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 ...

A team of geologists coming from New Zealand, New Caledonia, Australia, the U.S., Denmark and Tasmania compiled a new geological map using a combination of rock samples recovered from the sea and ...

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.

The map was compiled by the National Institute ... It has been difficult until now to get an accurate grasp of the geological layers in urban areas such as Tokyo where development has progressed ...