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Ken Wolgemuth

This tag is associated with 2 posts

The Age of the Earth: How Interlinking Evidence from Tree Rings, Carbon-14, and Varves demonstrates an old earth

Image from Wikipedia. Credit: By Copyright © National Land Image Information (Color Aerial Photographs), Ministry of Land, Infrastructure, Transport and Tourism, Attribution, https://commons.wikimedia.org/w/index.php?curid=28702247

What kind of evidence do we have to support the notion that the Earth is truly ancient? It’s a question I often get asked, as someone who came from a young earth background. Young Earth Creationists often posit that the evidence for an “old earth,” if viewed from a different angle, could just as easily (or perhaps better) point to a young earth. However, there are some aspects of evidence for an old earth that seem to defy this argument, particularly because they interlink in such a way that independently points towards an old earth. Here, I take a look at an article by Gregg Davidson and Ken Wolgemuth in which they make this very argument. Below is the title and abstract.

Testing and Verifying Old Age Evidence: Lake Suigetsu Varves, Tree Rings, and Carbon-14
Gregg Davidson and Ken Wolgemuth

Abstract
Carbon-14 measurements from layered sediments collected in 2006 from Lake Suigetsu, Japan, together with tree-ring data, offer an unprecedented opportunity to demonstrate how competing old- and young-earth hypotheses can be quantifiably tested. Conventional observation of radioactive decay rates, atmospheric carbon-14 production, tree-ring growth, cross-dating, and varve formation yields a narrow range of expected values for the carbon-14 content of samples over the last 50,000 years. Young-earth challenges to each observation should result in specific and predictable departures from conventional expectations. This article documents a sequence of tests to demonstrate beyond reasonable doubt that carbon-14 decay rates have remained unchanged, estimates of past atmospheric production rates are accurate, cross-dating of tree rings is reliable, the sampled trees have grown one ring per year going back more than 14,000 years, and finely layered sediments from Lake Suigetsu were deposited annually going back more than 50,000 years.

Gregg Davidson and Ken Wolgemuth, in this paper, analyze three independent lines of evidence that interlink to confirm each other. Specifically, by looking at tree rings, varve formation, and carbon-14 dating, they yield a range of possible dates that matches across these independent variables. This gives a strong confirmation of the age of the earth, along with demonstrating that the decay rate of carbon-14 does not seem to have changed and remain accurate for more than 50,000 years.

The importance of this paper, and arguments like it, is that these are independent lines of evidence that all interlink to show the same conclusion. This needs to be emphasized, because young earth creationists will often call into question these pieces of evidence individually, shooting them down with objections that they then conclude shows they are individually faulty. Rarely, if ever, do young earth creationists acknowledge or deal with the fact that these evidences, while being independent, yield results that all add up to the same ages. Again, the importance of this cannot be understated, because it would mean that, for whatever reason, the young earth creationist must then assert that their independent objections to each individual dating method also can somehow explain why those dating methods to which they are objecting yield the same results.

Tree Rings

Trees record the years they’ve been growing through rings that show how quickly their cells grew during different seasons. A record of years can be traced by comparing tree rings to show wet/dry seasons that form something similar to a bar code type pattern allowing for identifications across years. The oldest living trees have 5000 years recorded, and fossilized trees can be compared to living trees to extend that record back further, with the oldest reliable comparison yielding 14,000 years. Young earth objections to tree rings typically center around the notion that multiple rings form in single years.

Carbon-14 Dating

Wolgemuth and Davidson write that, in regards to Carbon-14 dating:

The primary requirements for determining age are (1) a constant radioactive decay rate, (2) knowledge of the original carbon-14 content, and (3) quantification of any old carbon that may have been incorporated into the specimen.

Standard young earth objections are leveled at each of these three requirements. However, it is rarely (if ever–though I’m sure someone does, somewhere) disputed that certain dates are yielded when Carbon-14 testing is done. Thus, it is the young earth objections to the three requirements where they rest their case. These objections are often that we cannot know whether the radioactive decay rate changed in the past; (less typically) that the original carbon-14 content is in question; and that the samples are somehow contaminated. Now, Wolgemuth and Davidson do clearly state that scientists must account for some known factors that can vary how quickly Carbon-14 is formed. But these can be accounted for and allow scientists to get fairly accurate data on dating samples.

Image source: http://www.suigetsu.org/varves.html Used under fair use. Accessed January 2019

Varves

Probably the least familiar of these dating methods to anyone with a passing interest in the age of the earth is varves. These are sets of alternating layers formed by sediment on the floor of bodies of water due to a number of factors. With Lake Suigetsu in mind, the method of dating involved is a measurement of algae blooms via examination of the varves. At this lake, cores have yielded dependable rates that allow dates traced back to around 150,000 years.

Independent Methods, Same Results

Where this gets interesting, and where young earth creationists ought to take note, is that while it is somewhat easy to discount individual pieces of evidence based on independent objections, it is much more difficult to do so when these allegedly faulty dating systems yield the same dates.

Carbon-14 dating methods allow scientists to make predictions for how much Carbon-14 ought to be present in a sample before testing the sample. Thus, scientists can use these predictions to chart what the expected Carbon-14 content of tree rings or varves will be. The article has just such a chart, yielding a very narrow range of expectations regarding Carbon-14 content with the age of the sample. They can then take tree rings, going with the conventional assumption that the rings indicate years, and sample them for Carbon-14 to see if they match the expectations of carbon dating. What is remarkable (visually, especially, again, see the article) is that these expected ranges correspond exactly to the samples taken of tree rings. This means that a tree ring yielding an age of 14,000 years due to the number of rings also yields an age of 14,000 years when sampled for Carbon-14. But these dating methods are completely independent. The Carbon-14 date doesn’t rely at all on the number of rings in a tree, nor is reverse true.

Wolgemuth and Davidson then show the expectations from a young earth model with explanations of tree rings. For example, the expectation of multiple rings per year is tested and falls well outside the predictions of the Carbon-14 dating. This is important, because it means that the conventional assumptions about testing dates align together independent dating systems while young earth predictions yield wildly dissimilar results. These results are presented in the paper.

Scientists go further, though, and can line these evidences up with varves of Lake Suigetsu. Here, there is some technical data about how scientists can determine when significant events happened in the lake, such as extreme algae blooms or additional brackish water, but the core of the point is that when these factors are accounted for, a predictive range for Carbon-14 can again be made and set alongside the age estimate based upon the varve samples. Once again, when aligned, there is remarkable correspondence between Carbon-14 expectations and the actual measurements set alongside the varve-counting method of dating. Additionally, note Wolgemuth and Davidson, there is a steady decline backwards in the amount of Carbon-14 present, showing not a wildly erratic decay rate but rather a steady and predictable rate as one goes deeper into the sediment of Lake Suigetsu. These predictions falsify a young earth account, in part, because the young earth model “expects… massive sediment deposits during the flood year…” in addition to other expectations of many flood models for a young earth.

Next, Wolgemuth and Davidson turn to combining all of these lines of evidence together, demonstrating that the period of overlap where we can measure tree rings, varves, and Carbon-14 yields a graph just as predicted by conventional expectations, and that varves and Carbon-14 can be plotted much farther (due to their availability and the lack of reliable tree ring data older than 14,000 years), showing a constant alignment of these independent forms of evidence.

The authors state the decisiveness of this data and its implications for models of the age of the earth quite well:

we have two options. Option 1 is that God gave us amazing tools to test and verify that carbon-14 decay rates have not changed and sediments in Lake Suigetsu have been accumulating for more than 50,000 years. Option 2 is that God precisely manipulated multiple independent phenomena—tree ring growth, atmospheric carbon-14 production, and sediment couplet formation—to mimic conventional expectations.

More Methods of Dating

Wolgemuth and Davidson don’t leave the evidence there, however, because more methods of dating can converge on Lake Suigetsu, allowing for additional independent dating. Argon-Argon dating from volcanic ash in the Lake yields a radiometric test that corresponds to Carbon-14 dating and tree ring data.

They note that most young earth creationists don’t object when Carbon-14 dating is used on things that corroborate biblical materials, such as the Dead Sea Scrolls. Yet when one puts the data point for the Dead Sea Scrolls alongside the tree ring carbon data, we find that there is, again, alignment between the Carbon-14 dating for the tree rings, the actual counting of the tree rings, and the age of the Dead Sea Scrolls. This would mean that some form of manipulation of dating systems would have to yield the correct date for the Dead Sea Scrolls but incorrect dates by counting tree rings and Carbon-14 despite the fact that these align perfectly with the data for the Dead Sea Scrolls. And with this latter data, again, Argon-Argon dating with radiometric dating can be incorporated to show yet another independent method of dating.

Conclusion

Young earth creationists have not dealt with the fact that it is not just independent methods of dating that yield similar dates but rather that these independent methods correspond with each other and back each other up. On a young earth reading of the evidence, there is no explanation for why the allegedly mistaken methods of counting tree rings, varves, measuring Carbon-14 dating, and Argon-Argon dating from volcanic ash should all correspond with the same dates. After all, each of these is taken to be independently mistaken for different reasons and at different rates. But if that’s true, then the observed data should be completely different from what it actually is. Additionally, the alleged accuracy for dating things in biblical archaeology is generally conceded by young earth creationists, and this dating for biblical artifacts also corresponds to other dating methods. Thus, the accurate date of the Dead Sea Scrolls corresponds with the allegedly inaccurate methods of tree ring counting, varve counting, and radiometric dating. What possible reason could there be for this to be the case? Going back to the words of Wolgemuth and Davidson, the most reasonable explanation is that God has given us the tools to study creation, and that these tools give us an accurate record of earth’s history.

Links

Be sure to check out the page for this site on Facebook and Twitter for discussion of posts, links to other pages of interest, random talk about theology/philosophy/apologetics/movies and more!

What options are there in the origins debate? – A Taxonomy of Christian Origins Positions– I clarify the breadth of options available for Christians who want to interact on various levels with models of origins. I think this post is extremely important because it gives readers a chance to see the various positions explained briefly.

What is the relationship between Christianity and science?- An Overview of 4 Views– How should the Christian faith interact with science? Do they interact at all? I survey 4 major views on these and other questions.

SDG.

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The preceding post is the property of J.W. Wartick (apart from quotations, which are the property of their respective owners, and works of art as credited; images are often freely available to the public and J.W. Wartick makes no claims of owning rights to the images unless he makes that explicit) and should not be reproduced in part or in whole without the expressed consent of the author. All content on this site is the property of J.W. Wartick and is made available for individual and personal usage. If you cite from these documents, whether for personal or professional purposes, please give appropriate citation with both the name of the author (J.W. Wartick) and a link to the original URL. If you’d like to repost a post, you may do so, provided you show less than half of the original post on your own site and link to the original post for the rest. You must also appropriately cite the post as noted above. This blog is protected by Creative Commons licensing. By viewing any part of this site, you are agreeing to this usage policy.

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Book Review: “The Grand Canyon: Monument to an Ancient Earth- Can Noah’s Flood Explain the Grand Canyon?” Edited by Carol Hill, Gregg Davidson, Tim Helble, and Wayne Ranney

gcmaeThe Grand Canyon: Monument to an Ancient Earth is one of the best analyses of young earth creationism on the market. In this beautifully illustrated text, the Grand Canyon is used as a test site to analyze Flood Geology, the notion that Noah’s Flood radically shaped the face of the Earth and can account for much of the sedimentary layers we observe. The Grand Canyon is an especially appropriate test case because there are young earth creationist (hereafter YEC) books published on the Canyon, and many YEC works reference the Grand Canyon in explanations of their theories.

Part 1 outlines two views of the Grand Canyon: that of flood geology, in which the vast majority of the Canyon’s sediment was laid down during Noah’s Flood; and that of conventional geology, in which long time periods and observable, repeated processes can account for the Canyon. This part includes chapters contrasting the time frames of flood geology and conventional geology, showing the massive difference between the two views conclusions about how the Canyon formed. Part 2 is entitled “How Geology Works” and covers things like sedimentary rocks, plate tectonics, and time measurements. Part 3 looks at fossils and what they tell us about the age of the Grand Canyon. Part 4 surveys how the Grand Canyon was carved. Part 4 gives a verdict on flood geology from the evidence provided.

The authors provide an introduction to geology generally speaking, and then focus what is covered onto the Grand Canyon. Throughout the whole book, the Grand Canyon serves as the testing ground for what modern geology teaches about the Earth. Then, it is contrasted with what YECs claim about the age of the earth and the processes that formed it. Time and again, this shows that YEC claims are found wanting. The chapters on fossils are particularly telling in this regard.

For example, Joel Duff demonstrates, in “Tiny Plants – Big Impact: Pollen, Spores, and Plant Fossils” that there are entire, massive chunks of sediment without any pollen or plant spores contained therein. And these layers aren’t just randomly distributed; they’re in the oldest layers of the rock, such that it demonstrates what conventional scientists have claimed, that there simply were no pollinating plants long ago. But if flood geology is to be believed, these sediments were laid down during Noah’s Flood, which would have entailed all kinds of mixing of dead plants and animals as the surface of the Earth was radically changed. How then, are there thousands of feet of sediment without any pollen? How did microscopic plant matter manage to get sifted out in such a clear distinction from other layers? This is the kind of in-depth look at the specifics of flood geology that abound everywhere in the book. YEC arguments are subjected time and again to direct refutation like this, making the book invaluable.

The book is also valuable simply as an introduction to geology as well as some biology and other sciences. I learned an extraordinary amount from the book, and I feel fairly confident that I had a working knowledge of geology. In other words, the book is not simply a refutation of flood geology in the Grand Canyon, it can also serve as a valuable introduction to several related topics.

I would be remiss if I did not call out the beauty of the book. There are breathtaking full-color photographs of the Grand Canyon throughout the book, accompanied by numerous graphs and charts. But these illustrations do more than just look pretty, they are almost always explicitly tied into the text in meaningful ways. I found myself thoroughly poring over each and every one, whether I was looking for the division between layers of rock in a photograph or flipping back to a chart repeatedly as I came to understand it better. These illustrations are perhaps made more impressive by the modest price of the book ($26.99 regular price on Amazon). Simply put, you can’t get books with this much information and as beautifully put together as this for that price, yet here it is.

There are only two minor points I’d like to mention as negatives, but they are closer to nitpicking than anything else. First, although the introductory chapters (and a few other places) note that the young earth creationist arguments about the Grand Canyon are scientific and expressly stated as being testable, I suspect many YECs will respond to the book by appealing to some presuppositional theological perspective. Though this would be a mistaken response, it would have helped the book to perhaps include one chapter showing how the YEC claims about the Canyon are inherently scientific and can be tested without a specific theological narrative. Again, this point is made, I just think it could have been elaborated a bit more. Second, there was the briefest mention of one of the most popular arguments for Intelligent Design, that of the Cambrian explosion. The mention was so short that it is difficult to see what the authors were intending.

I have read dozens, perhaps hundreds of books on the debate over science and religion. That said, The Grand Canyon: Monument to an Ancient Earth is a remarkable achievement. It provides some of the most thorough, in-depth analysis of young earth creationist reasoning that is available to date. It is beautifully illustrated with photos and charts that are directly related to the text, and it is reasonably priced. If you’re looking for analysis of flood geology from a scientific perspective, this book gives you the perfect test scenario. I cannot recommend it enough.

The Good

+Huge amount of information from geology to biology
+On-point analysis of flood geology
+Helpful charts and graphs
+Stunning photographs throughout linked to the text
+Features women’s voices
+Direct engagement with prominent YEC writings
+Reasonable price

The Bad

-Perhaps too light on the theological side
-Only the briefest engagement with ID

Disclaimer: I was provided with a review copy of the book by the publisher. I was not required to provide any specific kind of feedback whatsoever.

Source

The Grand Canyon: Monument to an Ancient Earth (Kregel, 2016).

Links

Be sure to check out the page for this site on Facebook and Twitter for discussion of posts, links to other pages of interest, random talk about theology/philosophy/apologetics/movies and more!

Book Reviews– There are plenty more book reviews to read! Read like crazy! (Scroll down for more, and click at bottom for even more!)

Eclectic Theist– Check out my other blog for my writings on science fiction, history, fantasy movies, and more!

SDG.

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The preceding post is the property of J.W. Wartick (apart from quotations, which are the property of their respective owners, and works of art as credited; images are often freely available to the public and J.W. Wartick makes no claims of owning rights to the images unless he makes that explicit) and should not be reproduced in part or in whole without the expressed consent of the author. All content on this site is the property of J.W. Wartick and is made available for individual and personal usage. If you cite from these documents, whether for personal or professional purposes, please give appropriate citation with both the name of the author (J.W. Wartick) and a link to the original URL. If you’d like to repost a post, you may do so, provided you show less than half of the original post on your own site and link to the original post for the rest. You must also appropriately cite the post as noted above. This blog is protected by Creative Commons licensing. By viewing any part of this site, you are agreeing to this usage policy.

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