How Consistent Are Old-Earth 'Clocks'? | The Institute for Creation Research

How Consistent Are Old-Earth 'Clocks'?

Secular scientists have numerous ways of estimating the age of Earth’s geological features, including radioisotope dating. Old-earth advocates assert that the consistency among different dating methods is a powerful argument that Earth is much older than the Bible’s ~6,000-year timescale. Indeed, if independent dating methods really do tell a millions-of-years story, then this is a powerful argument for an ancient Earth. But how consistent are they?

There appears to be a general consistency among the dating methods, but this is largely a result of circular reasoning. For instance, secular scientists assume that ice ages are caused by changes in the amount of summer sunlight falling on the northern high latitudes, according to the astronomical theory. The many serious problems surrounding this theory—which implicitly denies the Bible and the Genesis Flood—are generally ignored by secular scientists, who use it to assign ages to deep-seafloor sediment cores. But then they also use those cores to assign ages to other sediment cores and to deep-ice cores in Greenland and Antarctica.1 Then they use those ice cores dated by sedimentary records to date other deep-seafloor sediment cores—around and around we go!2

Secular scientists have even used the astronomical theory to adjust dates assigned by radioisotope dating methods.3 The argon-argon method requires the use of a rock whose age is already known in order to assign a date to a rock of unknown age. But secular scientists now use the astronomical theory to assign ages to these rock-dating standards.4

Given this, it is not surprising that there appears to be a general agreement among dating methods. However, there are many contradictions between these methods, contradictions of which the general public—and even many scientists—are unaware. The more obvious examples include detectable amounts of short-lived carbon-14 and original tissue still present in fossil specimens that are assumed to be many millions of years old. These old ages are largely the result of radioisotope ages assigned to rocks that contain the specimens.5

In addition, there are many subtle contradictions. For instance, secular scientists had originally assigned an age of about 85,000 years to ice at a depth of 2,800 meters within the GISP2 Greenland ice core. But this result disagreed with another chronology that was tied to another ice core that previously assigned an age of 110,000 years to the ice at this depth. So they re-counted the layering in the deep part of the ice at a much higher resolution, enabling them to find the “missing” 25,000 years needed to bring their layer counts into agreement. Yet, even with this manipulation, there was still a potential problem: The scientists noted that the amount of layer-thinning implied by their new chronology did not agree with expectations based on previous theoretical models, although they noted that ice disturbances deep within the ice might be able to account for this discrepancy.6 Many similar examples could be cited.

The circular reasoning used by secular scientists to reconcile the results of different dating methods should, in principle, make it much easier for them to construct a consistent story of Earth history. Yet, despite the enormous advantage such circular reasoning gives them, contradictions still persist. This should be a clue that secular scientists need to reconsider their starting assumptions. If they simply went “back to Genesis,” they would find that the history recorded there actually provides a much more satisfying scientific framework for interpreting the clues about Earth’s past.

References

  1. Hebert, J. 2014. Ice Cores, Seafloor Sediments, and the Age of the Earth, Part 1. Acts & Facts. 43 (6): 12-14.
  2. Hebert, J. 2014. The Ice Age and the Flood: Does Science Really Show Millions of Years? Dallas, TX: Institute for Creation Research.
  3. Herbert, T. D. 2010. Paleoceanography: Orbitally Tuned Timescales. In Climates and Oceans. J. H. Steele, ed. Amsterdam: Academic Press, 370-377.
  4. K/Ar and 40Ar/39Ar Methods: The 40Ar/39Ar Dating technique. New Mexico Bureau of Geology and Mineral Resources. Posted on geoinfo.nmt.edu, accessed May 7, 2014.
  5. Thomas, B. 2014. Still Soft after Half a Billion Years? Creation Science Update. Posted on icr.org May 5, 2014, accessed July 30, 2014.
  6. Meese, D. A. et al. 1997. The Greenland Ice Sheet Project 2 Depth-age Scale: Methods and results. Journal of Geophysical Research. 102 (C12): 26411-26423.

* Dr. Hebert is Research Associate at the Institute for Creation Research and received his Ph.D. in physics from the University of Texas at Dallas.

Cite this article: Jake Hebert, Ph.D. 2014. How Consistent Are Old-Earth 'Clocks'?. Acts & Facts. 43 (10).

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