HR: 0830h
AN: GP31C-0766 INVITED     [PDF]
TI: Mantle Roll 30 Years After
AU: * Kent, D
AF: Dept. of Geological Sciences, Rutgers University, Piscataway, NJ 08854 United States
AU: * Kent, D
AF: Paleomagnetics Lab, Lamont-Doherty Earth Observatory, Palisades, NY 10964 United States
AB: Rob Hargraves, in a pioneering paper published 30 years ago with Robert Duncan, suggested that the mantle has rolled about some independent axis within a lithospheric shell that as a whole is fixed with respect to Earth's spin axis. This work was one of the earliest attempts to use a reference frame based on mantle plumes to assess true polar wander. The status of mantle hotspots as a reference frame and evidence for true polar wander will be discussed on this occasion to honor the seminal contributions of Rob Hargraves.
DE: 1525 Paleomagnetism applied to tectonics (regional, global)
DE: 1527 Paleomagnetism applied to geologic processes
DE: 8121 Dynamics, convection currents and mantle plumes
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2003 Fall Meeting