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epoch
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Which is the smallest division of time on the geologic scale?
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.
What are the units of geologic time from shortest to longest?
The units of geologic time, from shortest to longest, are as follows: epoch, period, era, and eon. An epoch is the smallest unit, representing a subdivision of a period, which is a division of an era. Eras are then grouped into eons, the largest units of geologic time that encompass significant spans of Earth's history.
Middle division of geologic time?
Period.
What word represents the broadest division on a geologic time scale?
Eon is the broadest division on the geologic time scale, representing the longest time span. Eons are further divided into eras, which are then subdivided into periods, epochs, and ages.
What is the third largest division of geologic time?
The third largest division of geologic time is an era. The eras are further divided into periods, epochs, and ages.
What is the name of the largest division of geologic time?
Eon
Which major division on geologic time came first?
Precambrian time
What division in the geologic time scale is the shortest?
The shortest division in the geologic time scale is an Epoch. Epochs are subdivisions of a period and are typically tens of millions of years long.
What is the smallest unit of time on the geologic time scale?
The smallest unit of time on the geologic time scale is an epoch, which typically lasts millions of years. It is used to divide periods into smaller segments based on significant changes in Earth's history.
Is A geologic era is a shorter unit of time than a geologic period?
No, a geologic era is a longer unit of time than a geologic period. Geologic eras are divided into periods, which are further subdivided into epochs. The hierarchy from largest to smallest is era, period, epoch.
How is geologic history divided?
Geologic history is divided into four main eons: Hadean, Archean, Proterozoic, and Phanerozoic. These eons are further divided into eras, periods, and epochs based on significant events and changes in Earth's geology and life forms. Each division represents a distinct time period characterized by specific geologic or biological features.
