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Sea floor spreading dating

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Perhaps the most surprising of all was the discovery of seafloor spreading.

It was found that most of the oceans contained Mid-Ocean Ridges, long continuous volcanic ridges where new surface was being produced by material thrusting up from below the seabed.

The rate of sea-floor spreading resulting from this process is from 1 to 20 centimetres per year, depending on the particular mid-ocean ridge." "The Mid-Atlantic Ridge offers a particularly clear case of sea-floor spreading.

Science skills and processes: Inferring from a model.Purpose: Students will make a paper model illustrating the concept of sea-floor spreading and the development of symmetrical magnetic "stripes" on either side of a mid- ocean spreading center.Suggested Student Grouping: Students work as individuals.continuously wells up along the crests of the mid-ocean ridges that wind for nearly 80,000 km (50,000 miles) through all the world’s oceans.As the magma cools, it is pushed away from the flanks of the ridges.Earth Crust, Geochronology, Geodesy, Geodynamics, Geomagnetism, Geophysics, Igneous Rocks, Ocean Bottom, Plates (Tectonics), Polarity, Radioactive Age Determination, Satellite Observation, Sea Floor Spreading, Sediments, Tectonics, Estimates, Graphs (Charts), Interpolation, Rates (Per Time), Structural Properties (Geology), Tables (Data), Velocity 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.