A Timescale is a scale used to represent periods of time ... An Index fossil is any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic ...

The geologic time scale provides the official framework for our understanding of Earth’s 4.5 billion-year history. Geologists break down our planet’s history into eons, eras, periods ...

As far as the geological community is concerned, the Earth has not entered a new phase ... Epoch as a formal unit of the Geologic Time Scale is approved." The vote in question, the results of ...

The Earth is no ... This huge geological event resulted in a massive change in the age of rocks, as older layers were eroded and replaced by younger sediment. The scale of this erosion is whooping ...

Climate, tectonics and time combine to create powerful forces that craft the face of our planet. Add the gradual sculpting of the Earth's surface ... But our geological models have only provided ...

For the last seven decades, Earth has been operating in unprecedented ... "While it may not have been formally accepted onto the geological time scale, the Anthropocene is real and its effects ...

A panel of experts has spent more than a decade deliberating on how, and whether, to mark a momentous new epoch in geologic ... time unit, one characterized by human-induced, planetary-scale ...

But the Earth is special. Thanks to plate tectonics, rocks from the deep interior and the surface trade places all the time, substantially expanding our planet’s unusual geological repertoire.

Geologic Time is a crucial concept to understanding the history of the earth—including the evolution of life ... We will provide a list of web sites with relevant information. The geologic time scale ...

Over geological time ... the key elements of Earth’s sediment transport, from catchment dynamics depicting river networks over time to the slow changes of large-scale sedimentary basins.