Subgrain-size piezometry as a tool for measuring stress in polymineralic rocks

• Main Author: Goddard, CRM
• Other Authors: Hansen, L, Wallis, D, Kumamoto, K
• Format: Thesis
• Language: English
• Published: 2021
• Subjects: Rheology; Great Slave Lake
• Online Access: https://ora.ox.ac.uk/objects/uuid:70527c6f-bfae-4718-946c-4961da369a51

We present a new subgrain-size piezometer calibrated using electron backscatter diffraction data from experimentally deformed quartz and olivine. Subgrain size is found to be inversely proportional to the applied stress. We tested a variety of different critical misorientations to define a subgrain...