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The influence of basaltic melt and water content on the high-temperature plastic deformation behavior of olivine aggregates was studied by performing a series of high-temperature creep experiments. The specimens, which are the powder of San Carols olivine plus 1, 4, or 7 wt% MORB, with the grain size of 10-20 μm, were hotpressed. Deformation experiments were conducted in a gas-medium apparatus at a confining pressure of 300 MPa and temperature of 1373 K to 1473 K. Water was supplied by dehydration of TALC near 1073 K. The hy- droxyl concentration in the samples was determined from Fourier-Transform Infrared (FTIR) spectra.
The influence of basaltic melt and water content on the high-temperature plastic deformation behavior of olivine aggregates was studied by performing a series of high-temperature creep experiments. The specimens, which are the powder of San Carols olivine plus 1, 4, or 7 wt% MORB, with the grain size of 10-20 μm, were hotpressed. Deformation experiments were conducted in a gas-medium apparatus at a confining pressure of 300 MPa and temperature of 1373 K to 1473 K. Water was supplied by dehydration of TALC near 1073 K. The hy-droxyl concentration in the samples was determined from Fourier-Transform Infrared (FTIR) spectra.