The mantle consists of peridotite. That took a while to establish (Ringwood, 1975), and once it had been, there was a tendency to view it as consisting solely of peridotite. That view was always perhaps a bit simplistic as the mantle xenolith population contains a small but significant fraction of mafic materials such as eclogite and pyroxenite. A recognition has subsequently emerged that mafic, i.e. basaltic, materials are widespread, if not ubiquitous, and could play a critical role in basalt generation and influence isotopic and trace element compositions as well. Perhaps the first works to point out...

First Page Preview

First page PDF preview
You do not currently have access to this article.