Reasons to Believe

Consistent Dates from Different Methods Support an Old Earth

TNRTB Archive - Retained for reference information

Geologists have applied multiple dating techniques to an Arizona geological feature, resulting in concordant dates that argue against a young Earth. Young-earth creationists (YECs) often insist that radioisotope dating cannot be trusted because different radioisotope techniques can give different results. Frequently scientists employ multiple dating techniques to verify a questionable date. Scientists recently dated a lava dam on the Little Colorado River in Arizona using a luminescence technique, two different radioisotope chains, and paleomagnetic field directions. All four methods yielded consistent results, giving an age of around 20,000 years—clearly older than the 6-to-10-thousand-year age of the earth proposed by YECs. While radioisotope dating does occasionally give inaccurate results, those exceptions do not negate the vast amount of well-verified evidence for a much older Earth.

o   Wendell Duffield et al., “Multiple Constraints on the Age of a  Pleistocene Lava Dam Across the Little Colorado River at Grand Falls, Arizona,” Geological Society of America Bulletin 118 (2006): 421-29.


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Subjects: Scientific Evidence for an Old Earth

Dr. Hugh Ross

Reasons to Believe emerged from my passion to research, develop, and proclaim the most powerful new reasons to believe in Christ as Creator, Lord, and Savior and to use those new reasons to reach people for Christ. Read more about Dr. Hugh Ross.