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Hawke's Bay, New Zealand, Earthquake February 3, 1931. Earthquake-damaged buildings in Napier, looking toward the Clarendon Hotel. 1931. Page 17 (lower photo), Earthquake Information Bulletin, v.16, no.1.
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The National Geologic Map Database (NGMDB) is a Congressionally mandated national archive of geoscience maps, reports, and stratigraphic information. The Geologic Mapping Act of 1992 and its Reauthorizations calls for the U.S. Geological Survey and the Association of American State Geologists (AASG) to cooperatively build this national archive, according to technical and scientific standards whose development is coordinated by the NGMDB. The NGMDB consists of a comprehensive set of publication citations, stratigraphic nomenclature, downloadable content in raster and vector formats, unpublished source information, and guidance on standards development. The NGMDB contains information on more than 110,000 maps and...
Tags: AASG, Aeromagnetics, Association of American State Geologists, Bedrock geology, CSS, All tags...
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Guatemala Earthquake 1976. South along a secondary fault of the Mixco zone that intersects an excavation for a sedimentation basin in Guatemala City's new water treatment plant. The fault, which dips 60 degrees west (to the right) is visible in the wall of the excavation in the background and was exposed in the line of pits in the floor of the excavation. Soil horizons in the Pleistocene tephra in the wall of the excavation are offset at least 7 meters, indicating repeated movement on this same strand during late Quaternary time. Because of the faulting, the design of the settling basin had to be changed to avoid the fault trace. Available information suggests that at least part of the 5 centimeters displacement...
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Ragay Gulf, Philippines, Earthquake 1973. Left lateral offset of the beach line (3.2 meters) at the time of the 1973 Ragay Gulf earthquake. The offset was confirmed by numerous other displaced features nearby, such as rows of coconut trees. The break followed the low pre-existing scarp. Page 9, Earthquake Information Bulletin, v.10, no.1.
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Peru Earthquake May 31, 1970. Destruction of adobe houses in central Huarez. 1970. Back cover, Earthquake Information Bulletin, v.12, no.2.
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Tadzhikistan Earthquake 1949. Rising behind the village of Khait is Chokhran Mountain, down which a landslide thundered in the 1949 earthquake. The landslide scar and landslide are visible behind and to the left of Khait, respectively. Photo by R.L. Wesson. Page 12, Earthquake Information Bulletin, v.7, no.1.
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Guatemala Earthquake 1976. Bent rails at Puerto Barrios(?) wharf caused by faulting. Photo by A.F. Espinosa. Figure 2, page 8, Earthquake Information Bulletin, v.9, no.2.
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Hawke's Bay, New Zealand, Earthquake February 3, 1931. Fire-damaged buildings and cars in Napier. 1931. Page 17 (upper photo), Earthquake Information Bulletin, v.16. no.1.
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Peru Earthquake October 3, 1974. Example of the extensive damage in La Molina District. This classroom and a laboratory building at the Agrarian University partially collapsed. 1974. Pages 6-7, Earthquake Information Bulletin, v.7, no.2.
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Provided here is a globally distributed catalog of earthquakes and nuclear explosions with calibrated hypocenters, referred to as the Global Catalog of Calibrated Earthquake Locations or GCCEL. This dataset contains more than 23,736 earthquakes in 344 well distributed clusters. Currently there are more than 4M arrival times with the majority being the Pg, Pn, P, Sg, Sn and S phases. The term “calibrated” refers to the property that the hypocenters are minimally biased by unknown Earth structure and that the uncertainties are meaningful. Uncertainties are calculated using empirically determined variability of the arrival time data itself, specific to each calibrated cluster of hypocenters. The data are carefully...
    map background search result map search result map Example of the extensive damage in La Molina District. Peru Earthquake October 3, 1974. Bent rails at Puerto Barrios(?) wharf caused by faulting. Guatemala Earthquake 1976. Left lateral offset of the beach line (3.2 meters) at the time of the 1973 Ragay Gulf earthquake. Ragay Gulf, Philippines, Earthquake 1973. Destruction of adobe houses in central Huarez. Peru Earthquake, 1970. Fire-damaged buildings and cars in Napier. Hawke's Bay, New Zealand, Earthquake. 1931. Earthquake-damaged buildings in Napier, looking toward the Clarendon Hotel. Hawke's Bay, New Zealand, Earthquake, 1931. South along a secondary fault of the Mixco zone that intersects an excavation for a sedimentation basin in Guatemala City's new water treatment plant. Guatemala Earthquake 1976. USGS National Geologic Map Database Collection Bent rails at Puerto Barrios(?) wharf caused by faulting. Guatemala Earthquake 1976. South along a secondary fault of the Mixco zone that intersects an excavation for a sedimentation basin in Guatemala City's new water treatment plant. Guatemala Earthquake 1976. Left lateral offset of the beach line (3.2 meters) at the time of the 1973 Ragay Gulf earthquake. Ragay Gulf, Philippines, Earthquake 1973. Example of the extensive damage in La Molina District. Peru Earthquake October 3, 1974. Destruction of adobe houses in central Huarez. Peru Earthquake, 1970. USGS National Geologic Map Database Collection Fire-damaged buildings and cars in Napier. Hawke's Bay, New Zealand, Earthquake. 1931. Earthquake-damaged buildings in Napier, looking toward the Clarendon Hotel. Hawke's Bay, New Zealand, Earthquake, 1931.