In general usage, an Eon is a very long period of time. Geologists refer to a Phanerozoic Eon which is about 550 million years long and covers the period of time during which animals with hard shells that fossilize well have been abundant. Less frequently, they refer to a Precambrian Eon that covers the four billion years of Earth history prior to the appearance of hardshelled animals.
... of it is land and none of the area is covered with water.
Demographics
As of the census of 2000, there are 5,641 people, 1,755 households, and 1,463 families residing in ...