ocean age data
Age, spreading rates and spreading asymmetry of the world’s ocean crust
age.3.2.nc A short integer netCDF formatted file.
The age units are in millions of years, multiplied by 100 (to enable storage as short integers)
The geographic grid spans longitudes from 0 E to 360 E and latitudes from 90 N to -90 N. 2 minute resolution, gridline-registered.
Reference
Muller, R. D., M. Sdrolias, C. Gaina, and W. R. Roest (2008), Age, spreading rates, and spreading asymmetry of the world’s
ocean crust, Geochem. Geophys. Geosyst., 9, Q04006, doi:10.1029/2007GC001743.
Download
https://www.ngdc.noaa.gov/mgg/ocean_age/data/2008/grids/age/
wgm2012 gravity data
http://bgi.omp.obs-mip.fr/data-products/Grids-and-models/wgm2012