CORRECTION

Tectonic implications drawn from differences in the surface morphology on two joint sets in the Appalachian Valley and Ridge, Virginia: Correction. Terry Engelder Geology, v. 32, p. 413–416 (May 2004)

An error was found in the following paragraph in the section titled “Regional Tectonics.” In both instances, the subscript to S should have been a capital H. The correct version appears here:

The strike of J₁ is remarkably uniform (≈ 082°) throughout the roof sequence despite the evidence that it did not propagate normal to bedding in many instances. The uniformly oriented strike for J₁ indicates a...