|TN Naturalist @ Ijams class of 2014 at exposed outcropping of |
Chapman Ridge formation
The TN Naturalist @ Ijams class of 2014 got down to the rock and the roll of the Ridge and Valley, our geologic province.
After we went over the basics of geology indoors, the class walked from the west end of Ijams to the east, covering four different rock formations along the way (all sedimentary, as it is everywhere in the valley). The four formations of exposed bedrock at Ijams are Ottosee (shale), Chapman Ridge (sandstone), Holston (crystalline limestone) and Lenior (silty limestone).
The TN Naturalist Program @ Ijams is 20 hours of naturalist classes covering a wide range of topics plus 20 hours of volunteer work.
The classes begin in March and wrap up in November. We are already taking registration for 2015. To register call Peg at (865) 577-4717, ext. 114. (She needs your name, phone number and email address.)
- Stephen Lyn Bales.
|Chapman Ridge formation originally deposited roughly 450 million years ago.|
|Cave on boardwalk illustrates karst topography of caves and sinkholes|
|The geologic fold and faulting occurred roughly 250 million years ago|
|Chunk of crystalline limestone, part of the Holston Formation|
|Chunk of shale, part of the Ottosee Formation|
|At exposed section of Lenior Formation|
|Silty, crumbly limestone from the Lenior Formation|
|End of a long afternoon|