Bulletin of the Seismological Society of America; February 2006; v. 96; no. 1;
p. 348-354; DOI: 10.1785/0120040086
© Seismological Society of America
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Figure 2.
from
tomographic inversion of Lg amplitudes. Darker shades
represent areas of relatively high
, and lighter
shades show areas of low
, which probably
indicates high crustal temperatures. The shades and
contour lines are
superimposed on a topography gradient map; dashed boundaries distinguish various
tectonic provinces.