Thursday, February 16, 2017

Grand Falls are flowing

Photos from Daryl and Karen Austermiller's flight over the falls. Note the black lava damn that caused the Little Colorado River to flow around it and form the falls as it returned to its former river bed.

Harry Allen

Thursday, October 20, 2016

Evidence for an Old Canyon

the Geology Page presented some of the evidence for an Old Canyon


The debate continues,

Harry Allen

Saturday, September 10, 2016

Wednesday, March 23, 2016

Thursday, March 17, 2016

Geo tour of Northern Arizona

The Arizona  Geologic Survey posted a  Geo tour of Northern Arizona -- A virtual Field trip


Check it out

Harry Allen

Tuesday, March 1, 2016

airplane geology

On your next flight --find out the geology of flyover country/

rocks from above

Harry Allen

Sunday, October 25, 2015

Repeat Photography Project

 Look at the comparison of the old and new photos of the glaciers in Glacier N.P.

Repeat Photography Project | Northern Rocky Mountain Science Center (NOROCK)

See the results of Global Warming.

Harry Allen