Composition of the lunar highlands: Possible implications for evolution of the Earth's crust

Abstract

An alternate implication is that the continents a r e derived from the mantle by some igneous process related to formation of the earth's core in early Precambrian time. A third possibility is that the continents are meteoritic additions to the earth, and that these supposed bodies missed the moon.A basic lunar highland composition would imply that the lower continental crust layer and the main oceanic crust layer may be the original or nearlyoriginal basaltic crust of the earth.