Ocean island basalts and related rocks are the surface manifestations of intraplate volcanism. Most OIB are chemically and isotopically distinct from MORB, and therefore, have been interpreted to sample mantle that is different from the DMM, although OIB can also include a DMM component (e.g., Zindler and Hart, 1986; Hofmann, 2014). Ocean island basalts are also commonly associated with the concept of mantle plumes and hotspots, which are defined as the focused, upward flow of mantle materials that likely originate at different boundary layers within the Earth (Morgan, 1971; Campbell and Griffiths, 1990)....

First Page Preview

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