Anomalous patterns of clay minerals in fault zones

XU Zhenhao, YU Tengfei, LIN Peng, LI Shucai - Engineering Geology, 2023 - Elsevier
The anomalous enrichment of clay minerals in fault zones is considered a key factor
affecting the seismic behavior of faults, fault permeability, and mineralization. This process …

Melting of fault gouge at shallow depth during the 2008 MW 7.9 Wenchuan earthquake, China

H Wang, HB Li, G Di Toro, LW Kuo… - …, 2023 - pubs.geoscienceworld.org
Typical rocks at shallow depths of seismogenic faults are fluid-rich gouges. During
earthquakes, on-fault frictional heating may trigger thermal pressurization and dynamic fault …

The effect of fault roughness and earthquake ruptures on the evolution and scaling of fault damage zones

Y Tal, D Faulkner - Journal of Geophysical Research: Solid …, 2022 - Wiley Online Library
Fault damage zones dominate the mechanical, hydraulic and seismological properties of
faults yet the relative contributions from processes leading to their development and growth …

Dating deformation: the role of atomic-scale processes

IM Villa - Journal of the Geological Society, 2022 - lyellcollection.org
Dating deformation is difficult, as textures and petrogenesis of deformed rocks are complex.
Moreover, geochronometer categories are pursued by communities that often do not …

Along-strike architectural variability of an exhumed crustal-scale seismogenic fault (Bolfin Fault Zone, Atacama Fault System, Chile)

S Masoch, M Fondriest, R Gomila, E Jensen… - Journal of Structural …, 2022 - Elsevier
Fault zone architecture and its internal structural variability play a pivotal role in earthquake
mechanics, by controlling, for instance, the nucleation, propagation and arrest of individual …

Frictional melting mechanisms of rocks during earthquake fault slip

S Woo, R Han, K Oohashi - Scientific Reports, 2023 - nature.com
Rapid slip, at rates in the order of 1 m/s or more, may induce frictional melting in rocks during
earthquakes. The short-lived melting has been thought to be a disequilibrium process, for …

Long-lived seismic instability of a large intraplate brittle shear zone revealed by distributed slip zones and paleoseismic frictional melt, eastern Botswana

D Mfa, F Kolawole, B Kgosidintsi, R Ajala… - Journal of Structural …, 2025 - Elsevier
In cratonic interiors, long-lived brittle shear zones host records of polyphase deformation,
representing inherited structures that can host damaging earthquakes. Here, we explore the …

[HTML][HTML] Evidence of frictional melting in fault rock drill cuttings from the enhanced geothermal system site in Pohang, South Korea

S Jung, JH Kang, Y Kil, H Jung - Tectonophysics, 2023 - Elsevier
Abstract The 5.5 magnitude (Mw) earthquake in Pohang, South Korea in 2017 was one of
the largest triggered earthquakes at an enhanced geothermal system (EGS) site. Faults that …

[HTML][HTML] 汶川地震假玄武玻璃的特征、 成因及其构造意义

王焕, **海兵, 司家亮, 裴军令, 孙知明, 张蕾 - 岩石学报, 2023 - dzkx.org
富流体的断层泥是浅部地震断层带中的特征岩石. 一般认为, 地震过程中摩擦热会导致粒间孔隙
流体热膨胀增压, 形成同震断层弱化(热增压机制), 从而抑制摩擦熔融的发生. 然而我们研究发现 …

Dynamic evolution of porosity in lower‐crustal faults during the earthquake cycle

SP Michalchuk, S Zertani, F Renard… - Journal of …, 2023 - Wiley Online Library
Earthquake‐induced fracturing of the dry and strong lower crust can transiently increase
permeability for fluids to flow and trigger metamorphic and rheological transformations …