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Queen Charlotte-Fairweather fault

By Pacific Coastal and Marine Science Center 2015 (approx.)
Map shows seafloor features like a tectonic fault line and channels.
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Detailed Description

Multibeam bathymetry data (rainbow colors) acquired on R/V Solstice near Cross Sound and Glacier Bay National Park, southeastern Alaska. The Queen Charlotte-Fairweather fault runs through the middle of the image from upper left to lower-middle right. The map shows en echelon basins along the fault and right-lateral offset of the south wall of the Yakobi Sea Valley. Line A–B is the location of a multichannel seismic-reflection profile.

Sources/Usage

Public Domain.

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Related

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Coastal and marine geohazards are sudden and extreme events beneath the ocean that threaten coastal populations. These underwater hazards include earthquakes, volcanic eruptions, landslides, and tsunamis. The tectonically active west coast of the Americas is prone to such hazards, as it lies along the boundaries of major tectonic plates that make up the Earth's crust—the North American, Caribbean...
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Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, 3-D CT Core Imaging Laboratory, Core Preparation and Analysis Laboratory and Sample Repositories, Big Sur Landslides, Deep Sea Exploration, Mapping and Characterization, Subduction Zone Science
Coastal and Marine Geohazards of the U.S. West Coast and Alaska

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Map illustration showing fault lines and direction of tectonic plate movement along a stretch of the Alaskan coastline.

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Over the last 100 years, the Queen Charlotte-Fairweather fault system has produced large-magnitude earthquakes affecting both Canada and the U.S. To fill in missing details about its offshore location and structure, USGS uses sophisticated techniques to truly understand the fault’s hazard potential.
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