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, ...

Geologic Timescale Explain that scientists also like to sort events in the order they have happened. Show the geologic timeline OK, that looks overwhelming at first! Let's break it down. First, see ...

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 ...