Again, I'll preface this by saying that I'm not a scientist. Like anyone, I rely on the research of others. If you think the earth is young based on what you've been taught or what you read in your Bible you are also dependent on the research of others unless you have discovered an older Hebrew manuscript or translation than was previously uncovered and have the capability of translating it yourself in light of it's time, culture, etc. Whenever I talk about science, I admit that I"m under qualified, but that doesn't mean I can't look at and understand what researchers have uncovered and come to a consensus on.
One such item is radiometric dating. While I've learned about it before, I was recently pointed to a helpful article written by Dr. Roger C. Wiens called "Radiometric Dating: A Christian Perspective." As you may have guessed from the title, he is a Christian. His doctoral thesis was on isotope ratios in meteorites, including surface exposure dating. He prefaces his paper with the following:
"Radiometric dating--the process of determining the age of rocks from the decay of their radioactive elements--has been in widespread use for over half a century. There are over forty such techniques, each using a different radioactive element or a different way of measuring them. It has become increasingly clear that these radiometric dating techniques agree with each other and as a whole, present a coherent picture in which the Earth was created a very long time ago. Further evidence comes from thecomplete agreement between radiometric dates and other dating methods such as counting tree rings or glacier ice core layers. Many Christians have been led to distrust radiometric dating and are completely unaware of the great number of laboratory measurements that have shown these methods to be consistent. Many are also unaware thatBible-believing Christians are among those actively involved in radiometric dating.
This paper describes in relatively simple terms how a number of the dating techniques work, how accurately the half-lives of the radioactive elements and the rock dates themselves are known, and how dates are checked with one another. In the process the paper refutes a number of misconceptions prevalent among Christians today. This paper is available on the web via the American Scientific Affiliation and related sites to promote greater understanding and wisdom on this issue, particularly within the Christian community." (bold emphasis mine)
I will write another post at some point about the human genome project, but it is interesting to note that, as with the genome project, Christians are also actively involved with this area of science. It is not 'those naturalistic atheist scientists' trying to disprove anyone's faith or religious text. It is a variety of scientists doing their best to discover the truth about the age of the universe and specifically this planet. A suspicion of conspiracy is simply one type of rhetorical move that is easily set aside. A more subtle one is that YEC peeps will often use dismissive language of carbon dating (specific example) not radiometric dating (broad method). Carbon dating is only one of the over 40 methods of radiometric dating and, according to Dr. Wiens in his introduction, is seldom used in dating the age of rocks. Carbon dating is used primarily for dating organic materials whereas the age of rocks is determined by potassium-argon and uranium-lead dating. Wiens explains the key to how these radiometric clocks work:
Wiens goes on to describe various example of these dating methods and how they work before touching on the age of the earth. By dating the oldest rocks, moon rocks, and asteroids a common pattern emerges in that the 'bodies' in our solar system came to exist about the same time: 4.5-4.6 billion years ago. He then touches on a number of other dating methods that go back 60,000+ years such as tree rings and ice cores. These ice core samples can be counted in multiple ways: visually, by the dust layers, and other annual chemical deposits.
Wiens finishes his article on a more pastoral or apologetic note appealing to Christians to take the data seriously and not be so easily dismissive:
"...some Christians question whether we can believe something so far back in the past. My answer is that it is similar to believing in other things of the past. It only differs in degree. Why do you believe Abraham Lincoln ever lived? Because it would take an extremely elaborate scheme to make up his existence, including forgeries, fake photos, and many other things, and besides, there is no good reason to simply have made him up. Well, the situation is very similar for the dating of rocks, only we have rock records rather than historical records. Consider the following:
- There are well over forty different radiometric dating methods, and scores of other methods such as tree rings and ice cores.
- All of the different dating methods agree--they agree a great majority of the time over millions of years of time. Some Christians make it sound like there is a lot of disagreement, but this is not the case. The disagreement in values needed to support the position of young-Earth proponents would require differences in age measured by orders of magnitude (e.g., factors of 10,000, 100,000, a million, or more). The differences actually found in the scientific literature are usually close to the margin of error, usually a few percent, not orders of magnitude!
- Vast amounts of data overwhelmingly favor an old Earth. Several hundred laboratories around the world are active in radiometric dating. Their results consistently agree with an old Earth. Over a thousand papers on radiometric dating were published in scientifically recognized journals in the last year, and hundreds of thousands of dates have been published in the last 50 years. Essentially all of these strongly favor an old Earth.
- Radioactive decay rates have been measured for over sixty years now for many of the decay clocks without any observed changes. And it has been close to a hundred years since the uranium-238 decay rate was first determined.
- Both long-range and short-range dating methods have been successfully verified by dating lavas of historically known ages over a range of several thousand years.
- The mathematics for determining the ages from the observations is relatively simple."
Lastly, Wiens addresses a common YEC claim made when the data is just so obvious that it can't be denied that things really do appear to look old such as rocks, starlight, etc. They often claim that God created the universe with the appearance of age. They often appeal to Adam as being created a grown man and not an infant. Wiens points out that this is not a scientific claim, but a philosophical or theological one. I agree with him when he follows up by saying that those taking this stance are therefore insisting that God intentionally created in a way that would deceive us. I have a big problem with this, but apparently YEC adherents have no problem with it at all.
Wiens closes his paper with the following:
"As scientists, we deal daily with what God has revealed about Himself through the created universe. The psalmist marveled at how God, Creator of the universe, could care about humans: "When I consider Your heavens, the work of Your fingers, the moon and the stars, which You have set in place, what is man that You are mindful of him, the son of man that You care for him?" (Psalm 8:3-4). Near the beginning of the twenty-first century we can marvel all the more, knowing how vast the universe is, how ancient are the rocks and hills, and how carefully our environment has been designed. Truly God is more awesome than we can imagine"To that I say, Amen!
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