Which span of geologic time is the longest?

Answer 1

That would be the Eon, which is the primary division of Earth history. The longest eon is the Archeozoic Eon, which was given an incorrect duration by the previous answer (3 billion years long). The Archeozoic Eon began 3.9 Ga (giga-annum or billion years ago) and ended 2.1 Ga for a duration of 1.8 billion years.

Answer 2

I've read your question, but not the answers (nor your replies to the answers) One of the primary problems people have with these issues is failing to see when they create a false dichotomy; either A or B and nothing else... The Bible doesn't say that there has only been one single flood. There is one global deluge, discussed at Genesis 6-9 and mentioned in a few other places... That does NOT mean that there have not been innumerable catastrophic localized floods; or OTHER events which would have had impact of geological formations... ALSO The Bible does not say that Earth is only 6,000 years old. The rocks may be billions of years old. The Bible does not comment on the age of the planet. There is room for innumerable geologic incidents prior to human habitation of the Earth. And regarding there being enough water to cover the globe... take away the water and consider how the seabeds would rebound... given a flatter starting point, the existing water would be more than sufficient to cover the planet; then as the water settles into the lower places, it's weight pushes continents apart... pushes newer ranges upwards... not that these ranges date from 2370 bce, but that they would have been move signifcantly at that point... The Bible DOES date one global flood at 2370 bce HOWEVER, it does NOT date the planet to 4025 bce... likewise, it is a common falacy to identify the "kinds" of Genesis with "species" of today... (more likely identified with "genus" than with "species") in other words, the Bible accounts of the Flood and of Creation allow for (for example) all dog species to have derived from common stock (wolves) and does not require that Noah had two dalmations, two dachshunds, two afghan hounds, two salukis etc... (i.e. the flood waters are muddied by "recent Earth" notions, which are unscriptural... ) I know I have not said much, but I am always concerned that there is an inclination to throw out the Bible, along with those who misrepresent what the Bible says; to throw out the baby with the bathwater, so to speak...

Answer 3

The Archanean, the lower part of the Precambrians (stretching apx 3,000 million years) is the longest period.

Answer 4

the Precambrian time