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The geologic time scale that represents the longest time span is the eon. It is a unit of time that is equal to a billion years.

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βˆ™ 9y ago
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βˆ™ 6mo ago

The Phanerozoic Eon is the longest division of geological time, spanning approximately the last 541 million years and continuing to the present day. It is further divided into three eras: the Paleozoic, Mesozoic, and Cenozoic eras.

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βˆ™ 15y ago

The Precambrian is the longest eon, which is the largest division of geologic time.

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βˆ™ 13y ago

Eon

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Q: Which division of geological time was the longest?
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Related questions

Which Longest geological time unit based on abundance of fossils?

Eons


What is the longest division of time on the geologic scale?

The longest division of time on the geologic scale is an eon, which is divided into eras, then periods, and epochs. Eons represent billions of years of time.


What are the four division of geological time?

Cenozoic Mesozoic Paleozoic Precambrian


What does the word eon mean?

An eon is a long and indefinite period of time, often used in a geological or cosmological context to describe vast stretches of time. It is a term used to denote a specific era or era subdivision in the geological time scale.


What is the longest division of geologic time?

The longest division of geologic time is an eon. Eons are divided into eras, which are further subdivided into periods, epochs, and ages. The current eon we are in is the Phanerozoic Eon, which began around 541 million years ago.


What is the largest division of time on geologic time scale?

Eon


Is The Paleozoic Era the longest time period in the history of Earth.?

The Precambrian is actually the longest block (division) of time in earth geological history. But the Paleozoic era is the longest of the three "eras". The paleozoic era started about 550 million years ago and is marked by the appearance of abundant invertebrate life in the oceans. The paleozoic era ended about 225 million years ago with the forming of the supercontinent Pangaea.


What is the largest subdivision of geologic time?

The longest in geological time is an Eon eg. Archeozoic Eon . Edit: there is also the supereon, which is usually composed of 2-3 eons.


What is the largest geological time division?

The Precambrian.


How long is an eon of time?

The longest division of geologic time, containing two or more eras.Answer:Although usually taken to mean just a very long time, astronomy and geology use eon to mean a billion years.


The largest division of geological time is called?

The largest division of geological time is called an eon. Eons are subdivided into eras, which are further divided into periods, epochs, and ages.


What is the longest time period in the history of earth?

Geological time spans are broken down in different ways depending on the system used. See the link below.