Problem with radiometric dating
If the geologic column truly represents a series of closely spaced catastrophic burial events instead of long ages of time, how can this feature be explained?
Certainly this seems like a difficult and rather mysterious problem for those, like myself, who might think to question the long age notion of the fossil record.
Since the early 20th century, Radioisotope dating has been used to bolster the vast time spans ascribed to the geologic record.
However, research by geologist John Woodmorappe (a pen name) revealed that the radiometric methods used today were actually hand-picked to coincide with the dates previously assumed for the geologic column diagrams.
The nested subset pattern arises because species differ in their distributions across space.
Then they suddenly disappear from the fossil record some 80 million years ago only to reappear alive an well swimming around in oceans today.
Of course, this is a very general pattern and does not explain why certain creatures that lived on the bottoms of oceans, like trilobites, make their first appearance in the Cambrian (505-540 Ma) while other creatures that live on ocean bottoms, like crabs and lobsters, don't appear until the beginning of the Cretaceous (65-145 Ma).Why would creatures that would seem to share the same general environment while alive be so widely separated in the fossil record if they did indeed live at the same time and in pretty much the same location?This pattern arises when species that appear on few islands occur only on the islands with the most species, while only the most widespread species are found on the islands with few species (Wright et al., 1998).But before that, there is a need to go over some important background informational issues germane to the subsequent focus on the issue of common, initial and primordial Pb.However, in general, the older the rocks the less likely it is that fresh feldspar can be recovered from them and that its isotopic composition can be determined.