The discussion of the Birdsboro paper (Faill, 2003) offered by Schlische and Withjack (2005) presents their view that the Newark basin developed as a rift structure with syndepositional faulting, a hypothesis they support with outcrop, drilling, and seismic data. Unfortunately, much of their discussion is not relevant to the original paper because the origin and tectonics of the basin was specifically excluded from the Birdsboro paper.

The Birdsboro paper (Faill, 2003) examined the Late Triassic–Early Jurassic sediments contained in the four westernmost basin remnants (Barboursville, Culpeper, Gettysburg, and Newark) that lie in the mid-Atlantic region of...

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