The earthquake cycle in the dry lower continental crust: insights from two deeply exhumed terranes (Musgrave Ranges, Australia and Lofoten, Norway)

L Menegon, L Campbell… - … transactions of the …, 2021 - royalsocietypublishing.org
This paper discusses the results of field-based geological investigations of exhumed rocks
exposed in the Musgrave Ranges (Central Australia) and in Nusfjord (Lofoten, Norway) that …

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 …

Monazite as a monitor of shear strain in orogenic crust

G Dumond, KH Mahan, P Goncalves… - Journal of Structural …, 2022 - Elsevier
Abstract The Ramsay-Graham heterogeneous simple shear zone model revolutionized our
understanding of finite strain variation in orogenic belts. Many deeply exhumed (> 20 km …

High transient stress in the lower crust: Evidence from dry pseudotachylytes in granulites, Lofoten Archipelago, northern Norway

KG Dunkel, X Zhong, PF Arnestad, LV Valen… - …, 2021 - pubs.geoscienceworld.org
Seismic activity below the standard seismogenic zone is difficult to investigate because the
geological records of such earthquakes, pseudotachylytes, are typically reacted and/or …

Quantifying the effects of non‐hydrostatic stress on multi‐component minerals

BL Hess, JJ Ague, PW Voorhees - Journal of Geophysical …, 2022 - Wiley Online Library
Mineral compositions are used to infer pressures, temperatures, and timescales of
geological processes. The thermodynamic techniques underlying these inferences assume …

Mechanisms of aqueous fluid infiltration and redistribution in a lower‐crustal pseudotachylyte‐bearing fault

SP Michalchuk, M Lueder, NB Gies… - Geochemistry …, 2025 - Wiley Online Library
Coseismic fracturing in the strong, dry, and metastable plagioclase‐rich lower‐crust is an
effective mechanism for creating pathways for fluids to infiltrate the host rock, kick‐start …

Precambrian deformation belts in compressive tectonic regimes: A numerical perspective

J Poh, P Yamato, T Duretz, D Gapais, P Ledru - Tectonophysics, 2020 - Elsevier
The thermal state of the lithosphere is often considered as the main factor controlling the
distribution of the structural and metamorphic features in tectonic systems (ancient versus …

Quartz fluid inclusion abundance and off-fault damage in a deeply exhumed, strike-slip, seismogenic fault

WJ Song, SE Johnson, CC Gerbi - Journal of Structural Geology, 2020 - Elsevier
Off-fault damage zones comprise highly fractured rocks surrounding the dynamic slip
surface of faults. These damage zones modify fault-zone rheology and rupture dynamics by …

Modern style nappe stacking in the Paleoproterozoic lower crust: An example from the snowbird tectonic zone, Canadian Shield

R Graziani, K Larson, M Smit, JM Cottle, J Lamming… - Precambrian …, 2022 - Elsevier
Abstract The Intra Tantato shear zone (ITSZ), which occurs within the East Athabasca
mylonite triangle in the southern portion of the∼ 1.9 Ga Snowbird tectonic zone in northern …

Rheological evolution of a pseudotachylyte-bearing deep crustal shear zone in the western Canadian shield

OF Orlandini, KH Mahan - Journal of Structural Geology, 2020 - Elsevier
Crustal-scale continental strike-slip fault systems are typically thought to be thermally
segregated into an upper seismogenic expression and a lower zone of ductile deformation …