sciences Animated
Edited by Dr. Beth Pratt-Sitaula, UNAVCO and Dr. Sarah Stamps, Virginia Tech
Photographs from: Sarah Stamps; UNAVCO; Public domain sources
Maps from GeoMappApp and the U.S. Geological Survey
Earthquake locations from IRIS Earthquake Browser (www.iris/ieb)
Microplate rotations: Sarah Stamps et al, 2020, Redefining East African Rift System kinematics; in Geology
Rifting stages modified from Biggs et al., 2021, Volcanic activity and hazard in the East African Rift Zone; in Nature Communications
Video footage of Agadir is from the Associated Press (copyright)
Music from Youssoupha Sidibe, Sacred Sound (freemusicarchive.org) and Nnankasaa, Awatsimnba, and Wogala, Elgon Troup (freemusicarchive.org)
The African Plate is a major tectonic plate straddling the Equator as well as the prime meridian. It includes much of the continent of Africa, as well as oceanic crust which lies between the continent and various surrounding ocean ridges. Continental rifting is breaking E. and S. Africa into multiple microplates.
This resource has been developed as part of the SAGE facility operated by IRIS via support
from the National Science Foundation.
For more animations on tectonic settings worldwide: www.iris.edu/earthquake
Written & directed by Dr. Robert F. Butler, University of Portland
Narrated by Asenath Kwagalakwe, VA Tech, and Dr. Wendy Bohon, IRIS.
Animation & graphics by Jenda Johnson, Earth Sciences Animated
Edited by Dr. Beth Pratt-Sitaula, UNAVCO and Dr. Sarah Stamps, Virginia Tech
Photographs from: Sarah Stamps; UNAVCO; Public domain sources
Maps from GeoMappApp and the U.S. Geological Survey
Earthquake locations from IRIS Earthquake Browser (www.iris/ieb)
Microplate rotations: Sarah Stamps et al, 2020, Redefining East African Rift System kinematics; in Geology
Rifting stages modified from Biggs et al., 2021, Volcanic activity and hazard in the East African Rift Zone; in Nature Communications
Video footage of Agadir is from the Associated Press (copyright)
Music from Youssoupha Sidibe, Sacred Sound (freemusicarchive.org) and Nnankasaa, Awatsimnba, and Wogala, Elgon Troup (freemusicarchive.org)




![3 Basic Fault Types:Normal, Reverse, Strikeslip (educational 2021)
This clip includes selected excerpts from the more-in-depth animation, Earthquake Faults, Plate Boundaries, & Stress
https://www.iris.edu/hq/inclass/animation/635
Normal fault—the block above the inclined fault moves down relative to the block below the fault. This fault motion is caused by extensional forces and results in extension. [Other names: normal-slip fault, tensional fault or gravity fault] Examples include Basin & Range faults. Reverse fault—the block above the inclined fault moves up relative to the block below the fault. This fault motion is caused by compressional forces and results in shortening. A reverse fault is called a thrust fault if the dip of the fault plane is small. [Other names: reverse-slip fault or compressional fault.] Examples include the Rocky Mountains and the Himalayan Mountains. Strike-slip fault—movement of blocks along a fault is horizontal and the fault plane is nearly vertical. If the block on the far side of the fault moves to the left, as shown in this animation, the fault is called left-lateral (Figure 2). If it moves to the right, the fault is called right-lateral. The fault motion of a strike-slip fault is caused by shearing forces. [Other names: trans current fault, lateral fault, tear fault or wrench fault.] Examples include the San Andreas Fault, California; Anatolian Fault, Turkey. 3 Basic Fault Types:Normal, Reverse, Strikeslip (educational 2021)](https://i.ytimg.com/vi/f0N4uaykxy4/mqdefault.jpg)


![March 11, 2011 Japan Earthquake—10th Anniversary—Lessons Learned
It has been 10 years since the magnitude 9.1 earthquake and resulting tsunami hit Japan, on March 11, 2011 [Errata: Miyagi is misspelled. Apologies.]
Scientific lessons learned and described here include:
1. Tsunami geology can extend the earthquake record by centuries or millenia.
2. Earthquake Early Warning can mitigate damage and save lives, but the 2011earthquake revealed limitations of a system using only seismometers.
3. Adding Global Positioning System observations of earthquake ground motion improves accuracy of earthquake early warning, and is essential to tsunami warnings.
Errata: spelling of Miyagi. March 11, 2011 Japan Earthquake—10th Anniversary—Lessons Learned](https://i.ytimg.com/vi/gcSI8fBZsY0/mqdefault.jpg)


