🔎 UNIDENTIFIED Weird rock or fossil?

[Limitool]

My girlfriend took the dogs for a walk here high on this ridgetop here in Middle Tennessee and found this. She asked me if it was a fossil and if so.... WHAT? I'm not a rock hound and don't know. If it's not a fossil it sure is a weird looking rock...? Any idea folks...? Thanks, Brad

 

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[robertk]

Fossil or not, its a neat rock.

 

[Bucket Lister]

Not fossil, IMO.
Obviously a lot of layering, the lighter sandstone(?) is softer than the darker layers.

I've several similar rocks in the basement.
Still neat. 😉

 

[Limitool]

Not fossil, IMO.
Obviously a lot of layering, the lighter sandstone(?) is softer than the darker layers.

I've several similar rocks in the basement.
Still neat. 😉

B.L.... I don't believe the lighter shade is even close to sandstone. And it's also very hard. The darker color (rings) do go all the way around also. And I'm not aware of any type sandstone here in my area but maybe I'm just naive...? But you could be right?

 

[Emil W]

Definitely some type of sedimentary rock. Harder layers alternating with softer. Water worn pebble after spending time tumbling around in a stream or river. Since the layering is fairly regular between colors and thickness, the sediment was most likely deposited seasonally. Not a fossil.