Geoscience Reference
In-Depth Information
(a)
(b)
(c)
(d)
Figure 10.38.
Sections across the Nashville Dome between the Appalachians and
the Illinois basin, and across the Kanakee Arch between the Illinois and Michigan
basins. All models have the same loads. (a) Observed depths to sedimentary
horizons. (b) Depths calculated for the best-fitting model which has a temperature-
dependent viscoelastic lithosphere. (c) Depths calculated for a model
elastic
lithosphere (
D
= 10
25
N m). (d) Depths calculated for a model viscoelastic lithosphere
10
25
Nm,
(
D
=
τ
=
27.5 Ma). (After Quinlan and Beaumont (1984).)
