Understanding geology is critical to studying paleontology because fossils are preserved in ... Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers ...

Smith's colourful and sophisticated geological map was based on his astute observation that rock layers (strata) could be identified by the fossils they contain. He noticed that the layers always ...

John Wesley Powell A professor of geology at Illinois Wesleyan, John Wesley Powell had more than just a passing interest in the layers upon layers of rocks exposed by the Colorado River.

Illustrates how geology is expressed in the landscape. Images include deposition of layers and erosion into a canyon, erosion of layers into a mesa and a buttes, tilted layers and their ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic ...

Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity. Our planet's interior is much too deep and hot to ...

Menu Local Geology History, Resources, and Facilities Geologic History of Southwestern Ohio ... The great number of fossils shows the nature of life in benthic communities in the Ordovician ocean. The ...

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

Mysterious mounds on Mars were formed by ancient water, says a British study. Thousands of mounds and hills in the Red Planet ...