Union-wide
Inter- and Transdisciplinary Sessions
Disciplinary sessions AS–GM
Disciplinary sessions GMPV–TS

Session programme

TS13

TS – Tectonics & Structural Geology

Programme group chair: Claudio Rosenberg

TS13 – Deformation unrelated to regional displacements: salt tectonics, impact geology, magma emplacement

Programme group scientific officer: Claudio Rosenberg

TS13.1

Salt basins present some of the most spectacular geological structures on Earth. They are remarkably important for mineral and hydrocarbon exploration, comprising the world’s largest and most prolific hydrocarbon provinces, as well as for nuclear waste and CO2 repositories. Due to salt’s unique ability to flow as a viscous fluid over typical geological strain-rates, it produces complex and variable deformational styles within sedimentary basins, which are critical for understanding basin evolution and prospectivity. The uniqueness and inherent complexity associated with salt tectonics make it one of the most interesting and challenging topics in basin studies, usually requiring an integrated multi-discipline approach. Recent advances in seismic imaging and modelling (numerical and physical), coupled with a growing database of outcrop analogues have, nonetheless, allowed the development of novel concepts in salt tectonics and more detailed analyses of its kinematics, dynamics, internal deformation and interaction with sedimentation. This session explores the new challenges and advances in salt basins worldwide, from salt deposition to deformation, to improve the current knowledge of salt tectonics and basin evolution. We invite abstracts from a variety of datasets, locations and geological settings, to cover academic and industrial topics including:
• Subsurface, outcrop and modelling studies of salt basins
• Salt tectonics in extensional, contractional and strike-slip settings
• Salt-bearing passive margins
• Evaporite deposition and the interaction between intra-salt lithological heterogeneities on salt deformation.
• Thin- and thick-skinned salt tectonics
• Advances in seismic imaging, processing and interpretation in salt basins globally
• The interaction between halokinesis and sediment routing, minibasin stratigraphy and implications for subsurface energy exploration potential.

Public information:
• We will discuss displays in the order they appear in the programme, which may be different to that shown down the side of the chat.
• All abstracts listed the the session summary will be discussed, if authors are not present we will move on to the next author
• Depending on amount of authors present we will have between 6-8 minutes to discuss each display
• Authors are asked to prepare a short (1-4 sentence) introduction to themselves and their work, following this question will be taken from the floor.
• Time permitting we can return to previous abstracts/displays at the end or have a more broad discussion on the future of salt tectonics.
• We ask authors to promote their presentations and the session on social media etc. using #ShareEGU20 and #saltsaturday

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Convener: Leonardo PichelECSECS | Co-conveners: Zoe CumberpatchECSECS, Oriol Ferrer, Virginie Gaullier, Gaia TravanECSECS
Displays
| Attendance Thu, 07 May, 08:30–10:15 (CEST)
GMPV9.5

The session deals with the documentation and modelling of the tectonic, deformation, and geodetic features of any type of volcanic area, on Earth and in the Solar System. The focus is on advancing our understanding on any type of deformation of active and non-active volcanoes, on the associated behaviours, and the implications for hazards. We welcome contributions based on results from fieldwork, remote-sensing studies, geodetic and geophysical measurements, analytical, analogue and numerical simulations, and laboratory studies of volcanic rocks. We also welcome multidisciplinary studies, especially those that integrate data collected at different scales (e.g. laboratory and field data).
Studies may be focused at the regional scale, investigating the tectonic setting responsible for and controlling volcanic activity, both along divergent and convergent plate boundaries, as well in intraplate settings. At a more local scale, all types of surface deformation in volcanic areas are of interest, such as elastic inflation and deflation, or anelastic processes, including caldera and flank collapses. Deeper, sub-volcanic deformation studies, concerning the emplacement of intrusions, as sills, dikes, and laccoliths, are most welcome.
We also particularly welcome geophysical data aimed at understanding magmatic processes during volcano unrest. These include geodetic studies obtained mainly through GPS and InSAR, as well as studies that model these data to image sources.


The session includes, but is not restricted to, the following topics:
• volcanism and regional tectonics;
• formation of magma chambers, laccoliths, and other intrusions;
• dyke and sill propagation, emplacement, and arrest;
• earthquakes and eruptions;
• caldera collapse, resurgence, and unrest;
• flank collapse;
• volcano deformation monitoring;
• volcano deformation and hazard mitigation;
• volcano unrest;
• mechanical properties of rocks in volcanic areas.

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Co-organized by GD4/NH2/TS13
Convener: Valerio Acocella | Co-conveners: Agust Gudmundsson, Michael Heap, Sigurjon Jonsson, Virginie Pinel
Displays
| Attendance Fri, 08 May, 14:00–15:45 (CEST), Attendance Fri, 08 May, 16:15–18:00 (CEST)