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Aerial photographs of destructive land-slides and damage in Anchorage Graben at head of L Street landslide. Photo by A. Grantz. Anchorage district, Cook Inlet region, Alaska. n.d. Published as figure 18-A and 18-B in U. S.Geological Survey. Circular 491. 1964.
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ID. Alaska Earthquake 326
ake00326 |
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Alaska Earthquake March 27, 1964. Uplifted sea floor at Cape Cleare on Montague Island in Prince William Sound in the area of the greatest recorded tectonic uplift on land (33 feet). The very gently slopping flat rocky surface with the white coating which lies between the cliffs and the water is about a quarter of a mile wide. The white coating consists of the remains of calcareous marine organisms that were killed by desiccation when the wave-cut surface was lifted above high tide during the earthquake. Figure 11, U.S. Geological Survey Professional paper 541. See also photo aeq00002.
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ID. Alaska Earthquake no. 1ct
aeq00001 |
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Alaska Earthquake March 27, 1964. Uplifted wave-cut surface at Cape Cleare on Montague Island, showing white coating of desiccated calcareous marine organisms and brown desiccated stipes of "stalks" of kelp. The "stalks" are about 2 feet long. Figure 36, U.S. Geological Survey Professional paper 541. See also photo aeq00001.
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ID. Alaska Earthquake no. 2ct
aeq00002 |
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Alaska Earthquake March 27, 1964. Hinchinbrook Coast Guard dock, raised above all but the highest tides by regional uplift in Prince William Sound. Land in this area rose about 8 feet during the earthquake. Figure 16 (upper right), U.S. Geological Survey Professional paper 541.
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ID. Alaska Earthquake no. 3ct
aeq00003 |
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Alaska Earthquake March 27, 1964. The stumps in the foreground are part of an ancient forest on Latouche Island in Prince William Sound that was submerged below sea level and buried in prehistoric times. Tectonic uplift of 9 feet during the earthquake raised these stumps above sea level once again, demonstrating that the area is tectonically restless.
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ID. Alaska Earthquake no. 4ct
aeq00004 |
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Alaska Earthquake March 27, 1964. Muskeg-covered pre-earthquake marine terrace on Middleton Island at an altitude of 110-125 feet. It is one of five uplifted terraces on the island, and a surf-cut rock platform exposed between the base of the sea cliff and the new high tide level is a sixth terrace formed by uplift of about 11 feet in 1964. The white specks are seagulls. Photo was taken near 7-foot tide stage. April 4, 1964. Figure 36, U.S. Geological Survey Professional paper 543-I; Figure 4-A, Circular 491.
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ID. Alaska Earthquake no. 5ct
aeq00005 |
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Alaska Earthquake March 27, 1964. The amount of tectonic uplift on Glacier Island in Prince William Sound was shown by the upper limit to which algae of the intertidal zone are on this sea cliff before and after the earthquake. The top of the band of green (still living) algae is near present post- earthquake) mean high tide. The top of the band of brown (desiccated) algae marks the approximate position of mean high tide before the earthquake. The difference in height between the top of the bands of living and of desiccated algae (3 feet) is a measure of the amount of tectonic uplift in this area.
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ID. Alaska Earthquake no. 6ct
aeq00006 |
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Alaska Earthquake March 27, 1964. This road, along Women's Bay on Kodiak Island, is in an area that tectonically subsided 5 feet during the earthquake. Since subsidence, the road has been flooded at high tide and subjected to erosion by waves.
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ID. Alaska Earthquake no. 7ct
aeq00007 |
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Alaska Earthquake March 27, 1964. These spruce trees on a gravel spill on Resurrection Bay on the Kenai Peninsula are in an area which tectonically subsided 3 feet during the earthquake. The subsidence dropped the shallow roots of these trees below high tide, where they were killed by repeated inundation in salt water. 1964. Figure 10, U.S. Geological Survey Professional paper 541; Figure 19, U.S. Geological Survey Professional paper 543-I.
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ID. Alaska Earthquake no. 8ct
aeq00008 |
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Alaska Earthquake March 27, 1964. The village of Portage, at the head of Turnagain Arm of Cook Inlet, is now flooded at high tide as a result of 6 feet of tectonic subsidence during the earthquake. 1964.
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ID. Alaska Earthquake no. 9ct
aeq00009 |
| 11. |
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Alaska Earthquake March 27, 1964. The Hanning Bay fault was reactivated during the earthquake. Its trace is marked by a ten- to 15-foot high bedrock scarp which trends obliquely across the field of view from the right foreground to the left background. The fault trace lies between the uplifted wave-cut surface that is coated white by desiccated calcareous marine organisms and borders the open ocean and the area of brown sand and silt in the cove. The ground northwest of the fault (on the right) was displaced upward as much as 16 feet with respect to the ground southeast of the fault during the earthquake, but both sides of the fault were uplifted with respect to sea level due to general tectonic uplift of the region. The fault plane dips steeply northwest or is vertical. View is southwest along the Hanning Bay fault scarp on southwest Montague Island in Prince William Sound.
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ID. Alaska Earthquake no. 10ct
aeq00010 |
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Alaska Earthquake March 27, 1964. Hanning Bay fault scarp on Montague Island, looking northwest. Vertical displacement in the foreground, in rock, is about 12 feet. The maximum measured displacement of 14 feet is at the beach ridge near the trees in the background. Figure 8, U.S. Geological Survey Professional paper 541.
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ID. Alaska Earthquake no. 11ct
aeq00011 |
| 13. |
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Alaska Earthquake March 27, 1964. The zone of fresh earth and landslide at the foot of this hillside on Montague Island marks the southwest trending Patton Bay fault, which was reactivated during the earthquake. The northwest side of this vertical fault (on the left) was displaced upward as much as 8 feet with respect to the southeast side. There was, in addition, 9 feet of associated up warping of the upthrown (northwest) block, so that total vertical displacement across the entire fault zone was 17 feet. The view is northeast.
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ID. Alaska Earthquake no. 12ct
aeq00012 |
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Alaska Earthquake March 27, 1964. View is northeast where the Patton Bay fault strikes out to the sea at the southwest end of Montague Island. The fault offsets the beach at the foot of the cliff where the man in the red jacket is standing near the middle of the photo. The beach gravels drape over the fault. Displacement was vertical and up on the left (the northeast) side of the photo. The fault trace in the cliff lies directly above the man and follows the stream of relatively fine-grained talus in the lower part of the cliff and the straight narrow rill cut in bedrock in the upper part of the cliff. 1964.
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ID. Alaska Earthquake no. 13ct
aeq00013 |
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Alaska Earthquake March 27, 1964. Open fissures formed in bedrock adjacent to the Hanning Bay and Patton Bay faults during the earthquake. The fissures generally trended at high angles to the faults and were as wide as half a foot and as long as a few hundred feet. The fissures shown here opened about 1.5 inches. 1964.
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ID. Alaska Earthquake no. 14ct
aeq00014 |
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Tsunami damage at Seward. The waves came in from the sea via Resurrection Bay in the background. 1964.
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ID. Alaska Earthquake no. 15ct
aeq00015 |
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Alaska Earthquake March 27, 1964. Tsunami damage and high-water line at Seward. The tsunami waves washed the snow from the lower slopes of the hillsides, and the height of the highest wave is marked by the sharp "snow line" on the hillside behind and just above the rooftop at left center. 1964. Figure 4-D, U.S. Geological Survey Circular 491.
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ID. Alaska Earthquake no. 16ct
aeq00016 |
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Alaska Earthquake March 27, 1964. Overall view of downtown Kodiak before the tsunami (upper half) and after (lower half). The waves swept in from the left.
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ID. Alaska Earthquake no. 17ct
aeq00017 |
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Alaska Earthquake March 27, 1964. Tsunami damage along the waterfront at Kodiak. 1964. Cover (lower photo), U.S. Geological Survey Circular 491.
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ID. Alaska Earthquake no. 18ct
aeq00018 |
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Alaska Earthquake March 27, 1964. The 1200 L Street Building in Anchorage, a fourteen-story reinforced concrete apartment building, was severely damaged during the earthquake. One the main exterior piers (white bearing walls without windows) failed at the second floor, exposing the steel reinforced bars within the concrete. The reinforced concrete spandrels (green nonbearing panels under windows) failed mainly by "X" shear-cracking between the piers and horizontal cracking at the floor lines near the corner of the building. Figure 18, U.S. Geological Survey Professional paper 541.
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ID. Alaska Earthquake no. 19ct
aeq00019 |
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Alaska Earthquake March 27, 1964. The Hillside Apartment Building in Anchorage was severely damaged by the earthquake and has been razed. It was a split-level, five-story building with steel posts and lintels, concrete floor slabs, and unreinforced concrete block walls and partitions.
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ID. Alaska Earthquake no. 20ct
aeq00020 |
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Alaska Earthquake March 27, 1964. Compare the damage sustained by the Hillside Apartment Building and the adjacent three-story wood-frame dwelling with the tall chimney. In general, wood frame buildings in Anchorage sustained little damage from seismic vibration.
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ID. Alaska Earthquake no. 21ct
aeq00021 |
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Alaska Earthquake March 27, 1964. A small, one-story concrete block building situated on thick alluvial fill at Valdez was severely damaged. 1964.
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ID. Alaska Earthquake no. 22ct
aeq00022 |
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Alaska Earthquake March 27, 1964. The J.C. Penney Department Store in Anchorage suffered irreparable damage during the earthquake. Note the horizontal shear-cracking along construction joins in the reinforced concrete walls of which the back and part of the side of the store were constructed. Visible in the background is the northeast corner of the building which collapsed during the earthquake. 1964. Figure 20, U.S. Geological Survey Professional paper 541.
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ID. Alaska Earthquake no. 23ct
aeq00023 |
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Alaska Earthquake March 27, 1964. The Alaska Sales and Service building in Anchorage, which was under construction, partially collapsed during the earthquake. The building was constructed of pre-stressed concrete roof T's which rested on pre-cast reinforced concrete T-columns, and it had pre-cast reinforced concrete walls. Partial collapse followed failure of many of the connections between the roof T's, columns, and walls. Figure 19, U.S. Geological Survey Professional paper 541; Figure 18-D, U.S. Geological Survey Circular 491.
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ID. Alaska Earthquake no. 24ct
aeq00024 |
U.S. Department of the Interior | U.S. Geological Survey
