The effect of pressure on the rheology of olivine

Yong Hong Zhao, Zhong Yan Wang, David F. Bruhn, David L. Kohlstedt

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The experimental results of the effect of pressure on the dislocation creep behavior of fine-grained San Carlos olivine were presented in this paper. Compressive creep experiments on dry, synthetic aggregates of olivine were conducted using a high-resolution gas-medium deformation apparatus. In a typical constant-temperature experiment at either 1473 or 1523 K, a sample was first deformed at 400 MPa, then at 200 MPa, and then again at 400 and 200 MPa, respectively. The corresponding value of the activation volume for dislocation creep of fine grained olivine is (23 ± 3) × 10-6m3/mol. The possible application of our test results to the mantle dynamic process of earth was discussed as well.

Original languageEnglish (US)
Pages (from-to)577-582
Number of pages6
JournalActa Petrologica Sinica
Issue number3
StatePublished - Jul 2003


  • Activation volume
  • Dislocation creep
  • Effect of pressure
  • Experimental study
  • Olivine aggregates


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