Dating a rock Chat online naughty girls
Thus, the procedure is far from ideal and the geologic ranges of fossils are constantly being revised (usually extended) as new occurrences are found. ” (Raup, David M., “Geology and Creationism,” , vol. 21.) “The sedimentary rocks, by themselves, however, do not yield any specific time marks, setting aside the old law of superposition, which can provide relative age indication only in a restricted manner, and which is unfit for age correlations.
Moreover, it may be misleading in some cases: the beds in a section may be overturned or, owing to a hidden thrust plane, older beds may overlie younger ones.
25.) “We define stratigraphic disorder as the departure from perfect chronological order of fossils in a stratigraphic sequence.
Any sequence in which an older fossil occurs above a younger one is stratigraphically disordered.
10, 2010.) “In about 1830, Charles Lyell, Paul Deshayes, and Heinrich George Bronn independently developed a biostratigraphic technique [geologic column] for dating Cenozoic deposits based on relative proportions of living and extinct species of fossil mollusks….
Strangely, little effort has been made to test this assumption.
It is almost the first thing I teach my first-year students. al., : Biostratigraphy: Time Scales from Graphic and Quantitative Methods,” , 2004, p. The rocks do date the fossils, but the fossils date the rocks more accurately.
Ever since William Smith at the beginning of the 19th century, fossils have been and still are the best and most accurate method of dating and correlating the rocks in which they occur. 49.) “Are the authorities maintaining, on the one hand, that evolution is documented by geology and, on the other that geology is documented by evolution? Stratigraphy cannot avoid this kind of reasoning, if it insists on using only temporal concepts, because circularity is inherent in the derivation of time scales.” (O’Rourke, J.
Even many evolutionists ruefully admit that this charge is undeniable with regard to the circularity invoked in dating rock layers.
The geologist has never bothered to think of a good reply, feeling that explanations are not worth the trouble as long as the work brings results.
This is supposed to be hard-headed pragmatism.” (O’Rourke, J.
Scales of stratigraphic disorder may be from millimeters to many meters.
Stratigraphic disorder is produced by the physical or biogenic mixing of fossiliferous sediments, and the reworking of older, previously deposited hard parts into younger sediments.
By doing so, we are guilty of circular reasoning if we then say the fossil record supports this theory.” (West, Ronald R., “Paleontology and Uniformitarianism,” vol. 216.) “It cannot be denied that from a strictly philosophical standpoint geologists are here arguing in a circle.