Gulf of California: A Result of Ocean-Floor Spreading and Transform Faulting

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Science  23 Aug 1968:
Vol. 161, Issue 3843, pp. 781-784
DOI: 10.1126/science.161.3843.781


Ocean-floor spreading tore southern Baja California from mainland Mexico 4 million years ago and has subsequently rafted it 260 kilometers to the northwest along the Tamayo Fracture Zone. Magnetic-anomaly profiles indicate spreading at the mouth of the gulf at 3.0 centimeters per year and a rise-crest offset of 75 kilometers inside the gulf across the Tamayo Fracture Zone.

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