insider.si.edu

A geologic time scale 2004 / edited by Felix M. Gradstein, James G. Ogg, and Alan G. Smith

Introduction / F.M. Gradstein -- Chronostratigraphy : linking time and rock / F.M. Gradstein, J.G. Ogg and A.G. Smith -- Biostratigraphy : time scales from graphic ...
New Hampshire Public Radio

Outside/Inbox: How do historians decide how to categorize chunks of time?

Every other Friday, the Outside/In team answers a listener question about the natural world. This week’s question comes from Emily in Washington, DC. Crawford Lake in Milton, Ontario. The answer to ...
Purdue University

Geologic Time Scale

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!
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⌛ Earth's deep time may be... fractal

Geological time, generally considered as a system of eras, periods and epochs materialized in rock strata, might actually follow a simple and unifying model. Indeed, a new study led by physicist Shaun ...