Rock rheology and density have first‐order effects on the lithosphere's response to plate
tectonic forces at plate boundaries. Changes in these rock properties are controlled by …

Shear zones channelize fluid flow in Earth's crust. However, little is known about deep
crustal fluid migration and how fluids are channelized and distributed in a deforming lower …

The rheology and the conditions for viscous flow of the dry granulite facies lower crust are
still poorly understood. Viscous shearing in the dry and strong lower crust commonly …

Mid-crustal deformation is classically characterized by the transition from ductile to brittle
deformation defining the frictional-to-viscous transition (FVT). Here we investigate an …

The Pernambuco shear zone (northeastern Brazil) is a large-scale strike-slip fault that, in its
eastern segment, deforms granitoids at mid-crustal conditions. Initially coarse-grained (> 50 …

Natural quartzite samples, as-is and with 0.1 wt% of added H 2 O, have been deformed up
to∼ 30% bulk strain in axial shortening experiments with constant strain rate of∼ 10− 6 s− 1 …

The deformation of eclogites and the driving forces for their fabric development are an
important topic, potentially allowing to determine deformation rates and stresses in …

In order to address the question of the processes involved during shear zone nucleation, we
present a petro-structural analysis of millimetre-scale shear zones within the Roffna rhyolite …

Almost all alkali feldspar crystals contain a rich inventory of exsolution, twin, and domain
microtextures that form subsequent to crystal growth and provide a record of the thermal …

At mid-crustal conditions, deformation of feldspar is mainly accommodated by a combination
of fracturing, dissolution–precipitation, and reaction-weakening mechanisms. In particular, K …