Ocean Floor Spreading: Olduvai and Gilsa Events in the Matuyama Epoch

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Science  05 Dec 1969:
Vol. 166, Issue 3910, pp. 1267-1269
DOI: 10.1126/science.166.3910.1267


The magnetic anomaly usually associated with the Olduvai geomagnetic event (1.96 million years) should probably be associated with the Gilsa event (~ 1.65 million years). The Oldu-vai event can be correlated with a con-sistently appearing minor anomalycalled W. This reassignment gives near-ly uniform spreading rates for sections of the mid-ocean ridge system consid-ere( l here.

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