Images

This is a photo of a fish in Ross Lake, WA called the Redside Shiner. Ecologists at the Western Fisheries Research Center are studying this fish and the food web in Ross Lake.

This is a photo of Ross Dam as viewed from the boat. This photo was taken by fisheries scientists from the USGS Western Fisheries Research Center.

This is a photo of scientist, Marshal Hoy, holding a bull trout in Ross Lake. The USGS Western Fisheries Research Center does food web studies in Ross Lake to better understand the ecology and habitat for salmon in the area.

This is a photo of scientists, Ben Jensen and Shelley Johnson, collecting tissue samples from a rainbow trout on Ross Lake. The USGS Western Fisheries Research Center does work on Ross Lake to understand the food web and ecology for salmon.

These are two USGS Western Fisheries Research Center scientists, Carl Ostberg and Jeff Duda (from left to right), sitting on a fallen tree in Skagit, WA. These scientists study critical fish, like salmon, in the Ross Dam reservoir and tributaries.

Isolated aluminum specimen from the USGS mineral collection. High-definition image showing metallic texture and matte surface.

Isolated USGS mineral specimen of vesicular basalt. High-definition image showing porous side texture and dark volcanic color.

Isolated beryllium specimen from the USGS mineral collection. High-definition image showing metallic luster and fine-grained texture.

Isolated beryllium ore specimen showing coarse texture and light coloration. High-definition USGS mineral image.

High-definition image of calcite and sphalerite specimen from the USGS mineral collection. Image shows layered structure and metallic inclusions.

Isolated clear calcite specimen from the USGS mineral collection. High-definition image showing transparent crystal structure.

USGS mineral specimen featuring calcite with fluorite inclusions. High-definition image showing color contrast and crystal texture.

Group of calcite specimens from the USGS mineral collection. High-definition image showing varied textures and crystal forms.

High-definition image of multiple calcite specimens showing diverse crystal structures and color variations

Isolated calcite marble specimen from the USGS mineral collection. High-definition image showing fine-grained texture and white coloration.

High-definition image of calcite marble specimen with smooth surface and subtle veining.

USGS mineral specimen of calcite with sphalerite inclusions. High-definition image showing crystal structure and metallic highlights.

Isolated travertine specimen from the USGS mineral collection. High-definition image showing banded texture and earthy color.

Isolated chalcopyrite specimen from the USGS mineral collection. High-definition image showing metallic luster and granular texture.

High-definition image of chalcopyrite specimen showing brassy color and crystal structure.

High-definition image of chalcopyrite, pentlandite,  and pyrrhotite specimen showing metallic luster and granular structure.