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USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. They also organize, maintain, and publish the geospatial baseline of the Nation's topography, natural landscape, built environment and more.
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January 15, 2025—Kīlauea summit eruption reference map
This reference map depicts the ongoing Kīlauea summit eruption within Halema‘uma‘u crater as of January 15, 2025.
Surficial geology and Quaternary tectonics of the Madison Valley and fault zone, Madison, Gallatin, and Beaverhead Counties, southwest Montana
The north-northwest-striking Madison fault is approximately 95 kilometers in length, lying at the confluence of the northeastern Basin and Range province and the Yellowstone tectonic parabola. The fault zone consists primarily of west-dipping normal faults that have east-dipping antithetic faults, which create the Madison Valley graben and several northeast-trending intrabasin faults...
Map of topographic lineaments interpreted as recent surface ruptures along the Bennett Valley and Southern Maacama Fault Zones, Sonoma County, California
This study documents lidar-illuminated topographic lineaments interpreted as evidence of recent surface fault ruptures and surface ruptures related to distributed deformation along the Bennett Valley Fault Zone and the southernmost Maacama Fault Zone in the northern San Francisco Bay area (fig. 1, on map sheet). Together, these fault zones form a structural connection across a right...
January 2, 2025—Kīlauea summit eruption reference map
This reference map depicts the Kīlauea summit eruption within Halema‘uma‘u as of January 2, 2025.
December 30, 2024 — Kīlauea summit thermal map compilation
This compilation shows thermal maps of Kīlauea summit eruption for December 23-30, 2024.
December 30, 2024 — Thermal map of eruption at Kīlauea summit
This thermal map shows eruptive activity on December 30, 2024, within Halemaʻumaʻu crater at the summit of Kīlauea. Lava fountaining and flows were active in the southwest portion of the caldera. Cooler colors (purple, black) show lower temperatures while hotter colors (orange, yellow) show higher temperatures.
Geologic map of Scoggins Dam, Henry Hagg Lake, and Scoggins Valley, Washington County, Oregon
New geologic mapping (Wells and others, 2020b) and geophysical mapping (Blakely and others, 2000; McPhee and others, 2014; Wells and others, 2020a) document kilometers of Cenozoic right-lateral offset along the Gales Creek Fault Zone, a major, northwest-striking fault zone forming the boundary between the Tualatin Valley and the Coast Range. The Bureau of Reclamation’s (Reclamation)...
December 29, 2024—InSAR image of Kīlauea deformation associated with ongoing eruption
This map shows recent deformation at Kīlauea over the timeframe of December 17–29, 2024, during which an eruption began within Halemaʻumaʻu crater at the volcano's summit.
Geologic map and structure sections along the southern part of the Bartlett Springs Fault Zone and adjacent areas from Cache Creek to Lake Berryessa, northern Coast Ranges, California
IntroductionLocated in the Coast Ranges of northern California, the Bartlett Springs Fault Zone is the easternmost fault in the San Andreas Fault system in northern California. The fault is a right-lateral, strike-slip structure considered capable of producing an earthquake of moment magnitude 7. The purpose of this mapping is to better characterize the geology and earthquake hazards...
December 23, 2024 — Thermal map of eruption at Kīlauea summit
This thermal map shows lava flows covering the floor of Halemaʻumaʻu crater at the summit of Kīlauea. Fountaining was active in the southwest portion of the caldera, with flows extending east onto the downdropped block. Cooler colors (purple, black) show lower temperatures while hotter colors (orange, yellow) show higher temperatures.
December 23, 2024—Kīlauea summit eruption reference map
This reference map depicts the new Kīlauea summit eruption within Halema‘uma‘u crater on December 23, 2024, constructed using data captured during a USGS Hawaiian Volcano Observatory helicopter overflight at 9:30 a.m.
Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts
The U.S. Geological Survey, in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area being mapped using geophysical and geological data includes the SBNMS and the surrounding region, which totals...