Doell and Dalrymple Discover the Magnetic Reversals of Earth’s Poles
At a glance:
- Series: Great Events from History II: Science and Technology Series
- Categories: Science
- Subcategories: Scientists, Earth Sciences, Geology, Geologists
- Curriculum: American History 1951-present
- Geographical Location: California
- Date: Summer, 1964-Summer, 1965
Article abstract: Doell and Dalrymple discovered the Jaramillo normal event and established the Matuyama-Brunhes geomagnetic reversal boundary.
Summary of Event
In the early twentieth century, the idea was proposed that the polarity of the earth’s magnetic field experienced changes. This was based on studies by geophysicists of remanent magnetization of volcanic rocks and baked earth. In 1906, Bernard Brunhes, a French physicist, found volcanic rocks magnetized in the opposite direction with reference to the earth’s present magnetic field. He...
[The entire page is 1890 words long]
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