HR: 0800h
AN: U21B-0399    [Abstracts]
TI: The Allegresque History of Chemical Geodynamics: the Tenth Anniversary Revision
AU: * Shimizu, N
EM: nshimizu@whoi.edu
AF: Woods Hole Oceanographic Institution, Department of Geology and Geophysics, MS23, WHOI, Woods Hole, MA 02543, United States
AB: Chemical geodynamics is a field of studies of the dynamic workings of the earth using chemical and isotopic tracers. It is a forum where geophysicists and geochemists exchange thoughts and ideas, and Prof. Allegre's contributions to the field go much beyond the term he coined. At the Allegre Symposium in 1997 in Paris, a tapestry depicting the history of chemical geodynamics was unveiled. The evolution of the field, creatures and denizens in it, and some historical defining moments of the field were pictorially woven into it, covering a period of 1960 - 1997 CE (i.e., 23 - 60 ACA, or Anno Claude Allegre). For the occasion of the second Allegre Symposium, a new segment of the tapestry has been woven, depicting significant advances made in the field over the past ten years. Highlights emphasize expanding collaboration of dynamicists, geochemists and mineral physicists, and include chemical structure of mantle plumes, convective stirring and scale lengths of mantle heterogeneity, early earth, and deep earth. Days of Enlightenment are near?
DE: 1025 Composition of the mantle
DE: 1036 Magma chamber processes (3618)
DE: 1038 Mantle processes (3621)
DE: 1040 Radiogenic isotope geochemistry
DE: 1065 Major and trace element geochemistry
SC: Union [U]
MN: 2007 Fall Meeting