All Maps

This map and accompanying digital files are the result of the interpretation of aerial photographs from the 1950s as well as more modern imagery. The area, long considered a part of Alaska that was largely not glaciated (see Karlstrom, 1964; Coulter and others, 1965; or Péwé, 1975), actually has a long history reflecting local and more distant glaciations. An unpublished photogeologic...

The Masters 7.5' quadrangle is located along the South Platte River corridor on the semiarid plains of eastern Colorado and contains surficial deposits that record alluvial, eolian, and hillslope processes that have operated in concert with environmental changes from Pleistocene to present time. The South Platte River, originating high in the Colorado Front Range, has played a major role...

This map overlays a georeferenced thermal image mosaic onto a map of the flow field to show the distribution of active and recently active breakouts.

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to the eastern part of the Island of Hawai‘i.

This satellite image was captured on Wednesday, September 2, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite.

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field.

Digital flood-inundation maps for a 12.4-mile reach of Big Creek that extends from 260 feet above the McGinnis Ferry Road bridge to the U.S. Geological Survey (USGS) streamgage at Big Creek below Hog Wallow Creek at Roswell, Georgia (02335757), were developed by the USGS in cooperation with the cities of Alpharetta and Roswell, Georgia. The inundation maps, which can be accessed through...

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field.

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to the eastern part of the Island of Hawai‘i.

This map updates the geology of Baranof Island based on fieldwork, petrographic analyses, paleontologic ages, and isotopic ages. These new data provide constraints on depositional and metamorphic ages of lithostratigraphic rock units and the timing of structures that separate them. Kinematic analyses and thermobarometric calculations provide insights on the regional tectonic processes...

Coastal zone managers and researchers often require detailed information regarding emergent marsh vegetation types (that is, fresh, intermediate, brackish, and saline) for modeling habitat capacities and needs of marsh dependent taxa (such as waterfowl and alligator). Detailed information on the extent and distribution of emergent marsh vegetation types throughout the northern Gulf of...

This map overlays a georeferenced thermal image mosaic onto the flow field change map to show the distribution of active and recently active breakouts.