Reston, VA – The U.S. Geological Survey (USGS) and the Association of American State Geologists (AASG) announced that they have developed an updated geologic time scale and color scheme for use in ...

Jurassic, Pleistocene, Precambrian. The named times in Earth’s history might inspire mental images of dinosaurs, trilobites, or other enigmatic animals unlike anything in our modern world. Labels like ...

What are some events that all of us have had in our lives? Ask the class "What are some events that all of us have had in our lives?" Make a list of 5 or 6 things on the board. Let’s organize these!

The Geologic Time Scale depends on two aspects of the dating of the records. First, the sedimentary records that are collected worldwide must be linked together through significant events, such as the ...

Reserachers tackle the hot topic of whether to define a new 'Anthropocene' epoch as a formal unit of the geologic time scale. In the March-April issue of GSA Today, Stanley Finney (California State ...

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 critical ...

After years of debate, the International Chronostratigraphic Chart has officially been revised. What does that mean, exactly? Our current point in Earth's geological timeline has been updated so that ...

Humans have altered the planet so much that we’ve created a new geological age–the Anthropocene. Millennia from now, this is how scientists will learn about what we did. Nuclear particles, changes in ...

Steve Petsch receives funding from National Science Foundation. Jurassic, Pleistocene, Precambrian. The named times in Earth’s history might inspire mental images of dinosaurs, trilobites or other ...

Such massive planetary changes did not begin all at once at any single place or time. That’s why it was controversial when, after over a decade of study and debate, an international committee of ...

Many boundaries between geologic eras are marked by physical golden spikes. This one, in South Australia, marks the end of the Ediacaran period, 635 million years ago. Bahudhara/Wikimedia Commons - CC ...