Start Dating rocks fossils geologic events

Dating rocks fossils geologic events

Scientists have determined the relative times of appearance and disappearance of many kinds of organisms from the location of their fossils within the sedimentary rock layers.” (Glenco, 1994, pp. 714.) “The procession of life was never witnessed, it is inferred.

The periods of relative quiet contribute only a small part of the record.

…The charge that the construction of the geologic scale involves circularity has a certain amount of validity….

Apart from very ‘modern’ examples, which are really archaeology, I can think of no cases of radioactive decay being used to date fossils.” (Ager, Derek V., “Fossil Frustrations,” , vol. 425.) “The larger part of the Phanerozoic time scale…relies on a construction where stages are first scaled ‘geologically’ with biostratigraphic compositing techniques, and then stretched in linear time using key radiometric dates. E., “Pragmatism Versus Materialism in Stratigraphy,”, vol. 53) “A great deal has changed, however, and contemporary geologists and paleontologists now generally accept catastrophe as a ‘way of life’ although they may avoid the word catastrophe.

25.) “We define stratigraphic disorder as the departure from perfect chronological order of fossils in a stratigraphic sequence.

…And this poses something of a problem: If we date the rocks by the fossils, how can we then turn around and talk about the pattern of evolutionary change through time in the fossil record? 52) “…the record of evolution, like any other historical record, must be construed within a complex of particular and general preconceptions, not the least of which is the hypothesis that evolution has occurred.” (Kitts, David B., , 1979, pp. 67.) “Evolution, at least in the sense that Darwin speaks of it, cannot be detected within the lifetime of a single observer.

353-354.) “A circular argument arises: Interpret the fossil record in the terms of a particular theory of evolution, inspect the interpretation, and note that it confirms the theory. ” (Kemp, Tom, “A Fresh Look at the Fossil Record,” vol. Darwinian theory, however, is supposed to have, in addition to evolution, other less sweeping consequences which are more amenable to observational test. For most biologists the strongest reason for accepting the evolutionary hypothesis is their acceptance of some theory that entails it. The temporal ordering of biological events beyond the local section may critically involve paleontological correlation, which necessarily presupposes the non-repeatability of organic events in geologic history.

(Some of the following quotes are as cited in Morris, 1997 and Snelling, 1990).