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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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Related Questions

Which Longest geological time unit based on abundance of fossils?

Eons


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

Supereon is the longest classification of time in geology. The Precambrian period is a supereon comprised of the Hadean, Archean, and Proterazoic eons.


What are the four division of geological time?

Cenozoic Mesozoic Paleozoic Precambrian


What does the word eon mean?

the longest division of geological time; an immeasurably long period of time; a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe. Hope it can help you.


What is the longest division of geologic time?

The oldest division of geologic time is the Precambrian, specifically the Archaean Eon from which the oldest rocks and fossils date. (The Hadean Eon preceded the Archaean, but no geologic records date from this time because the Earth was cooling from a molten state.)


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.


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.


What is the largest geological time division?

The Precambrian.


The largest division of geological time is called?

The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.


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.