Data by EarthByte Group is licensed under a Creative Commons Attribution 3.0 Unported License. For attribution, use the following citation:

Müller, R.D., Sdrolias, M., Gaina, C. and Roest, W.R., 2008, Age, spreading rates and spreading asymmetry of the world's ocean crust, Geochemistry, Geophysics, Geosystems, 9, Q04006, doi:10.1029/2007GC001743