Location map of the Kenai Peninsula and Kodiak Island, Alaska. The 1964 M9.2 Great Alaska Earthquake, which is still the second largest earthquake ever recorded worldwide, began under Prince State which plate tectonic interaction is occurring at this plate boundary (slip, collision, spreading, or subduction): Subductio n divergent 3. . spared many lives because schools were closed and few people were shopping on Good Friday. The US state was hit by a 9.2-magnitude earthquake in March 1964, the strongest ever recorded in North America. The easternmost megathrust earthquake was the March 28, 1964 M9.2 Prince William Sound earthquake, currently the second largest recorded earthquake in the world. A crevasse ripped apart an elementary school that was closed for the day. 1.2 Tectonics of the great 1964 Alaska earthquake. The earthquake rupture started approximately 25 km beneath the surface, with its epicenter about 6 miles (10 km) east of the mouth of College Fiord, Course Hero is not sponsored or endorsed by any college or university. This animation discusses the range of tectonic activity from megathrust earthquakes to accretion of geologic terranes. At this boundary, the Pacific Plate slides beneath the North American Plate, causing the majority of Alaska’s earthquakes, including the 1964 earthquake. The Kids Fun Science Bookstore covers a wide range of earth science topics. There were two types of waves generated during the earthquake. Parts of Montague Island were uplifted  4-9 meters (12 to 36  feet). A. Because of its higher relative density, as it collides into North America, the Pacific plate descends (subducts) beneath the North American plate. The Anchorage International Airport tower collapsed during the earthquake. The megathrust boundary between the plates results in both the 4,000-km-long Aleutian Trench and in the arc of active volcanoes that lie subparallel to the trench. Schools and residential damageThe residential area of Anchorage suffered total destruction when the bluffs collapsed. The main but not initial megathrust in the eastern part of the great 1964 Alaska M 9.2+ earthquake was actually the yak thrusting west-southwest onto the Pacific plate (Reeder, 2016; Stauder and Bollinger, 1966; Wyss and Brune, 1967). The 1964 Alaskan earthquake, also known as the Great Alaskan earthquake and Good Friday earthquake, occurred at 5:36 PM AKST on Good Friday, March 27. The area is now Earthquake Park. Alaska is part of the seismically active 'Pacific Ring of Fire'. The Great Alaskan Earthquake of 1964 happened on Good Friday, March 27th, at 5:36 p.m. Atlantic Daylight Time. Two hundred acres of land slid into the ocean at Turnagain Heights. State at least two geological events that are happening at the, location (examples are formation of volcanoes and earthquakes)? New!! The Earthquake and Its Effects The 1964 Alaska earthquake resulted from rupture along the thrust fault boundary bet-ween the downgoing Pacifi c Plate and the overriding North American Plate, causing widespread shaking and tectonic defor-mation. On Good Friday, March 28, 1964, south-central Alaska was struck by the second-largest earthquake ever recorded. Subduction zone earthquakes follow the descent of the Pacific plate down to 200 km or more. The 1964 earthquake in Anchorage, Alaska occurred as a result of an oceanic plate sinking under a continental or land plate. As … The epicenter of the earthquake was 6 miles east of the mouth of College Fiord, approximately 55 miles west of Valdez and 74 miles east of Anchorage. Only 9 people died from the earthquake, but 130 died from the subsequent tsunami; 10 as far away as Crescent City, CA. List the plates that make up the, 2. Look at the arrows on the map. The March 27, 1964, earthquake was accomp anied by crustal deformation-including warping, horizontal distortion, and faulting-over probably more than 110,000 square miles of land and sea bottom in south-central Alaska. The Alaskan Earthquake 1964 An examination of the 1964 Alaska Good Friday Earthquake from a (pre- plate tectonics theory) geological point of view. Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 131 deaths. It rocked the state with strong ground shaking for 4.5 minutes. Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. Alaska’s largest earthquakes, exceeding magnitude 8 and even 9, occur primarily in the shallow part of the subduction zone, where the crust of the Pacific Plate sticks and slips past the overlying crust. The 1964 Good Friday Earthquake and Tsunami, 1912 eruption of Novarupta in Katmai National Park, EcG9zAzQEdnRpZANDMDE2MF8xBHNlYwNzcg--/RV=2/RE=1606789255/RO=10/RU=, https%3a%2f%2fwww.onlyinyourstate.com%2falaska%2fmost-horrifying-natural-, disasters-ak%2f/RK=2/RS=bPQd9tJPtgcEozL6J6OvTKQJzAI-. 1964 Alaska earthquake is mega thrust earthquake that occurred in the subduction zone that Pacific plate was subducting beneath the North American plate or along the Aleutian fault with length of 3400 kilometers. On March 27th, 1964 the afternoon of Good Friday, the strongest earthquake recorded in North America hit Anchorage, Alaska and became known as the great Alaskan earthquake/the Good Friday earthquake. Off the coast of Alaska lies the Aleutian Subduction Zone –a 2,500 mile long convergent plate boundary where the Pacific Plate subducts under the North American Plate at a rate of 6–7 cm/yr. List the plates that make up the boundary: pacific plate and oceanic plate 2. Thanks to the technology and inquiring minds we are able to study past events like the 1906 San Francisco earthquake and the 1964 Alaska earthquake. Northern Virginia Community College • ENV 121, Environmental Geology Notes on Metamorphic Rock, deep_earth_structure_global_tectonics_d_mueller.pdf, 1. Damage in downtown Anchorage, USGS The marker represents events on a plate boundary. Geology and the Environment (1)-merged.pdf, Coastline Community College • GEOLOGY 105. It was generated by movement on the ocean floor. Two types of tsunami were produced as a result of this massive quake. Earth scientists now recognize that the 1964 Great Alaska Earthquake resulted from plate convergence: where the Pacific megathrust fault during the 1964 earthquake Plate is being overridden by the North American Plate, it descends, or subducts, into the Earth’s mantle along the Aleutian Trench. The 1964 earthquake was caused by the same processes that cause the majority of earthquakes in that area. Pacific Plate subducting beneath the North American PlateThe area where the earthquake occurred is a subduction zone where the Pacific Plate is subducting beneath the North American Plate. Most of the people were home and schools were closed for the day. See more » Mercalli intensity scale. Scroll down to read more. It was the largest earthquake ever recorded in North America. That’s where one tectonic plate sinks beneath another. Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. The Pacific Plate containing the Pacific Ocean is being pushed under the North American Plate. In comparing these two events we can get an overview of what happened and better prepare ourselves for something like that in the future. Award Winning Earth Science Materials at our Bookstore. Many houses, buildings and infrastructures were damaged or destroyed. Produced by Creative Arts Studio in 1964 for the USGS. The epicenter was six miles (10 kilometers) east of College Fiord in the Prince William Sound. The US state was hit by a 9.2-magnitude earthquake in March 1964, the strongest ever recorded in North America. © 2011-2020 Call of Fire Science Company  All rights reserved. the website about where these events are taking place. The boundary of aftershocks from the 1964 earthquake by Furumoto [1965] is shown by the thick line. Alaska earthquake of 1964, earthquake that occurred in south-central Alaska on March 27, 1964, with a moment magnitude of 9.2. Two types of tsunami were produced as a result of this massive quake. 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