While visiting three separate sites in or near the Minnesota River valley, middle schoolers will question the deposition environment of rock types found and the creation of the valley itself. Students will discover find types of rock...

Search the collection of 35,000 fossiliferous rocks found within the Green River Formation of Colorado and Utah. View some of these 50 million year old insect fossils in a linked slide show.

Interactive photo search of the collection of 35,000 fossiliferous rocks found within the Green River Formation of Colorado and Utah.

Photos, illustrations, 3D graphs and animations are part of this investigation into the geology and landforms of the Grand Canyon. Learn detailed information on the formation of the canyon, the rock layers, and the prehistoric life that...

The Great Smoky Mountain National Park of North Carolina and Tennessee includes 16 mountains over 6,000 feet (about 2,000 m) high, making this generally the highest region in North America east of the Mississippi River. Gatlinburg is a...

This resource gives short descriptions of how sedimentary deposition occurs in rivers, lakes, river mouths, coral reefs, glaciers, arid environments, and tropical environments.

On January 3, 1983, fountains of lava erupted from a fissure on Hawaii's Kilauea volcano, sending rivers of molten rock flowing towards the sea. Nearly 16 years later, the eruption continues with no sign of letting up. This site provides...