Multiple lava flows, columnar jointing Yellowstone National Park
Multiple lava flows, columnar jointing Yellowstone National Park
Close-up of blocky lava flow, San Isobel, Mexico
Close-up of blocky lava flow, San Isobel, Mexico
Paricutin volcano; ash in foreground, Mexico
Paricutin volcano; ash in foreground, Mexico
Lava flow that buried a church. Paricutin, Mexico
Lava flow that buried a church. Paricutin, Mexico
Cross-stratification in sandstone near Kanab, Utah
Cross-stratification in sandstone near Kanab, Utah
Horizontal bedding in Grand Canyon
Horizontal bedding in Grand Canyon
Shoreline erosion
Shoreline erosion
F.H. Edmunds fonds
F.H. Edmunds fonds
Spheroidal Weathering - Colorado
Close-up of crevassses on Pasterzen Glacier, Austria
Close-up of crevassses on Pasterzen Glacier, Austria
Meltwater stream flowing into crevasse - Pasterzen Glacier, Austria
Meltwater stream flowing into crevasse - Pasterzen Glacier, Austria
Debris cones - Pasterzen Glacier, Austria
Debris cones - Pasterzen Glacier, Austria
Large erratic used as rubstone by animals
Large erratic used as rubstone by animals
Large erratic used as rubstone by animals
Large erratic used as rubstone by animals
Ice contact stratified drift in esker near Wawota, Sask
Ice contact stratified drift in esker near Wawota, Sask
