Timeline: The emergence of Isis. 1  1/40 2000 Abu Musab al-Zarqawi (pictured here) forms an al-Qaeda splinter group in Iraq, al-Qaâeda in Iraq. Its brutality from the beginning alienates Iraqis and many al-Qaeda leaders. 2  2/40 2006 Al-Zarqawi is killed in a U.S. strike.
Subduction zone earthquake. The area where the earthquake occurred is a subduction zone where the Pacific Plate is subducting beneath the North American Plate. The crust of southern Alaska was compressed and warped due to plate movement prior to the great earthquake after the plates locked together.Crustal plate movement.he area where the earthquake occurred is a subduction zone where the Pacific Plate is subducting beneath the North American Plate. The crust of southern Alaska was compressed and warped due to plate movement prior to the great earthquake after the plates locked together. Crustal plate movement.
Earthquakes occur because of the movements of the tectonic plates. Tectonic plates are large, flat pieces of stone that form the Earth's crust. These tectonic plates are actually moving in slow motion.ovement of the Earth's crust along the plate margins causes up-heaving and instability in land or ocean masses. Plate Tectonics is what this movement of the Earth's crust is called. The Earth's plates are constantly moving and can push together in places. Sometimes they get into a traffic jam.