North America is Dripping Away From Below: A New Discovery
2025-04-05
A groundbreaking study published in Nature Geoscience reveals that the underside of the North American continent is literally dripping away in blobs of rock. Researchers at The University of Texas at Austin used a new full-waveform seismic tomography model to identify this 'cratonic thinning,' hypothesizing that remnants of the subducting Farallon plate are responsible. This ancient plate, while separated by hundreds of kilometers, is believed to be redirecting mantle flow, weakening the craton's base, and causing this slow dripping process. While not an immediate threat, this discovery offers profound insights into continental evolution and the long-term dynamics of plate tectonics.
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