One place were varves have been studied for decades is below a deep lake in Japan: Though a well-worn example, this recent work pushing the varve chronology to close to 60, year bears reviewing in light of how YECs have responded in the past to this challenging data. An aerial map of Lake Japanese lake varves dating in Japan showing that it is part of a series of lakes. These formed as the result of large volcanic explosions.
This image is a web site that documents the research on the varves from this location: Lake Suigetsu fits those requirements exceptionally well. For example, the Hasu River enters Lake Mikata where the sediments suspended in the river, even during a large flood, will fall out of the water column. The sediment-depleted water flows through a narrow but shallow channel into Lake Suigetsu which is surrounded by high cliffs on all sides and has almost no input of water from the surrounding area.
The result is that the waters of Lake Suigetsu have little suspended sediment and the surrounding walls limit the wind on its surface so the waters are not disrupted. Thus the center of the lake is extremely stable and unlikely to be disturbed by floods, large storms, etc…. This provides researchers with increased confidence that the varves represent annual years and that the climatic influences on this lake in the past have been very similar to those of the Japanese lake varves dating. In the summer, pollen, algae especially diatoms, see: Life in a Glass House: These layers are very thin because in the very middle of this lake, were the cores were obtained, the total amount of material that settles to the bottom of the lake amounts to less than 1mm per year.
They have counted these layers by multiple methods. Here is an example of an ash layer from one of the cores of Lake Suigetsu.
This ash layer is more than 1cm thick the varves are less than 1mm each is composed almost pure volcanic glass. The purity suggests that it resulted from ash falling Japanese lake varves dating the sky into this very placid lake and quickly sinking to the bottom.
This image is from the Suigetsu web page: So many different tests of the annual nature of the varves have been conducted here because these varves play a critical role in calibrating the radiocarbon C14 clock.
The methods and results published in dozens of papers have been scrutinized by hundreds of other scientists and the varves counts continually remade to test their accuracy. Varves and C14 dates of organic material taken from the cores plotted against depth of the core. The correlation of C14 dates and varve counts is either in incredible coincidence or are corroborating the validity of each other.
This figure is from a publication and so represents one of the early studies from this site. Much more detailed analysis continues to support the findings Japanese lake varves dating here. Initial studies in the early s from the first cores below this lake found a tight correlation between varve count date the number of varves and radiocarbon derived dates of organics in the layers stretching all the way back to 40, varve years.
Over samples of organic material have been C14 dated and each of those has been sent to at least two — and sometimes 3!
Volcanic activity recorded in the cores provides an additional independent test of the varve chronology. Consider also that there are more than 30 visible ash layers which form discrete almost pure glass crystal layers that lie between varve layers. These would Japanese lake varves dating formed from airborne ash from volcanoes in the area. That ash would have fallen directly into the lake surface and settled quickly to the bottom. Had this ash been brought in by the river it would have been mixed with other sediments.
These ash layers further attest Japanese lake varves dating the fact that this lake had clear undisturbed waters during the whole period that these varves formed. In addition to the 30 visible layers there are at least additional ash deposits that are so fine that they can only be identified by microscope.
These represent ash from very distant or small volcanic explosions that brought a very small amount of ash fallout to the lake. Over the years there "Japanese lake varves dating" been multiple cores taken from the lake bottom which have had their varve layers counted multiple times by multiple methods by multiple investigators.
Below is a composite figure showing the relationship of tree rings, varves and C14 dates compiled from multiple studies from different locations in the world. What we see is an amazing correlation of these data points.
The graph above is a summary of comparison of carbon activity with tree rings and with lake varves from Lake Steel in Minnesota and Lake Suigetsu in Japan.
It was prepared by geologists Davidson and Wolgemuth. Notice that as one moves deeper into the sediments of a lake varve data that the total amount of C14 gradually declines.
There is no abrupt break in C14 concentrations suggestive of large changes in radioactivity in the past as predicted by some young-earth creationists. Despite significance of varve chronologies to climate studies and C14 dating methods there is only this one mention of varves in this paper:. He also reports in several other articles examples of lakes and other fossil varve sites ancient preserved lakes with varved rock such as the Green River Formation where there is evidence of multiple varves produced in a single year.
This defensive strategy employs redirection. Scientists are well aware of that annual varves require specific condition to form.
They have used multiple methods to test for annual periodicity. They have assumed nothing and only after passing all the tests have they stated that the varves under this lake represent annual varves.
Like any other interpretation, this one is a combination Japanese lake varves dating data and assumptions.
There is no attempt to consider a serious Flood alternative; it is simply a matter of PhD condescension towards the ignorant peasants who give the elite accommodationists a bad name in the eyes of the world.
If the sediments are annual varves … if C14 dating is accurate … if dendrochronology is accurate … etc. Unfortunately, none of these can be demonstrated, as shown by the links above.
This is a short response by Dr. But what alternatives does Dr. But is this Japanese lake varves dating Rather they include the same hand-wavy assertions that Reed uses: Reed wrote yet a further response to the same old-earth article see references.
I find it very difficult to find much charitable to say about Dr. Of course he is upset that his beliefs about a young earth are being challenged but he is supposed to be a PhD geologists capable of critically Japanese lake varves dating and demonstrating the faults in interpretations of old earth geology. What we get instead is nothing but name-calling rhetoric. Reed done to respond to the Christian geologists who have used the Lake Suigetsu varves as evidence of an old earth?
Rather he responded with generic arguments that apply to some varves but not the ones that are being held up as the specific challenge.
Yet he confidently claims they must be wrong! He has no interested in providing a reasonable alternative explanation for the data. The fact that they are still just waving accusations vague generalizations around is a clear sign that they know that there is no alternative.
Having Faith in Flood Geology: Dogmatic Assertions of Evidence. Varved sediments underneath lake Suigetsu provide powerful confirmation that this lake has existed for 10s of thousands of years in a state very similar to what we observe today.
A recent global flood does not provide a viable interpretation of the same evidence. The 60, from the title came from popular reporting from when this research Japanese lake varves dating first reported. The reported varve counts, which are considered reliable annual varves, only go back to just over 53, years. A response to the Old-Earth advocacy of Campell et al.
Published in Answer in Depth at the Answers in Genesis website. Below are just a few of the more than articles that have published which examine all aspects of these varves. For a list of other articles please visit: Marshall, Takeshi Nakagawa, Richard A.
Description, interpretation and climatic implications. Mark, Keiji Takemura, and Toru Danhara. Marshall, Achim Brauer, Henry F. Lamb, Christopher Bronk Ramsey et al. The 73 meter combined core reaches down to the rock below.
This would have been a mix of sedimentary and volcanic rock that formed when the volcano erupted and formed these craters. Below these craters and thos volcanics are more sedimentary rocks. The 73 meters at a minimum must be explained by YECs as post-flood deposits. The volcanoes would probably be considered post-flood and thus the material in the crater post-flood. The 60, varves do not account for the entire column.
The bottom 30 meters are organic clays with no clear varves probably because the lake was more turbid at the time. Japanese lake varves dating suggests that the lake was formed after eruption aboutyears ago. You probably also saw this.