geology

KNAU and Arizona News
5:00 am
Tue July 28, 2015

Study Defends Young Age of the Grand Canyon

The view from the south rim of the Grand Canyon.
Credit Melissa Sevigny

New research supports the long-held hypothesis that the Grand Canyon is as young as six million years. That’s what geologists originally believed before a different study claimed it was tens of millions of years older.

The study was conducted by geologists at Arizona State University. It compares the western Grand Canyon with the Grand Wash Cliffs. It found that the canyon is steeper than the cliffs, which suggests erosion started more recently.

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KNAU and Arizona News
5:00 am
Thu July 2, 2015

Geology Complicates Search for Groundwater in Williams

The view from the Sweetwater drilling platform, looking toward Interstate 40 and the City of Williams.
Credit Melissa Sevigny

The City of Williams west of Flagstaff is in the process of drilling a new well. Like many places in the Southwest, it’s facing drought and rising demand. But there’s another reason water supply is a challenge in Williams.  A fluke of geology has forced the city to take the lead in the hunt for groundwater on the Colorado Plateau.    

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KNAU and Arizona News
1:56 pm
Thu June 4, 2015

Sunset Crater Still 'Extinct,' Despite Internet Rumors

Sunset Crater Volcano, aerial news.
Credit National Park Service

Rumors of a steam plume coming from Sunset Crater near Flagstaff have been making a buzz on the Internet. But as Arizona Public Radio’s Melissa Sevigny reports, officials with the national monument say there’s no sign of geologic activity.

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KNAU and Arizona News
7:14 am
Thu November 28, 2013

Brain Food: iPads Become New Field Tool For NAU Geology Students

NAU geologist and lecturer, Lisa Skinner
Credit Bonnie Stevens/KNAU

It's estimated that by the new year, more than 60 million Americans will be using iPads. NAU geologist Lisa Skinner is already using them in the field with her students as a geologist time machine of sorts.

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KNAU and Arizona News
12:32 pm
Thu November 15, 2012

Carving Grand Canyon: New Theories About An Old Canyon

Wayne Ranney

Flagstaff geologist Wayne Ranney discusses some new theories of how - and when - the Grand Canyon formed. The second edition of Ranney's book, Carving Grand Canyon, was recently released.

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