The coupling between tectonics, climate and surface processes governs the dynamics of mountain belts and basins. First order constraints on this coupling are provided by geomorphic and sedimentary records, including longitudinal river profiles, fluvial terraces, downstream fining trends, growth strata, sediment provenance, sequence stratigraphy, and changing depositional environments. Moreover, the increasing integration of geochronological methods for quantifying erosion rates and source-to-sink sediment transfer with landscape evolution, stratigraphic, climatic, and tectonic models allows to advance our understanding of the interactions between surface processes, climate and tectonic deformation.

We invite contributions that use geomorphic and/or sedimentary records to understand tectonic deformation, climate histories, and surface processes, and welcome studies that address their interactions and couplings at a range of spatial and temporal scales. In particular, we encourage coupled catchment-basin studies that take advantage of numerical/physical modelling, geochemical tools for quantifying rates of surface processes (cosmogenic nuclides, low-temperature thermochronology, luminescence dating) and high resolution digital topographic and subsurface data. We also encourage field or subsurface structural and geomorphic studies of landscape evolution, sedimentary patterns and provenance in deformed settings, and invite contributions that address the role of surface processes in modulating rates of deformation and tectonic style, or of tectonics modulating the response of landscapes to climate change.

Orogenic plateaus and their margins are integral parts of modern mountain ranges and offer unique opportunities to study the feedback between tectonics and climate through the Earth’s surface. Complex interactions and feedbacks occur among a wide range of parameters, including crustal and deep-seated deformation, basin growth, uplift, precipitation and erosion, landscape and biological change; and lead to (i) the growth, recycling, and destruction of the lithosphere; (ii) shifts in surface elevation; and (iii) high topography that can affect atmospheric circulation. These controlling factors result in plateau lateral growth and its characteristic morpho-climatic domains: humid, high-relief margins that contrast with (semi-)arid, low-relief plateau interiors.

This session aims at creating a discussion forum on the complex interactions and feedbacks among climatic, surficial and geodynamic processes that challenge the notion of a comprehensive mechanism for surface uplift and topographic growth in orogenic plateaus and their margins. To fuel the exchange, we welcome studies of orogenic plateaus worldwide at various scales, from the Earth’s mantle and crust to its surface and atmosphere. We particularly encourage contributions that aim at bridging temporal and spatial gaps between datasets using an interdisciplinary approach or novel techniques.

Geologic processes are generally too slow, too rare, or too deep to be observed in-situ and to be monitored with a resolution high enough to understand their dynamics. Analogue experiments and numerical simulation have thus become an integral part of the Earth explorer's toolbox to select, formulate, and test hypotheses on the origin and evolution of geological phenomena.

To foster synergy between the rather independently evolving experimentalists and modellers we provide a multi-disciplinary platform to discuss research on tectonics, structural geology, rock mechanics, geodynamics, volcanology, geomorphology, and sedimentology.

We therefore invite contributions demonstrating the state-of-the-art in analogue and numerical / analytical modelling on a variety of spatial and temporal scales, varying from earthquakes, landslides and volcanic eruptions to sedimentary processes, plate tectonics and landscape evolution. We especially welcome those presentations that discuss model strengths and weaknesses, challenge the existing limits, or compare/combine the different modelling techniques to realistically simulate and better understand the Earth's behaviour.

Public information:
TS10.3/GD10.5/GM9.6
Analogue and numerical modelling of tectonic processes

By: Frank Zwaan, Fabio Corbi, Ágnes Király, Valentina Magni, Michael Rudolf
Link: https://meetingorganizer.copernicus.org/EGU2020/session/34918
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Dear participants of EGU session TS10.3 on modelling of tectonic processes,

We will start the discussion at 10:45 CET on Monday 4 May, and it will last until 12:30 CET, although the chat will remain active for 30 min more.

This is how we plan to carry on the session:

• Every contribution will get about 5-10 minutes of discussion
• The conveners will introduce the contribution (title, authors,..)
• The presenting authors will give a short summary/introduction (2-3 sentences) of their work (@ authors, please prepare these in advance to ensure a smooth transition).
• Discussion with participants


If time permits, we will have a more general discussion after all contributions have been presented.

Here’s the order of the presentations:

• Withers & Cruden
• Hughes et al.
• Noguera & Marques
• Schöfish et al.
• Mannu et al.
• Maestrelli et al.
• Avila-Paez et al.
• Wang et al.
• Saha et al.
• Henriquet et al.
• Jiménez-Bonilla et al.

We are looking forward to meeting you in the session chat box!

Plate tectonic processes and associated rates of deformation can be quantified using geomorphological and sedimentary evidence in actively deformed landscapes. A variety of geomorphic markers (e.g., topography and rivers, fluvial deposits, marine terraces) and sedimentary archives (e.g., syntectonic sedimentation, stratigraphic evidence) can be used to constrain rates and dates of tectonic deformation and its processes. Any of these and their combinations, when used in key natural laboratories at adequate time spans, can provide essential clues to understand the tectonic activity and large-scale geodynamic evolution of tectonic plates, and unravel the dynamic changes and tip-points in plate boundary conditions.

We invite contributions that aim to understand the dynamics and evolution of active plate boundaries and deforming plate interiors through geomorphic and/or sedimentary evidence. We welcome all types of studies regardless of their methodology, and especially interdisciplinary efforts, that use geomorphic and sedimentary records to quantify the rates of active deformation and tectonic events, at key sites and across various spatial and temporal scales.

Public information:
Welcome everyone to “Geomorphic and sedimentary records of active tectonics” [TS12.1]!
Thank you for attending!

We, the conveners, would like to thank all contributing authors, and in particular, everyone who uploaded a Display. We really appreciate it!

The life-chat will start at 10.45 and we will continue to discuss Displays until 12.30.
Thereafter, the chat will remain open for discussion if you want.

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Schedule for the Live-Chat (Thursday 7th of May)

10:45-10:50 Introduction
10:50-10:57 Ed Rhodes
10:57-11:04 Rajeeb Lochan Mishra
11:04-11:11 Paul Zemann
11:11-11:18 Bernhard Salcher
11:18-11:25 Oswald Malcles
11:25-11:32 Tarik Kernif
11:32-11:39 Haralambos Kranis
11:39-11:46 Roland Freisleben
11:46-11:53 Hao Liang
11:53-12:00 Ping Huang
12:00-12:07 Gerben de Jager
12:07-12:14 Debora Duarte
12:14-12:21 Shao-I Kao
12:21-12:30 Final Discussion

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We would like to organize the session as follows:

- A ca. 7 min time slot will be allocated to each of the 13 contributors that have uploaded a Display This should not only allow for some discussion of the Displays but also leave 10 minutes at the end of the session for the discussion of remaining questions.

- The conveners introduce the contribution

- The presenting author shortly introduces the Display (@authors, please prepare these in advance to ensure a smooth transition and include your email address!)

- Discussion with participants starts
For questions, please use @name to address the correct person.