Permian Extinction

It was ugly at the end of the Permian- not a good place to time travel to.

Volcanoes Ignite Coal Fires that Caused the Permian Extinction

Harry Allen

Geologic Map of the Chino Valley North 7½' Quadrangle, Yavapai County, Arizona | AZGS Document Repository

Here is a link to the new Chino valley Quad Geologic map. You can download the .pdf file right to your computer.

Geologic Map of the Chino Valley North 7½' Quadrangle, Yavapai County, Arizona | AZGS Document Repository

Harry Allen

Magnitude 3.5 -near Sedona

Here is a link to the 3.5 earthquake near Sedona. If you felt the earth move after the football game -- this gives all the details:


Magnitude 3.5 - ARIZONA

It seems to be from one of the faults in the Verde Valley Grabben.

Harry Allen

Arizona from Space Satellite Posters

The State Geologic Survey has some great Landsat Satellite posters of The Grand Canyon,Flagstaff,and Tucson. Cost is $5.oo per poster. Set of Seven for $28.00.

AZGS | Arizona Geology Satellite Poster Sale

Harry Allen