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Boulder Magazine Summer 2014
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Great locally focused content, interactive 
features! You can ‘flip’ through the pages 
of our virtual edition, just like the print version, 
right on your screen.



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Great locally focused content, interactive
features! You can ‘flip’ through the pages
of our virtual edition, just like the print version,
right on your screen.



Read the Summer Virtual Edition!

Dating North America's Oldest Petroglyphs, February 27

Dating North America's Oldest Petroglyphs

Thursday February 277 p.m.

University of Colorado Museum of Natural History

Paleontology Hall

Larry Benson, Ph.D.
Adjunct Curator of Anthropology, University of Colorado Museum of Natural History

On the western side of the Winnemucca Lake Basin in northwest Nevada is a carbonate tufa mound which contains the oldest petroglyphs (picture-writing) in North America. According to the archaeological record, Native Americans inhabited this area from 14,800 to 13,200 years ago, and also from between 11,300 and 10,500 years ago, and either group is a candidate for having carved the petroglyphs. In any case, this mound of volcanic rock represents a monumental find to give us more understanding of this era of prehistory. 

Dr. Benson will be presenting an overview of this find and of the research behind the dating of the petroglyphs. 


More information on this research project can be found in these articles:

New CU-Boulder Led Research Effort Dates Oldest Petroglyphs Known in North America

N. America's Oldest Known Petroglyphs Discovered in Nevada


ThePetroglyphSite