857K views · 5.4K reactions | The surface of the Earth is a mosaic of tectonic plates that move. New sea floor is created in areas where the plates pull apart, allowing new crustal material to be formed from the molten magma below the Earth's surface. In this dataset, red is young sea floor and purple is old sea floor (280 million years old). Read more here: https://sos.noaa.gov/Datasets/dataset.php?id=119 | NOAA Science On a Sphere | Facebook