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

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

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...