Shear zones play a major role in the deformation of the crust at a variety of scales, as
expressions of strain localization during orogeny and rifting, and also as reactivated …

Zircon, with a chemical formula of ZrSiO4, is a widely used mineral for determining the
crystallization age of igneous rocks. It is also used to constrain the timing of metamorphic …

Accurate age determination of impact cratering events remains difficult and controversial.
Less than a quarter of all documented impact craters are regarded as accurately and …

Chemical zoning of crystals is often found in nature. Crystal zoning can play a role in a
mineral's thermodynamic stability and in its kinetic response in the presence of fluids …

Distorted crystals carry useful information on processes involved in their formation,
deformation and growth. The distortions are accommodated by geometrically necessary …

Zircon grains preserve records of crystallization, growth, and/or deformation that can be
envisaged from their internal structures and through the U–Pb isotope analysis. Electron …

Zircon strain chronometry can theoretically show correlation of isotopic ages with
microstructural fabrics to place an absolute age on the timing of deformation. However, the …

Direct evidence for the timing of Paleozoic metamorphism is limited in reliability and extent
in the southern Appalachians compared to the northern Appalachians. I employed U-Pb …