Ultrafine-grained quartz mylonites from high-grade shear zones: Evidence for strong dry middle to lower crust
Creep strength of the crust depends upon the rheology of the most common mineral, usually quartz. Recrystallized quartz grains in many high-grade shear zones from the middle to lower crust are typically large (millimeter sized), implying active grain boundary migration, but equivalents from old polymetamorphic and water-deficient basement sheared at similar crustal depths can be very small. For the latter, strong crystallographic preferred orientation (CPO) of quartz, with c axes aligned close...[Show more]
|Collections||ANU Research Publications|
|01_Fitz Gerald_Ultrafine-grained_quartz_2006.pdf||423.95 kB||Adobe PDF||Request a copy|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.