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.
In geology, an eon is an abritrary length of time having no specific length of age. An eon is the the category encompassing the largest periods of time in geologic history.an eon is an exact period of time . It is the time of a Great Year! That being the time it takes our known solar system to go around the somewhat unknow dark star or brown dwarf that is actually the center star of our solar system 65 billion miles from the center of our bright star the sun. that time is 25,687 years to go around! The answer is 25 687 years equals an eon. Now proceed to wake yourselves up some more and study Switzerland's King
Precambrian time spans from the formation of the Earth, about 4.6 billion years ago, to the beginning of the Phanerozoic Eon, about 541 million years ago. It is the longest eon in Earth's history.
The Proterozoic eon was the third eon in Earth history. It lasted from 2.5 billion years ago to 542 million years ago. Therefor, the Proterozoic was nearly 2 billion years long.Read more: How_long_did_the_proterozoic_era_last
an era uhm NO ^ an eon . (apex)
Phanerozoic is the eon which geologic time scale means visable life.
An eon.
eon
eon
No unless you use an a.r code. The eon ticket was in an event a long time ago.
The opposite meaning for eon is a short period of time which can be calculated or measured.Note: The answer is based on the assumption that the questioner asked the antonym for the word eon meaning immeasurably long period of time.
A long time is considered an eon or millions of years. It is a long period of time that is considered long. This "long time" is truly a long time.
An eon is an indefinitely long period of time, in which there exist noteworthy periods known as eras.
A long period of time is commonly referred to as an era or epoch.
age, era, eon
An 'eon' or an 'era' .
An example of eon in a sentence is ' Dinosaurs existed many eons ago on planet Earth.' The meaning of the word 'eon' is a long time ago.
Precambrian is an informal term for the time before the Cambrian Period, the first period of the Phanerozoic Eon. The Precambrian consists of three eons, the Hadean, the Archean, and the Proterozoic. The Hadean Eon is about 760,000,000 years long. The Archean Eon is about 1,300,000,000 years long. The Proterozoic Eon is about 1,960,000,000 years long This comes to a total of 4,025,000,000 years.