Geologic Time is a crucial concept to understanding the history of the earth — including the evolution of life. Many different representations of the timeline have been created, and many approaches ...

Understanding the geologic time scale and how to organize Earth’s history into a coherent timeline. MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence, ...

The geological time scale helps us grapple with the vast swaths of time that life has existed on Earth, dividing it into eras, periods, and epochs. With our illustrated version, explore 4.5 ...

The Late Holocene Meghalayan Age, newly-ratified as the most recent unit of the Geologic Time Scale, began at the time when agricultural societies around the world experienced an abrupt and ...

In the mid-1700s—about a century before the birth of geology and the first scientific attempts to determine Earth’s age—an archbishop of the Church of Ireland named James Ussher mapped out ...

When a new time division is approved, as in the case of the Meghalayan, ICS sets the official description and adds that new detail to the geologic time scale. All rocks younger than 4,200 years ...

Vol. 357, No. 1757, Astronomical (Milankovitch) Calibration of the Geological Time-Scale (Jul. 15, 1999), pp. 1735-1759 (25 pages) From the beginning of its history the Royal Society has devoted much ...