This week's Friday Field Foto is from an area just west of Death Valley called Darwin Canyon. As you can see, there is a sharp, angular contact between two sedimentary formations -- an angular ...

This week's Friday Field Photo is another one from a recent trip to the Spanish Pyrenees. What do you see? Although it may not look like much at first glance this outcrop is a nice example of a ...

Distortion of the rocks on either side of an angular unconformity is considered when the rocks are held at the sarne level of metamorphism at the time of deformation. It is found that when the rocks ...