1. The Eras of Geologic Time
... This scale, comprised of billions and trillions of years is called the geologic time. In the mid-17th century an Irish clergyman, Bishop James Usher, added the years in the biblical genealogies and concluded that the Earth was created in 4004 BC. This idea persisted for a long while, although the 18th-century French scientist Georges Louis Leclerc, Comte de Buffon, reasoned that ... the Earth cooled from an originally molten body and that this would have required at least 75,000 years. Buffon had to recant, but development of the principle of uniformitarianism in the late 1700s and earl...
- Word Count: 1841
- Approx Pages: 7
- Grade Level: Undergraduate