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 ...

The Geologic Time Scale 2012, or GTS2012, is the latest understanding of Earth's history, ... providing a complete stratigraphy of all periods and stages with regional applications.

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, ...

New Astronomical Results Refine The Geological Time Scale Date: November 3, 2004 Source: Journal Astronomy & Astrophysics Summary: A team led by Jacques Laskar from the Institut de Mécanique ...

There are approximately a hundred small-scale geologic time units, called ages, that make up the larger units like the Jurassic Period (which contains 11 ages arranged in 3 epochs). The Turonian Age ...

The sum of Earth’s history, divided up into these different sections, is called the Geologic Time Scale and geologists have been defining and refining it for about 150 years (Geologic Society of ...

"Despite its rejection as a formal unit of the Geologic Time Scale, Anthropocene will nevertheless continue to be used not only by Earth and environmental scientists, but also by social scientists ...

Dividing up deep time The geologic time scale provides the official framework for our understanding of Earth’s 4.5 billion-year history.

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 ...

The geologic time scale divides Earth’s 4.6 billion-year story into grandly named chapters. Like nesting dolls, the chapters contain sub-chapters, which themselves contain sub-sub-chapters.

This involves creating timelines of geological events and understanding the sequence of changes. Middle School (6-8) MS-ESS1-4: Construct a scientific explanation based on evidence from rock strata ...