Geological time

Geological time

The geological timescale and the processes that happen occur over a very long period of time, often millions of years. Each geological period describes a particular, major event that is thought to have happened at that time.

Geological time

The Earth is thought to be 4,600 million years old. Life is believed to have become dominant on earth 542 million years ago.

Chart showing the major geological periods

Chart showing the major geological periods

 

The geological periods relate to events which have happened in the Earth’s history. For example, during the carboniferous period there were tropical weather conditions in the UK and coal and limestone were formed.

The most recent period in geological time is called the quaternary, when the Ice Age occurred.

Rocks are formed at different times, and are a result of the environment present during that time. For example, chalk is formed in the cretaceous period, as this is when warm tropical seas were present around the shores of the UK.

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s