Pumice Rounded by Erosion

Pumice Rounded by Erosion. This piece was found in California. It is about 1.5 inches across. Pumice is an igneous rock having lots of silica and

Geoscience Research Institute Rapid Erosion at Mount St. Helens

Ignimbrite - Wikipedia

The Most Breathtaking Rock Formations in America

Polished thin section scan of subrounded pumice clasts from

Geology Word of the Week: O is for Outcrop - Georneys - AGU

Obsidian Mahogany 2.5 inches x 2.5 inches x 2 inches. This peice has one face showing the mahogany color with black stripes while the rest is

Obsidian Mahogany 02

Erosion, transport and segregation of pumice and lithic clasts in

Igneous Rocks - Geology (U.S. National Park Service)

93 Volcanic Pumice Stone Stock Photos, High-Res Pictures, and

Close view of the resedimented pumiceous mass-flow deposit in Fig

Pumice beach hi-res stock photography and images - Alamy

3.5 Igneous Rocks – Dynamic Planet: Exploring Geological Disasters