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Log and data from a trench across the Hubbell Spring Fault Zone, Bernalillo County, New Mexico Log and data from a trench across the Hubbell Spring Fault Zone, Bernalillo County, New Mexico
This report contains field and laboratory data resulting from a trench study of the Hubbell Spring fault zone near Albuquerque, New Mexico. This trench was excavated in September, 1997, as part of earthquake hazards investigations of Quaternary faults in the Albuquerque metropolitan area. The trench was excavated across the youngest of several fault strands near the northern end of the...
Map of Distribution of Bottom Sediments on the Continental Shelf, Gulf of Alaska Map of Distribution of Bottom Sediments on the Continental Shelf, Gulf of Alaska
Introduction The U.S. Geological Survey has a long history of exploring marine geology in the Gulf of Alaska. As part of a cooperative program with other federal and state agencies, the USGS is investigating the relations between ocean-floor geology and benthic marine biohabitats. This bottom sediment map, compiled from published literature will help marine biologists develop an...
Map showing inventory and regional susceptibility for Holocene debris flows, and related fast-moving landslides in the conterminous United States Map showing inventory and regional susceptibility for Holocene debris flows, and related fast-moving landslides in the conterminous United States
Introduction Debris flows, debris avalanches, mud flows and lahars are fast-moving landslides that occur in a wide variety of environments throughout the world. They are particularly dangerous to life and property because they move quickly, destroy objects in their paths, and often strike without warning. This map represents a significant effort to compile the locations of known debris...
Map showing Quaternary geology and geomorphology of the Granite Park area, Grand Canyon, Arizona Map showing Quaternary geology and geomorphology of the Granite Park area, Grand Canyon, Arizona
View to west-northwest showing map area and setting of Granite Park; Grand Canyon, Arizona. The Colorado River flows from right to left. Granite Park Wash is the light-colored area in foreground of photograph. The debris fan of 209 Mile Canyon is at left center. Pleistocene gravel is exposed in the steep, light-colored bank above 209 Mile Rapids at left edge of photograph. The black...
Map showing recent and historic landslide activity on coastal bluffs of Puget Sound between Shilshole Bay and Everett, Washington Map showing recent and historic landslide activity on coastal bluffs of Puget Sound between Shilshole Bay and Everett, Washington
Many landslides occurred on the coastal bluffs between Seattle and Everett, Washington during the winters of 1996 and 1997. Shallow earth slides and debris flows were the most common, but a few deep-seated rotational earth slides also occurred. The landslides caused significant property damage and interfered with rail traffic; future landslides in the area pose significant hazards to...
Quaternary geologic map of the Winnipeg 4° x 6° quadrangle, United States and Canada Quaternary geologic map of the Winnipeg 4° x 6° quadrangle, United States and Canada
The Quaternary Geologic Map of the Winnipeg 4° x 6° quadrangle, United States and Canada, is a component of the U.S. Geological Survey Quaternary Geologic Atlas of the United States map series (Miscellaneous Investigations Series I-1420), an effort to produce 4° x 6° Quaternary geologic maps, at 1:1 million scale, of the entire conterminous United States and adjacent Canada. The map and...
Seafloor Rocks and Sediments of the Continental Shelf From Monterey Bay to Point Sur, California Seafloor Rocks and Sediments of the Continental Shelf From Monterey Bay to Point Sur, California
Introduction Acoustic swath mapping of the greater Monterey Bay area continental shelf from Point Ano Nuevo to Point Sur reveals complex patterns of rock outcrops on the shelf, and coarse sand bodies that occur in distinct depressions on the inner and mid-shelves. This publication portrays the seafloor components in a 36- by 48-inch map sheet at 1:100,000 scale.
Seismic-hazard maps for Hawaii Seismic-hazard maps for Hawaii
Probabilistic seismic hazard maps were prepared for Hawaii portraying peak horizontal ground acceleration and horizontal spectral response acceleration for 0.2, 0.3, and 1.0 second periods with probabilities of exceedance of 10% in 50 years and 2% in 50 years. This particular data set is for horizontal spectral response acceleration for 1.0 second period with a 10% probability of...