Low differential stress and controlled chemical environment in multianvil high-pressure experiments

Saved in:
Authors:Rubie, D. C.; Karato, S.; Yan, H.; O'Neill, H. St. C.
Author Affiliations:Primary:
Univ. Bayreuth, Bayer. Geoinst., Bayreuth, Federal Republic of Germany
Volume Title:Physics and Chemistry of Minerals
Source:Physics and Chemistry of Minerals, 20(5), p.315-322. Publisher: Springer-Verlag, Berlin-New York, Federal Republic of Germany. ISSN: 0342-1791
Publication Date:1993
Note:In English; illus., incl. 2 tables
Summary:Annealing experiments have been performed on single crystals of San Carlos olivine at 8.5 GPa and 1400°C in a 1200 tonne split-sphere multianvil apparatus. To minimize the differential stress on the sample, the olivine single-crystal is surrounded by NaCl and both pressurization and depressurization are performed slowly at 600°C (to minimize the strength of the NaCl). Olivine single crystals recovered after annealing at 1400°C and 8.5 GPa show no evidence of deformation, either ductile or brittle. Dislocation densities of 109-1010/m2 are similar to those observed prior to high-P annealing and indicate differential stresses of << 10 MPa. Infrared spectroscopy indicates that the hydrogen content of a sample annealed at 10 GPa, 1500°C for 21 h is ∼ 13 H/106Si, which, although low, is higher than that of the crystals prior to high-P annealing. - S. [A.T.R.]
Subjects:Crystal dislocations; Experimental studies; High pressure; Instruments; Kinetics; Nesosilicates; Olivine; Olivine group; Orthosilicates; Pressure; Silicates; Stress
Abstract Numbers:95M/4233
Record ID:1997012890
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first