International Stratigraphic Chart

The International Stratigraphic Chart is a detailed timeline that geologists use to organize Earth's history into different rock layers and geological periods. It helps identify when major events, like the appearance of certain fossils or mass extinctions, occurred over millions of years. The chart shows the sequence of eras, periods, and epochs, providing a global reference for understanding the Earth's past. It's essential for scientists to communicate and compare geological findings worldwide, ensuring a consistent method for studying Earth's deep history.