Ancient Sea Beds

Gallery: Man & FaunaPosted October 19, 2013410 views4 comments

These pictures of rock formations around Nashville, Tennessee are striking examples of ancient sea beds uplifted through plate tectonics. They occur throughout Tennessee and much of Eastern North America.

The many layers of Calcium Carbonate have been laid down as sedimentary rocks that date from the Ordovician period over 480 million years ago. These rocks contain extensive fossils of ancient fishes that represent the ancestors of all later land vertebrates.

Nikon D800
2013:09:29 14:49:06
18-200mm @ 28mm
1/90 sec, f/6.3
Mode: Av
Metering: Multi-segment
Exp comp: +1/3
ISO: 640
AF mode: AF-C
White balance: AUTO1+2
Hand-held

Comments

4 comments

Comment posted by John Tobias on October 21, 2013 at 7:50 AM

Interesting image. Good info, I wonder how many people go past this type of rock formation without thinking about what it really is? Wish there was some way you could have incorporated a fossil in the photo. Thanks for sharing.

Registered on September 12, 2009, 2120 Posts, 6455 Comments

Comment posted by Carl Battreall on October 21, 2013 at 12:28 PM

I assumed it was a man made structure. Interesting.

Registered on August 29, 2007, 24 Posts, 222 Comments

Comment posted by Barry R. Byrd on October 31, 2013 at 3:11 AM

Love this Sandy- interesting that it outcrops at the surface in TN as I often see it from well cuttings from 6000' in this part of TX

Registered on December 20, 2005, 136 Posts, 970 Comments

Comment posted by Philip Hodgkins on November 6, 2013 at 11:24 AM

Other than the deposits of fossils, these tell the story of eons of change of the surface and subsurface of the Earth. Yet they are only a thin slice of a story!

Registered on July 24, 2006, 2741 Posts, 12349 Comments