Grafika:World geologic provinces.jpg

Map of world geologic provinces

Oceanic crust

██ 0-20 Ma

██ 20-65 Ma

██ >65 Ma

Geologic province

██ Shield

██ Platform

██ Orogen

██ Basin

██ Large igneous province

██ Extended crust

These geologic province maps depict only features approximately 150 km across and greater due to the fact that the resolution of the maps should be consistent with the resolution of the seismic refraction data.

Source: http://quake.wr.usgs.gov/research/structure/CrustalStructure/database/type.html ; original upload english wikipedia 22 April 2005 by SEWilco

This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of Interior. For more information, see the official USGS copyright policy