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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.)
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThe longest unit in geological time is the "supereon," of which there have been 2 in the Earth's history.
Supereons are divided into the more widely used "eon" in geochronology. There have been 4 eons, in Earth's history, and they span a half a billion years or more in length.
Wiki User
∙ 6y agoThe longest division in geologic time is PRECAMBRIAN TIME!
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Which division of geological time was the longest?
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.
Longest segments of geologic time?
Eras
What division in the geologic time scale is the shortest?
epoch
How do you order the geologic time intervals to longest to shortest?
The order of the geologic time intervals is Eon, Era, Period, Epoch.
What is the next smaller division of geologic time after era?
After an era, the next smallest division of time would be an epoch. An epoch is equal to around 10,000,000 years, where as an era is 100,000,000 years.
Which division of geological time was the longest?
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.
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 word represents the broadest division on a geologic time scale?
Precambrian is the largest division of the geologic time scale.
Longest segments of geologic time?
Eras
Middle division of geologic time?
Period.
What is the smallest division of geologic what time?
epoch
The largerest division of time on the geologic time scale is?
Eon.
What is the largest division of time on geologic time scale?
Eon
What is the name of the largest division of geologic time?
Eon
Which is the smallest division of time on the geologic scale?
Epoch
What is the third largest division of geologic time?
period.
What division in the geologic time scale is the shortest?
epoch
