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The most prominent faults in each state are usually shown on a state's geologic map as black lines. However, many faults are entirely beneath the surface and do not reach ground level.
Sep 27, 2022 · Map showing Quaternary faults in the western U.S. and Pacific Ocean. Note that most faults that can affect residents are either onshore or just offshore. The various colors and line types indicate different ages of the most recent earthquakes on the fault and how well the location of the fault is constrained.
Fault attribute information is presented at the highest resolution available. Information for a fault is either compiled from the USGS Fault and Fold Database at the section scale or from individual fault segment data given to the USGS. For more information, refer to the cooperators listed in the fault attributes or from this list of contributors.
May 15, 2018 · The Bay Area is a confluence of faults. Mouseover this map to see the names of the faults (in red) nearest you. Click on the fault line for a description. Zoom in and click on any recent quake for more specific location data.
Coordinates: 45°N 124°W. Area of the Cascadia subduction zone (left) and a USGS scenario ShakeMap for a M9 event. The Cascadia subduction zone is a 960 km (600 mi) fault at a convergent plate boundary, about 110–160 km (70–100 mi) off the Pacific coast, that stretches from northern Vancouver Island in Canada to Northern California in the ...
Feb 15, 2024 · Draining aquifers is causing land along the East Coast of the United States to sink, making the threat from rising sea levels more acute.
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Aug 14, 2020 · Detailed Description. Topo-bathymetric map of the Cascadia subduction zone. Cascadia megathrust fault (white line); approximate shelf break along 200-m isobath (yellow line); MTJ, Mendocino triple junction.
