Analysis of crystallographic preferred orientations of experimentally deformed Black Hills Quartzite

R Kilian, R Heilbronner - Solid Earth, 2017 - se.copernicus.org
The crystallographic preferred orientations (textures) of three samples of Black Hills
Quartzite (BHQ) deformed experimentally in the dislocation creep regimes 1, 2 and 3 …

Water redistribution in experimentally deformed natural milky quartz single crystals—Implications for H2O‐weakening processes

H Stünitz, A Thust, R Heilbronner… - Journal of …, 2017 - Wiley Online Library
Natural quartz single crystals were experimentally deformed in two orientations:(1)⊥ to one
prism plane and (2) in O+ orientation at 900 and 1000° C, 1.0 and 1.5 GPa, and strain rates …

[HTML][HTML] Evolution of H2O content in deforming quartz aggregates: An experimental study

H Stünitz, H Raimbourg, L Nègre, J Précigout… - Journal of Structural …, 2024 - Elsevier
Deformation experiments were carried out on pure quartzite samples (> 99% quartz) with a
grain size of∼ 200 μm from Tana, Northern Norway. Deformation conditions were 900° C …

Heterogeneous brittle-ductile deformation at shallow crustal levels under high thermal conditions: The case of a synkinematic contact aureole in the inner northern …

S Papeschi, G Musumeci, F Mazzarini - Tectonophysics, 2017 - Elsevier
We present an example of interaction between magmatism and tectonics at shallow crustal
levels. In the Late Miocene the metamorphic units of the eastern Elba Island (northern …

Evolution in H2O contents during deformation of polycrystalline quartz: An experimental study

G Palazzin, H Raimbourg, H Stünitz… - Journal of Structural …, 2018 - Elsevier
Shear experiments were performed in a Griggs-type apparatus at 800° C and 1.5 GPa, at a
strain rate of 2.1× 10− 5 s− 1 using different starting materials:(i) Powder (grain size 6–10 …

Quartz and cristobalite ballen in impact melt rocks from the Ries impact structure, Germany, formed by dehydration of shock‐generated amorphous phases

CA Trepmann, F Dellefant, M Kaliwoda… - … & Planetary Science, 2020 - Wiley Online Library
Quartz and cristobalite ballen aggregates surrounded by dendritic cristobalite in gneiss
clasts of impact melt rocks from the Ries impact structure are analyzed by Raman …

Temperature, fluid content and rheology of localized ductile shear zones in subsolidus cooling plutons

A Ceccato, P Goncalves… - Journal of Metamorphic …, 2020 - Wiley Online Library
Temperature and fluid content are critical parameters that control rock rheology and strain
localization in the continental crust. Here, we determine by thermodynamic modelling the of …

[HTML][HTML] Water loss during dynamic recrystallization of Moine thrust quartzites, northwest Scotland

AK Kronenberg, KT Ashley, MK Francsis… - …, 2020 - pubs.geoscienceworld.org
Infrared absorption measurements of molecular water in sheared Cambrian quartzites in the
footwall to the Moine thrust reveal a decrease in water content from 4080 to 1570 ppm with …

Strength of dry and wet quartz in the low‐temperature plasticity regime: Insights from nanoindentation

A Ceccato, L Menegon… - Geophysical Research …, 2022 - Wiley Online Library
At low‐temperature and high‐stress conditions, quartz deformation is controlled by the
kinetics of dislocation glide, that is, low‐temperature plasticity (LTP). To investigate the …

Water release and homogenization by dynamic recrystallization of quartz

J Fukuda, T Okudaira, Y Ohtomo - Solid Earth, 2023 - se.copernicus.org
To evaluate changes in water distribution generated by dynamic recrystallization of quartz,
we performed infrared (IR) spectroscopy mapping of quartz in deformed granite from the …