103
Geochemical Journal, Vol. 10, pp. 103 to 106, 1976
NOTE
Abundance of rare-earth elements in the Earth's crust:
Evidence for origin of granites and recent sedimentary rocks
Yu. A.
BALASHOV
and A. I.
TUGARINOV
V. I. Vernadsky Institute of Geochemistry and Analytical
Chemistry, USSR Academy of Sciences, Moscow, USSR
(Received May 18, 1976)
In accordance with the average RE content of sedimentary and magmatic rocks the abundance of RE
in the Earth's crust is estimated as being close to 100 - 110 ppm. The evolution of RE composition and
content of the sedimentary cover of the continents (in particular the appearance of europium deficiency
in young sediments) is conditioned by the influence of the material predominantly from acid magmas
which are generated in the crust.