1. The Eras of Geologic Time
How then do scientists reckon geologic time, and why do they believe the Earth is so old? ... This scale, comprised of billions and trillions of years is called the geologic time. ... In the meantime, an accurate, relative geologic time scale had been developed, which placed the main events of geologic history in their proper sequence. ... Each geologic time chart is different. ... The Mesozoic era marks a major division of geologic time from sixty five to two hundred and twenty five million years ago and is put into three geologic time periods: Triassic, Jurassic, and Cretaceous. ...
- Word Count: 1841
- Approx Pages: 7
- Grade Level: Undergraduate