Email Print Share

News From the Field

Twin studies provide first explanations for boundary within Earth's mantle

December 10, 2015

This material is available primarily for archival purposes. Telephone numbers or other contact information may be out of date; please see current contact information at media contacts.

Two new studies co-authored by University of Maryland geologists provide different, though not necessarily incompatible, explanations for a boundary in Earth's mantle at a depth of 1 megameter (1,000 kilometers). One study suggests that the mantle below this line is more viscous, while the other proposes that the lower section is denser due to a shift in rock composition. The papers appear this week in the journals Science and Science Advances, respectively.Full Story

University of Maryland

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2019, its budget is $8.1 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives more than 50,000 competitive proposals for funding and makes about 12,000 new funding awards.

mail icon Get News Updates by Email 

Useful NSF Web Sites:
NSF Home Page:
NSF News:
For the News Media:
Science and Engineering Statistics:
Awards Searches: