A well-layered Earth

Authors


Abstract

Shortly after its accretion, Earth was both hot and heterogeneous, according to Don Anderson of the Seismological Laboratory at the California Institute of Technology (Caltech) in Pasadena, President-Elect of AGU. In a talk to be presented at the 1987 AGU Fall Meeting in San Francisco, Anderson draws on advances in seismology, petrology, and geochemistry for a hypothesis that Earth's mantle has been well differentiated, made up of concentric layers of different kinds of rock, throughout its history.