We will provide a list of web sites with relevant information. The geologic time scale is divided into eons, eras, periods, epochs, and ages. Our activities, and the time scale for download above, ...

The authors also found evidence of w-shaped flood channels using seismic data and developed computer models to simulate how ...

Prehistoric time line, geologic time scale ... The productive Paleozoic era gave rise to hard-shelled organisms, vertebrates, amphibians, and reptiles. Dinosaurs ruled the Earth in the mighty ...

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There are three general approaches that allow scientists to date geological materials and answer the question: "How old is this fossil?" First, the relative age of a fossil can be determined.

Geology is an applied science that focuses on ... "So the Earth has gone through a number of phases or eras to get to its present state, and we cannot run an experiment in a laboratory that ...

Japanese researchers hope that a new geologic epoch covering the present ... part of the Cenozoic Era, on the time scale of the 4.6-billion-year history of the Earth. However, Paul Crutzen ...