Radiocarbon dating dinosaur fossils
The consistent failure of carbon dating facilities to find carbon-dead samples . On the basis of repeated observations of original tissues found in dinosaur and other bones, and on the basis of prior researcher’s difficulties in finding a reliable source of carbon-dead earth material to calibrate highly sensitive AMS systems, we tested 16 fossil samples for the presence of 14C. A Translation into Simple English (for non-scientists) A number of laboratories came up with the same results for dinosaur fossils: Those bones were not nearly as old as many scientists have long assumed.
highlights the regularity with which they have detected measurable amounts of radiocarbon in samples from Phanerozoic settings. The most parsimonious explanation for five different laboratories detecting radiocarbon in ancient fossils seems to be that these fossils contain endogenous 14C. Second, all samples regardless of geographic and even stratigraphic provenance, showed detectable 14C within a total age range spanning orders of magnitude smaller than the conventional age range for these fossils., Volume 51, Number 4 (Spring) . They apparently gave no objection, during the conference, to any of the materials presented by the Paleochronology group. Well, they’re not actually that old, apparently, dated at tens of thousands of years old, according to carbon-14 testing..
Many people have been led to believe that radiometric dating methods have proved the earth to be billions of years old.
Potassium-40 has a half-life of 1.3 billion years The uranium-lead radiometric dating scheme has been refined to the point that the error margin in dates of rocks can be as low as less than two million years in two-and-a-half billion years.
One of its great advantages is that any sample provides two clocks, one based on uranium-235's decay to lead-207 with a half-life of about 700 million years, and one based on uranium-238's decay to lead-206 with a half-life of about 4.5 billion years, providing a built-in crosscheck that allows accurate determination of the age of the sample even if some of the lead has been lost.
Our 16 results from a carbon isotope facility that specializes in bone tissue combine with similar detections of radiocarbon in Phanerozoic fossils from Geo Chron Laboratories in Massachusetts, the Iso Trace Radiocarbon Laboratory at the University of Toronto in Ontario, the Australia Nuclear Science and Technology Organisation (ANSTO), and the Jena AMS system at the Max-Planck Institut Fur Biogeochemie. We sought to falsify the hypothesis that this radiocarbon originated from our fossil material first by comparing our amounts of measured radiocarbon to those already published, finding general concordance between our data and already published data. It was two chairmen of the Western Pacific Geophysics Meeting in Singapore, a five-day conference held in August of 2012. So how many millions of years old are those fossils? the carbon dating results from five respected laboratories around the world of bones from ten dinosaurs .
We considered the possibility that error could arise from a given carbon-dating facility, for example by operator error on a given day. A number of pieces of dinosaur bones found in North American have been dated in recent years.
Carbon-14 (C-14) dating of multiple samples of bone from eight dinosaurs found in Texas, Alaska, Colorado, and Montana revealed that they are only 22,000 to 39,000 years old. Yet each of these dinosaurs had plenty of radiocarbon . Scientists use a technique called radiometric dating to estimate the ages of rocks, fossils, and the earth. Their are many other isotopes other than carbon14 that can be used to date dinosaur fossils and much farther back: (from wikipedia) Potassium Argon Dating-This involves electron capture or positron decay of potassium-40 to argon-40. Radiometric dating is based on the radioactive decay of certain elements.
Radiometric dating is a very reliable tool for very precise and accurate dating (however it is a hard method to perform) of fossils and rocks from thousands to billions of years in age.
Many try to discount radiometric dating based solely on the half life of carbon 14(and therefore it cannot be used for things that are billions or millions of years old).