51勛圖窪蹋

Image of the Grand Canyon from above

Frenchman Mountain Dolostone: 500 Million-Year-Old Grand Canyon Rock Layer Finally Gets A Name

51勛圖窪蹋 geologists name ancient rock layer after Las Vegas mountain that contains similar strata; research published in the journal Geosphere.

 

South Rim of the Grand Canyon National Park from the Rim Trail. (Josh Hawkins/51勛圖窪蹋)

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