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North Peak of Nevados Huascaran, the source of debris avalanche that buried the town of Yungay and Ronrajirca. An estimated 25-50 million cubic waters of and ice broke from the part of the peak in shadow. Peru. 1970.
Peru Earthquake May 31, 1970. Field west of the Rio Shacsha that was pockmarked by boulders hurled cross the Rio Shacsha valley. Most of the rocks are projectiles derived from the Huascaran debris avalanche. June-July 1970.
Peru Earthquake October 3, 1974. Heavily damaged building in the Lima area after the magnitude 7.6 shock. 1974. Earthquake Information Bulletin, v. 7, no. 2, p. 11.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Earthquakes,
Peru,
Peru Earthquake October 3, 1974,
photo print
Peru Earthquake May 31, 1970. Block of granodiorite weighing 7,000 tons that was swept along by the Huascaran debris avalanche. Photo by G.E. Ericksen, circa 1970. Pages 68-69 (lower photo), Earthquake Information Bulletin, v.12, no.2.
Categories: Image;
Tags: Ericksen G.E.,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
photo print
Peru Earthquake May 31, 1970. Destruction of adobe houses in central Huarez. 1970. Back cover, Earthquake Information Bulletin, v.12, no.2.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Earthquakes,
Peru,
Peru Earthquake May 31, 1970,
photo print
Peru Earthquake May 31, 1970. Block of granodiorite (estimated to weigh 700 tons) that was transported by the Huascaran debris avalanche to near the site of the former town of Ranrahirca. A layer of mud showing polygonal cracks resulted from seepage from the avalanche after it came to rest. The top of the block is covered with mud and rock fragments deposited by the avalanche after the block came to rest. 1970. Figure 6, U.S. Geological Survey Circular 639.
Categories: Image;
Tags: Earthquakes,
Peru,
Peru Earthquake 1970 Collection,
Photographers,
photo print
Peru Earthquake May 31, 1970. Block of granodiorite estimated to weigh about 7,000 metric tons that was transported by the Huascaran debris avalanche and deposited near the Rio Santa west of Ranrahirca. The top of the block is covered with boulders that were deposited from the debris flow after the block came to rest. This block was left exposed after the enclosing mud flowed and/or was washed away after the avalanche. The pole at the base of the block is 4 meters high. June-July 1970.
Categories: Image;
Tags: Earthquakes,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
Plafker, G. Collection,
South America is part of Region 6 (Central and South America) for the World Energy Assessment. South America was divided into 107 geologic provinces as background for prioritization and assessment of undiscovered oil and gas resources. The boundaries of geologic provinces are required for the assessment as oil and gas. Data must be allocated to a geographic entity so that decisions can be made as to which provinces are priority for the assessment. Many sources of geologic information were used to define the province boundaries in South America, and several versions of the map were reviewed. Of the 107 geologic provinces defined in South America, about 40 have had some oil and gas production to date.
Categories: Data,
pre-SM502.8;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: AR,
Acre Basin, Province 6042,
Altiplano Basin, Province 6065,
Amazonas Basin, Province 6012,
Andean Province 6006,
Large impact crater (2.5 meters deep, 7 meters wide, and 11 meters long) in field at the south side of Quebrada Llanganuca, which was made by a huge block of rock or cluster of rocks hurled several hundred meters by the Huarascan debris avalanche. All rocks in or near crater are projectiles or fragments of projectiles from the avalanche. The two large rocks in the crater are about 2 1/2 meters in longest dimension. Peru. 1970. Published as figure 3 in U. S. Geological Survey. Circular 639. 1970.
Peru Earthquake May 31, 1970. Lower part of the Huascaran debris avalanche: Yungay, Ranrahirea, Matacoto, Cemetery Hill in Yungay, overtopped ridge between the Rio Shacsha and Yungay. The combined Yungay and Ranrahirea debris lobes cover an area of about 8 kilometers and probably contain close to 50 million meters of material. June 1970.
Categories: Image;
Tags: Earthquakes,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
Plafker, G. Collection,
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.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Earthquakes,
Peru,
Peru Earthquake October 3, 1974,
photo print
A lobe of the Huascaran debris avalanche that now covers the former city of Yungay; the avalanche flowed over a 100-200 meter high ridge (arrow) between Yungay and Llanganuco Valley. Peru. 1970. Published as figure 4 in U. S. Geological Survey. Circular 639. 1970.
Categories: Image;
Tags: Earthquakes,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
photo print
Peru Earthquake May 31, 1970. Bus and truck were completely intermeshed by the Huascaran debris avalanche. Photo by G.E. Ericksen, 1970. Pages 68-69 (upper photo), Earthquake Information Bulletin, v.12, no.2.
Categories: Image;
Tags: Earthquakes,
Ericksen, G.E. Collection,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
These data are derived from the Pleistocene Sacarosa tephra-fall deposit (TFD) which erupted from Misti volcano, Arequipa, southern Peru. The deposit represents a major eruption of Misti and these data are used to characterize the deposit. The radiocarbon ages are from units bracketing the Sacarosa TFD and constrain its eruption age. Whole-rock major and trace element concentrations for Sacarosa pumice were determined by X-ray flourescence and inductively coupled plasma mass spectrometry. Density was measured for 89 pumice from six bulk samples of the Sacarosa TFD. These data are provided as part of an effort to characterize the Sacarosa TFD and determine its eruption age.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Arequipa,
Misti volcano,
Peru,
Plinian eruption,
Sacarosa tephra-fall deposit,
As a result of a Latin American Coal Assessment, the USGS published the first Coal Map of South America (Weaver and Wood, 1994) and developed a cooperative inter-American exchange of geologic information which lead to a better understanding of the potential for coal resource utilization in the western hemisphere. This coal study was started by the late Gordon H. Wood, Jr. The original compilation, completed before his death, was a result of library research and it did not include updated information from scientists and others in the coal-bearing countries of South America. During the Fall of 1991, Jean N. Weaver visited Uruguay, Argentina, Chile, Peru, Ecuador, Colombia, Venezuela, Brazil, and Bolivia. The purpose...
Peru Earthquake May 31, 1970. Nevados Huascaran and the Huascaran debris avalanche that destroyed Yungay and Ranrahira. Portion of figure 2, U.S. Geological Survey Circular 639.
Categories: Image;
Tags: Earthquakes,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
Plafker, G. Collection,
Overturned bus on top of debris avalanche at site of former Plaza de Armas, Yungay. Depth of avalanche here is about 15 feet, Peru, 1970.
Categories: Image;
Tags: Earthquakes,
Peru,
Peru Earthquake May 31, 1970,
Photographers,
photo print
South America is part of Region 6 (Central and South America) for the World Energy Assessment. The geologic map of South America was digitized so that we could use the geology as a general guide to draw the boundaries of the geologic provinces of South America.
Categories: Data,
pre-SM502.8;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: AR,
Acre Basin, Province 6042,
Altiplano Basin, Province 6065,
Amazonas Basin, Province 6012,
Andean Province 6006,
Peru Earthquake May 31, 1970. Impact crater 15 meters long, 11 meters wide, and 2.5 meters deep made by the large light-colored block in the crater which has dimensions of about 2 by 2 by 3 meters. Most of the other rocks, including the large dark-colored one in the crater, are glacial deposits that predate the avalanche. June-July 1970.
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