The Scripps Institution of Oceanography dredged rocks collection consists of more than 4,000 dredge hauls and related archive materials resulting from published research, donated by investigators ...

Home to the greatest collection of hoodoos—spire-shaped sedimentary rock formations—anywhere in the world, the park is made ...

There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such ...

"The Tonto Group of Grand Canyon holds a treasure trove of sedimentary layers and fossils ... the "Tonto Group", a 0.3-mile-thick collection of five rock formations that are exposed along the ...