Reasons to Believe

Magnetic-Field History Supports Old Earth

TNRTB Archive - Retained for reference information

A better understanding of the history of Earth’s magnetic field undermines one major argument young-earth creationists (YECs) use to establish a few-thousand-year-old Earth. Contemporary measurements of Earth’s magnetic-field strength show that it has decreased about 5% per century over the last 150 years. Assuming this decline reflects the field behavior over all time (and a reasonable maximum possible magnetic field), most YECs reason that Earth cannot be older than a few tens of thousands of years. However, a team of geophysicists recently analyzed paleomagnetic data and demonstrated that from 1590 to 1840 the magnetic-field strength was nearly constant. Since the contemporary field decline does not characterize past magnetic-field behavior, arguing for a young Earth based on the magnetic field is no longer valid.

o   David Gubbins, Adrian L. Jones, and Christopher C. Finlay, “Fall in Earth’s Magnetic Field is Erratic,” Science 312 (2006): 900-02.


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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.