2007-06-22 03:29:49 · 7 answers · asked by Oz 7 in Science & Mathematics ➔ Earth Sciences & Geology
The geologic time scale is a tool that geologists use. It's merely the usage of fossils assemblages found in rocks, based upon subdivides in geologic time. As an example, on the basis of the fossils found, a geologist can say, take a section of rock in the lower portion of the Grand Canyon and determine that these rocks in the lower horizontal layered portion to be of Cambrian aged. It is a tremendous tool in unifying physical and biological sciences, in that it helps to work out evolutionary chronology.
The geologic time scale, representing and extensive fossil record, consists of 3 eras, which are subdivided into perios, which are divided into epochs.
I see that others have included links to one, but I wanted to tell you what it actually is, I hope that this helps.
2007-06-22 03:50:01 · answer #1 · answered by ? 6 · 2⤊ 0⤋
The geologic time scale is a series of events broken up into segments of millions of years- normally they are named and broken up according to different occurances eg the first time frame is called the hadean eon which was kinda like hades/hell.... the earth was hot, there was lots of volatile and poisonous gases in the atmosphere etc..... i could be here for ever explaining it, if you want a full description go to the link.
2007-06-22 03:36:47 · answer #2 · answered by Lisa I 2 · 0⤊ 0⤋
Many geologic time sessions are named for the placement the place they have been first researched or the placement the place they're best uncovered. The Cambrian era, case in point, replaced into named for the element of Cambria interior the united kingdom.
2016-12-08 16:21:27 · answer #3 · answered by ? 4 · 0⤊ 0⤋
A history of the earth & the timing/relationships between major events that have occured on it..
2007-06-22 03:34:38 · answer #4 · answered by SamB12 3 · 0⤊ 0⤋
it has all the events that occured in history. like earliest trilobites, dinosaurs, and their extinction time.
http://en.wikipedia.org/wiki/geologic_ti...
2007-06-22 04:12:33 · answer #5 · answered by ♥ F@$H!0N ♥ 5 · 0⤊ 0⤋
It is used when one is attempting to do anything that involves the government. Like the boobs at the DMV, etc. nm
2007-06-22 03:50:13 · answer #6 · answered by Knick Knox 7 · 1⤊ 2⤋
www.geo.ucalgary.ca/~macrae/timescale/...
www.enchantedlearning.com/subjects/Geo...
en.wikipedia.org/wiki/Geologic_timesca...
2007-06-22 03:37:45 · answer #7 · answered by gaby 5 · 0⤊ 0⤋