How Do Scientists Determine the Age of Dinosaur Bones?

※ Download: Radiocarbon dating of dinosaur bones

The δ 13C value for animals depends on their diet. The Two Creeks radiocarbon dates are now regarded as a key result in developing the modern understanding of North American glaciation at the end of the Pleistocene.

When an animal or plant dies, it no longer takes in carbon of any form. If testing recrystallized shell is unavoidable, it is sometimes possible to identify the original shell material from a sequence of tests. Note its demonstration here; by definition, if the dates are not what we expect in our worldview, then the steps have failed, period, regardless of what they are.

How Do Scientists Determine the Age of Dinosaur Bones? - Carbon exchange reservoir Simplified version of the carbon exchange reservoir, showing proportions of carbon and relative activity of the 14 C in each reservoir Carbon is distributed throughout the atmosphere, the biosphere, and the oceans; these are referred to collectively as the carbon exchange reservoir, and each component is also referred to individually as a carbon exchange reservoir.

I read through your article concerning the existence and life of dinosaurs. Have you ever heard of radiometric dating? Different radioactive isotopes can be used to date material from bone fragments to rocks so in fact, yes there is a great amount of proof that the Earth is billions of years old and that dinosaurs lived millions of year ago. We don't need to be there to know it... Also, I believe creation scientist is an oxymoron. You can't take the Bible literally yet conform to the techniques and values of science. If you did, you'd know about radiometric dating and how it is used as irrefutable proof that the Earth by itself is approximately four billion years old. Yes, we are well aware that there are different radioactive isotopes and that they can be used via the technique of radiometric dating to date materials from bone fragments to rocks. From the way you are using the word, it does not seem that you understand its meaning. On the other hand, the court testimonies of forensic scientists are subjected to intense scrutiny, because they do not constitute proof. Rather, the evidence of scientists who were not there to witness the event is open to alternate interpretations. In order to link the evidence to the accused, the scientists , and then they build their interpretations on those assumptions. You can find on our website that discuss these issues. In our three article series on radiometric dating, we discuss in depth the assumptions that scientists must make. For example, it has to be assumed that all the daughter isotopes found in rocks today have been derived by radioactive decay of the parent isotopes. It also has to be assumed that the rate of decay of the parent isotopes in the past has occurred constantly at the same rates measured today. This notion is based on a complete misunderstanding of the nature of evidence. What we observe and measure today exists in the present. The only way we know our observations were the same last week as they are today is if we have an eyewitness testimony from someone who made the same observations last week. In the Bible, we have the eyewitness testimony of someone who has been present throughout all of history and who has told us what happened. And what we read in the Bible is confirmed by the observations we make in the world around us. He created laws that operate regularly through time and space, so we can depend on the sun rising tomorrow just as it rose this morning. Christians were at the forefront of developing what we call science today. On the other hand, because the Creator God of the Bible is who He says He is, as revealed in the Bible, we can make observations today and be absolutely confident that they will be the same tomorrow when we do them again. Since you clearly do not accept the Creator God of the Bible, then with respect, you have no basis for doing science and knowing whether any observations you make are reliable. He is not capricious but has put order and regularity into His creation, and He is a reliable eyewitness of what happened in the past as recorded in the Bible. The evidence seen around us in the rocks and fossils confirm the literal or face value reading of that narrative. As explained above, the very techniques of science were established by those who had a Christian view of the world rooted in the historical narrative of the Bible and the trustworthiness of both its author and the text itself. To begin with, is the earth approximately 4 billion years old? Actually, the latest estimates suggest a date of 4. Most people are not aware of this. The truth is that the age of the earth has been established by dating meteorites, which are not earth rocks. They have come from somewhere else in the solar system, and their source is assumed to have formed at the same time as the earth. As you yourself have said, radioactive isotopes can be used to date bone fragments. In this case, radiocarbon has been used, and sure enough, radiocarbon dating reveals that fossilized dinosaur bones are only thousands of years old! If, as you claim, dinosaurs lived millions of years ago, then because radiocarbon decays so rapidly there should be no radiocarbon left in dinosaur bones. You can read all about radiocarbon dating in the series of three articles on our website. If these were all millions of years old, then there should be no radiocarbon left in them. The fact is that all these materials yield radiocarbon dates of only thousands of years. And all of this is documented in scientific literature, such as in the journal Radiocarbon. In conclusion, let me point out some major weaknesses in your comments. In other words, your comments are full of logical fallacies, such as non-sequiturs, which means that your claim A does not follow from your statement B. Besides, without the Creator God of the Bible,! Thanks again for your comments. We invite you to spend more time browsing our website and reading our many articles. The question is, are you willing and open in your mind to be convinced by the evidence? Yours sincerely in Christ, Dr.

FOSSILS: how fossils are dated
If they are right, this means all C-14 ages greater than two or three thousand years need to be lowered drastically and that the earth can be no older than ten thousand years. Countless instances of oil and gas and even diamonds all show C14 when they 'should not'. In addition, the oldest known moon rocks are 4. It is their interpretation that is the issue. All plants and animals have a regular intake of carbon while they are alive. Handbook of Radioactivity Analysis 3rd ed. They were similar to radiocarbon dates for ice-age megafauna such as Siberian mammoths, saber tooth tigers of the Los Angeles LaBrea Tarpits, sloth dung, and giant bison. Not only does he consider this proof that the earth can be no older than ten thousand years but he also points out that a greater magnetic strength in the past would reduce C-14 dates. To imply otherwise is dishonest, Dr. It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of with atmospheric. For example, a wooden object that remains in use for a lengthy period will have an apparent age greater than the actual age of the context in which it is deposited. LeBlanc, DarBin Shieh, RongSeng Chang, ChengCheng Chiang, Chuanwei Yang, Shiming Zhong.