An example of the first problem is the monoplacophoran mollusk Pilina, which might otherwise be considered diagnostic of the Silurian System, except for the startling discovery that Neopilina lives today, and, therefore, would be expected in any system overlying the Silurian. For these reasons correlation by fossils must always remain tentative awaiting further confirmatory evidence from lithostratigraphy.
These men stood for careful empirical science and were not compelled to believe evolutionary speculation or side with uniformitarian theory.
Although most would be called "progressive creationists" in today's terminology, they would not be pleased to see all the evolutionary baggage that has been loaded onto their classification of strata.
Several erroneous notions have been attached to the geologic column. The geologic column was constructed by geologists who, because of the weight of the evidence that they had found, were convinced of the truth of uniformitarian theory and organic evolution.
The following are the ten most common misconceptions. It may sound surprising, but the standard geologic column was devised before 1860 by catastrophists who were creationists.1 Adam Sedgewick, Roderick Murchison, William Coneybeare, and others affirmed that the earth was formed largely by catastrophic processes, and that the earth and life were created.
Each rock type is not distinctive of the Cambrian, and neither is the unconformity, but the sequence may be.
Bed-to-bed correlation of strata to their "type system" area is the most reliable method of assigning strata to a system. Austin, "Did the early earth have a reducing atmosphere? Overturning, overthrust faulting, or landsliding are frequently maintained as disrupting the order.In some locations such structural changes can be supported by physical evidence while elsewhere physical evidence of the disruption may be lacking and special pleading may be required using fossils or radiometric dating.A single sedimentary lamina, or bed, was supposed by uniformitarian geologists to represent typically a year or many years duration. It was concluded, therefore, that multiplied thousands of laminae and beds superimposed required millions of years. Geologists and geochronologists assert that radiometric dating verifies that individual strata systems and their strata are millions of years old. Ager, The Nature of the Stratigraphical Record, 2nd ed.