Age of oceanic lithosphere
Muller, R.D., M. Sdrolias, C. Gaina, and W.R. Roest (2008) <i>Age, spreading rates and spreading symmetry of the world's ocean crust</i>, Geochem. Geophys. Geosyst., <b>9</b>, Q04006, <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1029%2F2007GC001743">10.1029/2007GC001743</a>.
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<a rel="nofollow" class="external free" href="http://www.ngdc.noaa.gov/mgg/ocean_age/ocean_age_2008.html">http://www.ngdc.noaa.gov/mgg/ocean_age/ocean_age_2008.html</a>; National Geophysical Data Center, National Oceanic and Atmospheric Administration, U.S. Department of Commerce, <a rel="nofollow" class="external free" href="http://www.ngdc.noaa.gov">http://www.ngdc.noaa.gov</a>