Stratigraphy of the Lower Pierre Shale (Campanian): Implications for the Tectonic and Eustatic Controls on Facies Distributions
Figure 7
Comparison of the elastic and viscoelastic model of deformation. (a) In the elastic model, initial thrusting results in thrustward migration of the peripheral bulge (1). With continued thrusting and relaxation, the peripheral bulge migrates cratonward (2, 3). (b) In the viscoelastic model, initial thrusting results in cratonward migration of the peripheral bulge (1). With continued thrusting and relaxation, the peripheral bulge migrates thrustward (2, 3). The triangle represents a stable point to show migration of the bulge relative to this point. Models based on Appalachian basin structure [38–40].
