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contour map of the crustal thickness of China

Crustal thickness (km) obtained primarily from seismic refraction/wide-angel reflection experiments. Thick crust is displayed in green shades, and thin crust is displayed in pink shades. Solid isolines represent more reliable results while dashed lines were obtained considering gravity data. The 45 km contour coincides with the western boundary of the Sino-Korean and Yangtze platforms as well as a north-south trending seismic belt (105° E).