What is the longest division in geological time?

Question

Violet Adams · Accepted Answer

The Longest division in geological time is the Precambrian.

The Precambrian lasted from about 4.6 billion to 541 million years ago. The Precambrian era has more recently been split into different eons and eras.
see GSA Geologic Time Scale for more information.

Aaron Anderson · Answer

undefined The longest division in geological time is the eon.

HIX Tutor · Answer

undefined The longest division in geological time is called an eon. An eon is a very big chunk of time that can be divided into smaller parts called eras, periods, and epochs. Let's break it down step by step:

1. Start with the biggest division: an eon. This is the longest unit of time in the geological time scale.
2. Inside an eon, you have smaller divisions called eras. Each era represents a significant period of time with distinct geological events and life forms.
3. Inside each era, there are periods. A period is a smaller division of time within an era and typically represents a few tens of millions of years.
4. Finally, within each period, you have even smaller divisions called epochs. An epoch is the smallest unit of geological time and usually represents a few million years.

To summarize, the geological time scale starts with the biggest division called an eon. Inside an eon, you have eras, which are divided into periods, and each period is further divided into epochs. By studying these divisions, scientists can understand Earth's history and the changes that have occurred over incredibly long periods of time.