- Rotate the view looking from left to right and you can see the white faces of calcite filled fractures
- Once your eye is trained on the calcite filled fractures, rotate the model the other way and the spacing between those fractures becomes much more obvious.
- As you look closer, you might also notice at least 1 other fracture set whose faces are stained reddish brown.
The 3D Outcrop
(The surface may appear black for a second while the image loads. Best viewed with Chrome, FireFox, or Opera. I'm not sure how well Internet Explorer works.)
Try full screen mode to really be able to zoom around.
I'll post another outcrop when I get a sec.
Location on Google Earth
R. Smosna, Paleogeographic reconstruction of the Lower Devonian Helderberg Group in the Appalachian basin in N. J. McMillan, A. F. Embry and D. J. Glass (eds.), Devonian of the world: Canadian Soc. Petrol. Geol., v. 1, p. 265-275, 1988.