GIS Data
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Bedrock geologic map of the Woodstock quadrangle, Grafton County, New Hampshire Bedrock geologic map of the Woodstock quadrangle, Grafton County, New Hampshire
The bedrock geology of the Woodstock 7.5-minute quadrangle consists of highly deformed metasedimentary rocks of the Central Maine trough, including the Silurian Rangeley and Perry Mountain Formations and the Devonian Littleton Formation. The central, northern, and eastern parts of the quadrangle are underlain by the oldest rocks in the area, the Rangeley Formation. In the southwest and...
Field observations and logs from the Rose Hip trench exposure across a north-facing scarp within the Seattle Fault Zone, southern Bainbridge Island, Washington Field observations and logs from the Rose Hip trench exposure across a north-facing scarp within the Seattle Fault Zone, southern Bainbridge Island, Washington
The Seattle Fault Zone is an approximately 70-km-long, east-west-trending zone of south-dipping blind reverse faults within the Puget lowland region in Washington. Because of the proximity, the Seattle Fault Zone poses a significant earthquake hazard to the Puget sound and Seattle metropolitan regions. We present preliminary mapping and trench-site information from a paleoseismic...
Colored shaded relief bathymetry and acoustic backscatter of Ozette Lake, Washington Colored shaded relief bathymetry and acoustic backscatter of Ozette Lake, Washington
Offshore of the Pacific Northwest of the United States is the Cascadia Subduction Zone, a 1,000-kilometer-long tectonic boundary defined by a large fault, called a megathrust, that extends from the Mendocino Junction off northern California to the Nootka Fracture Zone off Vancouver Island, Canada (U.S. Geological Survey, 2023). The Juan de Fuca and Gorda oceanic plates to the west of...
June 6, 2024—InSAR image of deformation during Kīlauea Southwest Rift Zone eruption June 6, 2024—InSAR image of deformation during Kīlauea Southwest Rift Zone eruption
This map shows recent deformation spanning the recent eruption at Kīlauea.
June 6, 2024 — Kīlauea Southwest Rift Zone eruption June 6, 2024 — Kīlauea Southwest Rift Zone eruption
This reference map depicts the June 3, 2024, eruption along Kīlauea's Southwest Rift Zone.
June 4, 2024 — Thermal maps of Kīlauea Southwest Rift Zone eruption June 4, 2024 — Thermal maps of Kīlauea Southwest Rift Zone eruption
These two thermal maps were constructed from images captured during USGS Hawaiian Volcano Observatory helicopter overflights on June 3, 2024, at 6:00 a.m. HST (left) and June 4, 2024, at 12:00 p.m. HST (right).