The effects of earthquakes and fluids on the metamorphism of the lower continental crust

B Jamtveit, A Petley‐Ragan, S Incel… - Journal of …, 2019 - Wiley Online Library
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 …

Micropetrology: Are inclusions grains of truth?

S Ferrero, RJ Angel - Journal of Petrology, 2018 - academic.oup.com
Inclusions in minerals, whether fluids, melts or crystalline phases, are small pieces of the
large-scale puzzle of Nature, time-consuming to investigate and often of difficult …

Dynamic earthquake rupture in the lower crust

A Petley-Ragan, Y Ben-Zion, H Austrheim… - Science …, 2019 - science.org
Earthquakes in the continental crust commonly occur in the upper 15 to 20 km. Recent
studies demonstrate that earthquakes also occur in the lower crust of collision zones and …

Energy partitioning, dynamic fragmentation, and off‐fault damage in the earthquake source volume

SE Johnson, WJ Song, SS Vel… - … Research: Solid Earth, 2021 - Wiley Online Library
Seismological fracture or breakdown energy represents energy expended in a volume
surrounding the advancing rupture front and the slipping fault surface. Estimates are …

Dynamic pressure variations in the lower crust caused by localized fluid-induced weakening

E Moulas, B Kaus, B Jamtveit - Communications Earth & Environment, 2022 - nature.com
Metamorphism of dry, lower crust within orogens is often localized in shear zones composed
of mechanically weaker rocks,,–. Several field-based studies suggest shear zone …

High stress deformation and short‐term thermal pulse preserved in pyroxene microstructures from exhumed lower crustal seismogenic faults (Lofoten, Norway)

LR Campbell, L Menegon - Journal of Geophysical Research …, 2022 - Wiley Online Library
Earthquake rupture in strong, anhydrous lower continental crust requires high brittle failure
stresses unless high pore fluid pressures are present. Several mechanisms proposed to …

On-fault earthquake energy density partitioning from shocked garnet in an exhumed seismic midcrustal fault

G Toffol, G Pennacchioni, L Menegon, D Wallis… - Science …, 2024 - science.org
The energy released during an earthquake is mostly dissipated in the fault zone and
subordinately as radiated seismic waves. The on-fault energy budget is partitioned into …

Strain hardening induced by crystal plasticity: A new mechanism for brittle failure in garnets

R Dubosq, DA Schneider, A Camacho… - Earth and Planetary …, 2023 - Elsevier
Garnet is a high-strength mineral stable across a wide range of pressure and temperature
conditions and preserves structures that can consequently be used to understand the …

[HTML][HTML] Quartz cleavage fracturing and subsequent recrystallization along the damage zone recording fast stress unloading

LM Brückner, F Dellefant, CA Trepmann - Journal of Structural Geology, 2024 - Elsevier
Strings of recrystallized grains along cleavage planes in host quartz crystals within
pseudotachylyte-bearing breccias from the Silvretta basal thrust, Central European Alps …

Time‐lapse record of an earthquake in the dry felsic lower continental crust preserved in a pseudotachylyte‐bearing fault

NS Mancktelow, A Camacho… - Journal of Geophysical …, 2022 - Wiley Online Library
The mechanisms of earthquake rupture in lower continental crust, below the usual frictional‐
viscous transition, remain uncertain. In addressing this problem, the study of …