Tag Archives: earth science

Book Review: Aerial Geology

23 Jan


I believe this would qualify as a textbook, however it is so beautiful it would also make a great coffee table book.  The content is North America specific.  (Aerial Geology pairs nicely with Tim Marshall’s Prisoners of Geography.)

The photos and narrative reveal what we take for granted in the world.  The earth is best revealed to us in the “birds eye view” from a plane or on foot in our National Parks. (My favorite hiking story is A Walk in the Woods by Bill Bryson on the Appalachian Trail)

100 significant geological sites are expertly described going counterclockwise from Alaska to Maine.  The header on this webpage would pair up with Site 85 for the Blue Ridge Mountains.  The images below are either crinoids or brachiopods dating back 500 million years (The header photo was taken from an overlook made from this rock.)

Friday photos: I Ching No. 52 Keeping still

22 Jan

Treptichnus pedum:  Earliest widespread complex fossil body.

Anthropoda:  Invertebrate, exoskeleton, segmented body.

From the Cambrian period of the Paleozoic Era 500 million years ago.

Stones used to build this wall @ Clinch Mountain overlook. They stay “still”.

I have not studied geology since Mr. West’s 8th grade Earth Science class.  Please advise of corrections required.  Thanks to Wikipedia for the science jargon refresher!

NOTE:  Fossils are not good examples for illustrating I Ching concepts.  I Ching is an elegant text on changes and transitions in life.  The time interval for changes are more aligned with days and seasons than with hundreds of millions of years.  I choose these images because of the detail, movement and abundance of ocean life which was trapped and “kept still”.