释义 |
Definition of sea-floor spreading in English: sea-floor spreadingnoun mass nounGeology The formation of fresh areas of oceanic crust which occurs through the upwelling of magma at mid-ocean ridges and its subsequent outward movement on either side. Example sentencesExamples - After much thought, he proposed in 1960 that the movement of the continents was a result of sea-floor spreading.
- The main figure demonstrates how sea-floor anomalies, also known as magnetic stripes, develop during sea-floor spreading.
- Reversals of the Earth's magnetic field, allied to sea-floor spreading, have left their imprint in the form of a magnetic tape recorder on the sea-floor.
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