insider.si.edu

Grand Canyon geology / edited by Stanley S. Beus and Michael Morales

Introducing the Grand Canyon / Stanley S. Beus, Michael Morales -- Precambrian crystalline core / R. S. Babcock -- Grand Canyon Supergroup : Unkar group / J. D. Hendricks, G. M. Stevenson -- Grand ...
IFLScience

The "Great Unconformity" And Earth's Missing Billion Years May Have A New Explanation

In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.
insider.si.edu

Geology of the Grand Canyon / contributors, R.S. Babcock [and others]

Geology of the older precambrian rocks of the upper granite gorge of the Grand Canyon / R.S. Babcock, E.H. Brown, and M.D. Clark -- The younger precambrian rocks of the Grand Canyon / Trevor D. Ford ...
The Columbian

‘Oregon’s Grand Canyon’: E-book explores the Lower Owyhee River

The Giles-House copyrighted e-book, “Geology of the Lower Owyhee River, Oregon’s Grand Canyon,” is now online at www.owyheegeology.com as a free downloadable document. An improved second edition will ...
Morning Overview on MSN

Ice-penetrating radar uncovers Greenland’s hidden ‘Grand Canyon’

Scientists mapped a massive subglacial canyon stretching roughly 750 kilometers beneath the Greenland ice sheet, a feature so ...