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, ...

Time is fundamental to Earth science. Geochronology data are essential for determining the timing, duration, and rates of Earth processes and events, and are increasingly required to perform modern, ...

The geological time scale ... The scale functions as a massive calendar, dividing the history of life into eras, periods, and epochs based on fossil evidence. In this feature, explore the history ...

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact ...

Earth's 4.5 billion year geological history is full of death and rebirth, mass extinctions and explosions of biodiversity, with different periods often marked by cataclysmic changes that radically ...

That seemingly simple question has sparked a new battle between geologists and environmental advocates over what to call the time ... period we live in. According to the International Union of ...

I like to use a meter stick and be very intentional with my spacing to model time as a scale. I also avoid using the far right of the space to infer time existed before their lives. A Timescale is a ...