Understanding the geologic time scale and how to organize Earth’s history into a coherent timeline. MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence, ...

Reston, VA – The U.S. Geological Survey (USGS) and the Association of American State Geologists (AASG) announced that they have developed an updated geologic time scale and color scheme for use ...

“A myriad of geological signals reflect this fact.” The Anthropocene issue has polarized scientists in a way that few issues in the history of the geological time scale ever have.

- Understanding the geologic time scale and how to organize Earth’s history into a coherent timeline. MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence ...