HR: 0800h
AN: MR11A-0886    [Abstracts]
TI: Investigation on cell assemblies for mantle rheology
AU: * Long, H
EM: hlong@ic.sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AU: Li, L
EM: lilli@ic.sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AU: Chen, J
EM: Jiuhua.Chen@sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AU: Leinenweber, K
EM: kurtl@asu.edu
AF: Department of Chemistry, Arizona State University, Tempe, AZ 85287-1604 United States
AU: Wang, L
EM: liping.wang@sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AU: Liu, Z
EM: zxliu@bnl.gov
AF: Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd., N.W, Washington, DC 20015 United States
AU: Vaughan, M T
EM: mvaughan@notes.cc.sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AU: Yang, Y
EM: yuyang@notes.sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AU: Weidner, D J
EM: dweidner@notes.cc.sunysb.edu
AF: Mineral Physics Institute, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794 United States
AB: Several types of cell assemblies are being tested on large volume press apparatus at Sam85, NSLS to determine their suitability for high pressure rheology experiments, with present focus on the influence of different cells on water fugacity and the thermal efficiency. SanCarlos olivine, both lab dry and super dry, is being used as the testing material. Three types of pressure media including mullite, MgO and boron:epoxy (BE) are used for both DIA and T-cup apparatus in the test. For lab dry sample assemblies, 2­¦3 hours heating at 130C in the vacuum environment is applied before experiment in order to drive off the absorptive water. Different pressure media in each apparatus are carried out at the same P-T path. After experiments the recovered samples are examined on the synchrotron infrared (IR) spectrometer at U2A beamline of NSLS to evaluate the water concentration. IR results suggest that mullite cell offers an acceptable dry environment for the rheology study. Among the tested cell assemblies, mullite cell has a comparable thermal efficiency as BE cell does. Both of them show much higher heating efficiency than MgO cell does. This preliminary study suggests that mullite has great potential as the pressure medium for the high pressure and high temperature experiment.
DE: 3900 MINERAL PHYSICS
DE: 3902 Creep and deformation
DE: 3924 High-pressure behavior
DE: 3994 Instruments and techniques
SC: Mineral and Rock Physics [MR]
MN: 2004 AGU Fall Meeting