Tiny Tracers Tell Tall Tales

See allHide authors and affiliations

Science  17 May 2002:
Vol. 296, Issue 5571, pp. 1247-1248
DOI: 10.1126/science.1070399

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


Did Earth's mantle evolve as a chemically layered system, or has it always convected as a whole? In his Perspective, Ballentine argues that noble gases trapped in the silicate mantle may hold the key to resolving this question. Volatile-rich regions still exist in today's mantle, and knowledge of where and how the volatile-rich material in the mantle is preserved will be a crucial constraint in the formulation of future mantle models.