Here is the latest on the Tuff mine from Arizona Geology.
Arizona Geology: Proposal to re-open Kirkland tuff quarry to supply concrete additive stirs up local community
harry Allen
Wednesday, May 20, 2015
Saturday, April 25, 2015
Friday, April 10, 2015
Columbia Gorge Video
Terry sent a link to a 22 min. Video on the development of the Columbia gorge.
Have a look.
Columbia Gorge
Harry Allen
Have a look.
Columbia Gorge
Harry Allen
Saturday, March 14, 2015
Theory on why Denver and Prescott is a Mile High
Here is the word on a new theory why Denver and probably Arizona is at a high elevation.
Mile High Theory
From Terry Steinborn.
Mile High Theory
From Terry Steinborn.
Thursday, March 12, 2015
Sunday, February 15, 2015
Friday, February 13, 2015
- A fascinating stop motion video of a large rockslide -
Great slow motion Landslide from the Landslide Blog.
Val Parghera:- A fascinating stop motion video of a large rockslide - The Landslide Blog - AGU Blogosphere
Harry Allen
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