Newtonian dislocation creep in quartzites: implications for the rheology of the lower crust.
Mechanical and microstructural evidence indicates that a natural and a synthetic quartzite deformed by Newtonian dislocation (Harper-Dorn) creep at temperatures higher than 1073 K and stresses lower than 300 megapascals. The observation of this creep in these materials suggests that the lower crust may flow like a Newtonian viscous fluid by a dislocation mechanism at stresses much smaller than those previously postulated.
Wang
J N
JN
Hobbs
B E
BE
Ord
A
A
Shimamoto
T
T
Toriumi
M
M