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(Far from being a rubber stamp, radiometric dating would go on to revolutionize our understanding of the Precambrian.) Thus, it became possible to date strata directly from index fossils.

Note that evolution has nothing to do with how the index fossils are used to date strata!

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It's just one of the tricks that have been used to make the work a little more precise. I believe he has confused the use of index fossils with evolution.

One creationist editor, who is more mellow than his unfortunate statement suggests, phrased the argument thus: Unfortunately the geologists date the rocks as the paleontologists tell them to. That passage might have come out of one of Henry Morris' books, except that Morris usually avoids crude slander. Hovind is not aware of the fact that by 1815 the broad outlines of the geologic column from Paleozoic times onward had been worked out by people who were mostly geologists.

One would think that the flood sediments (gathered from the four corners of the old antediluvian world) and their associated igneous rock (formed during the flood) would all register very little radiometric age.

At the very least we would expect random fluctuations if the radiometric methods were totally at sea.

Studies done on the European continent soon demonstrated the universal validity of index fossils.

That is, an index fossil corresponded to a very specific point in the geologic column.

The depth at which either is found can vary dramatically.

In the Grand Canyon area the Cambrian lies beneath a huge column of strata; in California's Mojave Desert portions of the Cambrian are exposed at the surface.

By the 1830's Adam Sedgwick and Roderick Murchison established a correlation between the various types of fossils and the rock formations in the British Isles.

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