Shear zones as expressions of strain localization shape rocks from the micron- to the plate tectonic scale, influencing both viscous and brittle deformation systems. Strain localization across multiple scales is a complex process in any tectonic environment, and often still poorly understood. In many cases, strain localization involves feedback between mechanical, chemical and hydraulic processes that control the rheological evolution of deforming rocks. During strain localization, mylonites in shear zones evolve their fabrics, grain sizes and compositions, leading to changes in deformation mechanisms and mechanical properties. At one extreme, brittle fracturing and faulting may be coupled to shear zone processes, as evidenced by high-temperature fracturing, lower crustal earthquake nucleation, and deep fracture-controlled fluid pathways. Cyclical interplay between brittle and viscous deformation regimes may also occur. Whatever the deformation mechanism, shear zones constitute either barriers to or conduits for fluid flow, which emphasizes the significance of their dynamic transport properties.
This session seeks to illuminate deformation, metamorphic and transport processes in shear zones via a wide range of methodological approaches, including field- and microscale studies, numerical and analogue modelling approaches as well as rock deformation experiments and aims to present the latest advances in our understanding of shear zones and associated faulting. We particularly encourage early career researchers to present their findings.

Convener: Florian Fusseis | Co-conveners: Lucy Campbell, Sarah Incel, Livia Nardini, Michael Stipp
| Mon, 08 Apr, 10:45–12:30
Room 1.61
| Attendance Mon, 08 Apr, 16:15–18:00
Hall X2

Attendance time: Monday, 8 April 2019, 16:15–18:00 | Hall X2

X2.103 |
| presentation
Estelle Ledoux, Jacques Précigout, and Laurent Arbaret
X2.104 |
Jana Schierjott, Marcel Thielmann, Gregor Golabek, Antoine Rozel, and Taras Gerya
X2.105 |
Nicolas Mansard, Holger Stünitz, Hugues Raimbourg, and Jacques Précigout
X2.107 |
Maximilian Döhmann, Sascha Brune, Livia Nardini, Erik Rybacki, and Georg Dresen
X2.108 |
Pamela Speciale, Whitney Behr, and Greg Hirth
X2.109 |
Livia Nardini, Erik Rybacki, Maximilian Döhmann, Luiz Morales, Sascha Brune, and Georg Dresen
X2.110 |
Giulia Fedrizzi, Manuele Faccenda, and Giorgio Pennacchioni
X2.112 |
Michel Bestmann, Giorgio Pennacchioni, and Bernhard Grasemann
X2.116 |
A note to a land-surface trace of diagonal strain tensor after an earthquake shock
(withdrawn after no-show)
Shigehisa Nakamura