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Larry D. Agenbroad
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BIOGRAPHY

Professor of Geology; Director, Quaternary Studies Program, Northern Arizona University, Flagstaff. Author of The Hudson-Meng Site: An Alberta Bison Kill in the Nebraska High Plains.

Primary Contributions (1)
A detailed geologic time scale chart displaying Earth's history from the Hadean Eon over 4.5 billion years ago to the present, organized by eons, eras, periods, epochs, and ages with color-coded columns and corresponding dates in millions of years.
Holocene Epoch, younger of the two formally recognized epochs that constitute the Quaternary Period and the latest interval of geologic time, covering approximately the last 11,700 years of Earth’s history. The sediments of the Holocene, both continental and marine, cover the largest area of the…
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