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Map showing regional tectonic setting

Map showing regional tectonic setting

Map showing regional tectonic setting of area from Sacramento Valley to California-Nevada border.

Sketch map of Shasta Valley debris-avalanche deposit (shaded). ...

Sketch map of Shasta Valley debris-avalanche deposit (shaded).

Heavy dashed lines show approximate margins of Shasta Valley and base of Mount Shasta volcano; dotted line indicates western edge of Quaternary basalt.

This dark image shows changes in pixels in a video image over 10 minutes.

Santa Cruz Main Beach video camera variance image

Video camera variance image at Main Beach in Santa Cruz, California, looking eastward. Learn more about the cameras and how we're using them to study coastal change.

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Black and white outline of snake coiled up on a duck nest, with its mouth around an egg
June 20, 2019

Coloring Sheet: Gopher Snake Attempts to Eat a Duck Egg

A PDF copy of a coloring sheet showing a gopher snake attempting to eat a duck egg in a nest, based on an image taken in Suisun Marsh, California.

Image of the front page of Sound Waves, Jan. - Feb. 2012
March 22, 2019

Sound Waves, Jan. - Feb. 2012

The stories in the Jan. - Feb. 2012 issue of Sound Waves:

https://archive.usgs.gov/archive/sites/soundwaves.usgs.gov/2012/02/

Arctic Expedition Reaches 88.5 Degrees North Latitude—Fourth Joint U.S.-Canada Survey for Purpose of Delineating Extended

Whiskeytown National Recreation Area Post-fire Recovery

A landscape at Whiskeytown National Recreation Area 2 months and 9 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.

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Lava tube cave at Lava Beds National Monument, Medicine Lake Volcan...

Lava tube cave: Lava Beds National Monument, Medicine Lake Volcano, CA

The horizontal traces near the floor of the cave wall are remnants of high stands of lava as it drained away during the final stages of lava-flow activity within the tube. The drip structures from the ceiling were formed as the top of the cave remelted and dripped downward due to the high temperatures within the tube system.