What are the time divisions of geologic time?
2006-12-21 06:35:50 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Eon, eras, periods, subperiod, epochs
Overall, you can basically go
Precambrian-Cambrian, Ordivocian, Silurian, Devonian, Carboniferous (Mississippian, Pennsylvanian), Permian
Mesozoic-Triassic, Jurassic, Cretaceous
Tertiary-Paleogene-Paleocene, Eocene, Oligocene
Tertiary-Neogene-Miocene, Pliocene
Quaternary-Pliestocene, Holocene (The epoch in which we live)
2006-12-21 06:43:57 · answer #1 · answered by woaikonglong 3 · 2⤊ 0⤋
The Eons are the largest division and include the Hadian, the Archeon, the Proterozoic and the Phanerozoic. Eons are divided into Eras with the Phanerozoic having three, the Paleozoic, the Mesozoic and the Cenozoic. Eras have Periods. The Paleozoic has the periods of the Cambrian, the Ordovician, the Silurian, the Devonian, the Mississippian, the Pennsylvanian and the Permian. The Mesozoic has the periods of the Triassic, Jurassic and the Cretaceous. The Mesozoic has the periods of the Paleogene and the Neogene. In the Cenozoic the Paleogene Epochs are the Paleocene, the Eocene, the Oligocene. The Neogene Epochs are the Miocene, the Pliocene, the Pleistocene and the Recent.
2006-12-21 19:26:49 · answer #2 · answered by Amphibolite 7 · 0⤊ 0⤋
Take the standard divisions with a pinch of salt.
They were invented on the basis of evolutionary - long age assumptions.
If you assume the rocks are various millions of years old then you have to give them appropriate names.
There is a different set of assumptions that provides a better explanation for the rock formations we see. Namely the global Flood. The link below has many dating evidences for a youthful earth.
2006-12-21 15:41:19 · answer #3 · answered by a Real Truthseeker 7 · 0⤊ 4⤋
Eon
--Era
----Period
------Epoch
--------Stage
2006-12-21 14:45:17 · answer #4 · answered by John R 2 · 2⤊ 1⤋