I own a copy of the book. Category ESR1 in the Sourcebook Catalogue is a collection of anomalies dealing with the stratigraphic record. ESR1 X4 (p. 63) is the Grand Canyon and is only a few paragraphs long. X4 is referenced to R22, which is:
(ta-da)
Waisberger, William, et. al. "Mississippian and Cambrian Interbedding: 200 Million Years Hiatus in Question,"
Creation Research Society Quarterly, 23:160, 1987.
Next is a more mainstream source that confirms that the discomformity exists, says that the parallelism of strata (note:
not the lack of erosion) is unusual and caused by the area not being exposed to significant tectonic activity. This is from:
Strahler, Arthur N.; "Stratigraphy and the Fossil Record,"
Science and Earth History, Buffalo, 1987.
For future reference, I have each of Corliss' Sourebook volumes dealing with geology. However, there have been no new editions for about a decade or so and at least 40% of the "anomalies" are being pushed by Creationists. The non-geology volumes don't have that problem.
I also think I killed the original claim by pointing out that there *are* erosional surfaces there.
[This message has been edited by gene90, 08-04-2002]