Everything has its pecking order, and geology is no exception. The cocks of the rocks are the big, swaggering periods of the past that fill books, television programmes and natural-history museums.

MILLIONS of people can name a single geologic period, the Jurassic. Nit-pickers did argue that the famous film should have been called Cretaceous Park, resting their case on the identification of the ...

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Earth’s history is divided up into different geological wedges of time, wedges we like to call things like epochs, periods, and eons. They’re defined by events that shaped the planet (think big ...

South Korea has completed its national geologic map, a project capturing hundreds of millions of years of the peninsula's ...