Slide 1Geologic History Slide 2 Geologic Time Scale Slide 3 Chart of Earths history showing events, time units, & ages Era: the four largest subdivisions of the geologic…
Slide 1Geologic Time Slide 2 The geologic time scale is based upon rock and fossil evidence. It is broken into the following divisions from largest to smallest: eon, era,…
Slide 1 Chapter 21 Fossils & the Rock Records Produced by S. Koziol 11-4-2014 Slide 2 21.1 The Geological Time Scale Objectives Describe the geological time scale Distinguish…
Slide 1 Slide 2 IT IS ESTIMATED THAT THE EARTH FORMED ALONG WITH THE SOLAR SYSTEM 4.6 BILLION YEARS AGO (4,600 MYA) GEOLOGIC TIME SCALE A SUMMARY OF THE MAJOR EVENTS IN EARTH’S…
Slide 1 Slide 2 Geologists estimate that the earth is about 4.6 billion years old!!! 4,600,000,000 years How are we able to estimate something like this? Slide 3 RELATIVE…
29.2 RELATIVE TIME PAST MISCONCEPTIONS Before the 1700âs, scientist thought the Earth was ~ 6000 y.o. Given geologic processes take much longer to take shape they were able…