There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page. To correct the first 2 answers a fossil is, by definition, mineralised. Carbon dating only works accurately on specimens whose carbon came directly or indirectly from the atmosphere.
Why can’t Carbon-14 be used to date rocks or fossils that are a million years old?
Dating Fossils in the Rocks | National Geographic Society
In the mid-2nd millenium BC, between and BC, there was a cataclysmic volcano eruption which devastated the Mediterranean island of Thera now called Santorini , and launched volcanic rock as far as Greenland. The cryptic nature of the Thera erpution has given rise to many theories on the matter, from the cause of the fall of the legendary society of Atlantis, to an explanation of the plagues visited upon the Egyptians in Exodus and even the parting of the Red Sea. Charlotte Pearson sought to refine the carbon dating process. Currently the process can only date samples to within a span of decades, but Pearson hopes that this new method can date samples to a specific year.
Can carbon-14 dating link Exodus with a cataclysmic volcano eruption?
The age of fossils can be determined using stratigraphy, biostratigraphy, and radiocarbon dating. Paleontology seeks to map out how life evolved across geologic time. A substantial hurdle is the difficulty of working out fossil ages. There are several different methods for estimating the ages of fossils, including:.
When news is announced on the discovery of an archaeological find, we often hear about how the age of the sample was determined using radiocarbon dating, otherwise simply known as carbon dating. Deemed the gold standard of archaeology, the method was developed in the late s and is based on the idea that radiocarbon carbon 14 is being constantly created in the atmosphere by cosmic rays which then combine with atmospheric oxygen to form CO2, which is then incorporated into plants during photosynthesis. When the plant or animal that consumed the foliage dies, it stops exchanging carbon with the environment and from there on in it is simply a case of measuring how much carbon 14 has been emitted, giving its age. But new research conducted by Cornell University could be about to throw the field of archaeology on its head with the claim that there could be a number of inaccuracies in commonly accepted carbon dating standards.
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