This photograph taken on U.S. 48 nigh Walnut Bottom, West Virginia, is an event of both anticlines together with synclines inwards the same formation. Anticlines (the characteristic on the left half) are downward-curving (convex) folds inwards stone that resembles an arch. The primal part, existence the well-nigh exposed to erosion, display the oldest department of rock. Synclines (the characteristic inwards the center) are upward-curving (concave) folds inwards stone that resemble a trough. The primal business office contains the youngest department of rock.
Thanks to Barbara am Ende for sharing this photograph amongst the USGS Science inwards Action Flickr Group!