Programme group scientific officers:
Marc De Batist,
Guilhem Amin Douillet,
Open session on stratigraphy, sedimentology and palaeontology
This session offers stratigraphers, sedimentologists and palaeontologists an opportunity to present papers that do not fall within research areas covered by this year's special themes. The poster-only format provides the ideal opportunity to present research specifically targeted to the audience.
During the chat, on Mon 04 May, 10:45–12:30, 4 abstracts with uploaded display material will be open for discussion. The conveners will moderate the chat discussion. We will discuss the abstracts in the order in which they appear in the program. After we call an abstract, we ask the author to provide the chat room with a 1-2 line summary of their work (best to copy-paste a pre-written sentence). Then we can proceed to Q&A. We kindly ask all chat room participants to keep the chat on subject, and not to disrupt the Q&A.
New and re-interpreted Pleistocene sea-level records from around the Globe
Directly observable relative sea-level (RSL) indicators (e.g. shore platforms, coral reef terraces, beach deposits, etc.) are used to constrain paleo sea levels and ice sheet extents and to improve GIA models and future projections of sea-level and ice-sheet responses. Biological proxies associated with and the physical characteristics of RSL indicators can be used to infer paleoclimate and together help inform climatic change and sea-level fluctuations throughout the Pleistocene. The preservation and distribution of these records assists in understanding regional earth surface processes following their deposition.
Recent advances in sea-level studies have called for increased spatiotemporal density of RSL indicators, including submerged and near-field localities, analyzed using standard definitions and methods. This session welcomes contributions to the global record of well-constrained Pleistocene sea-level indicators and associated proxies from a variety of coastal environments, not limited to peak interglacial periods. Re-interpretations of previously described records due to advancement in methods are also welcome.
This session falls within the purview of PALSEA (PALeo constraints on SEA level rise), a PAGES-INQUA Working Group, and the ERC-funded projects, WARMCOASTS and RISeR.
The live chat session will be structured to allow abstract authors, who have uploaded display materials, a specific time slot to chat about their research. Four authors will not be presenting their abstracts. Two of them, Jennifer Walker and Andrei Briceag, have uploaded displays and you are encouraged to initiate chat with them through the abstract link.
The final timetable for the session is below. Time is included for general discussion at the end of the session.
Martina Conti 8:35-8:44
Gino de Gelder 8:45-8:54
Ciro Cerrone 8:55-9:04
Kim Cohen 9:05-9:14
Patrick Boyden 9:15-9:24
Alessio Rovere 9:25-9:34
Teresa Bardaji 9:35-9:44
Carlos Melo 9:45-9:54
Natasha Barlow 9:55-10:04
General Discussion 10:05-10:15
Earth System Paleobiology: closing the geological and biological gap
Information about macroevolutionary history, past biodiversity, ecology, biogeochemical cycles, climate and environmental change is enclosed in the sedimentary rock record. This information can be extracted with traditional palaeontological, sedimentological and geochemical techniques. Nonetheless, preservation, diagenesis, erosion, sea-level changes, sampling strategies, and analytical approaches can distort this information and introduce biases in the reconstructions of past Earth processes. This problem has gained wider recognition with respect to palaeontological patterns, particularly in the field of stratigraphic palaeobiology addressing the impact of the sequence-stratigraphic architecture on fossil data. However, similar aspects can as well alter geochemical proxy records. For example, diagenetic trajectories specific to certain lithologies can dictate stratigraphic patterns in stable and radiogenic isotope as well as (trace) elemental composition. Hence, approaches that correct for these artifacts in palaeontological, sedimentological and geochemical time series might share many commonalities. We invite contributions that use frequentist statistics, Bayesian statistics, mechanistic models, and machine learning to tackle these problems across different timescales and disciplines, ranging from the Precambrian up to the Holocene, and which contribute to a holistic understanding of the Earth system.
The geological information, obtained through traditional palaeontological, sedimentological and geochemical techniques, is often taken at face value. There is little doubt, that there is valuable information about evolutionary history, past biodiversity, ecology, biogeochemical cycles, climate and environmental change is enclosed in the sedimentary rock record. However, preservation, diagenesis, erosion, sea-level changes, sampling strategies, and analytical approaches can distort this information and introduce biases in the reconstructions of past Earth processes. This problem has gained wider recognition with respect to palaeontological patterns, particularly in the field of stratigraphic palaeobiology addressing the impact of the sequence-stratigraphic architecture on fossil data, as well geochemical proxy records. For example, diagenetic trajectories specific to certain lithologies can dictate stratigraphic patterns in stable and radiogenic isotope as well as (trace) elemental composition. Hence, quantitative approaches that correct for these artifacts in palaeontological, sedimentological and geochemical time series might share many commonalities. We herein highlight novel developments, which can greatly contribute to a more holistic understanding of the earth system. Examples range from the Paleozoic up to the Holocene.
This is a short description of how we will handle our session chat. We have allocated at least 4 minutes of time to discuss individual contributions after a brief introduction (5 minutes). We will finish our session with an open discussion (min. 25 min) allowing for more questions for individual talks (if necessary) as well as more general remarks on topics related with our session.
Achievements and perspectives in scientific ocean and continental drilling
Scientific drilling through the International Ocean Discovery Program (IODP) and the International Continental Scientific Drilling Program (ICDP) continues to provide unique opportunities to investigate the workings of the interior of our planet, Earth’s cycles, natural hazards and the distribution of subsurface microbial life. The past and current scientific drilling programs have brought major advances in many multidisciplinary fields of socio-economic relevance, such as climate and ecosystem evolution, palaeoceanography, the deep biosphere, deep crustal and tectonic processes, geodynamics and geohazards. This session invites contributions that present and/or review recent scientific results from deep Earth sampling and monitoring through ocean and continental drilling projects. Furthermore, we encourage contributions that outline perspectives and visions for future drilling projects, in particular projects using a multi-platform approach.
Please find below messages to the international scientific drilling community from Gilbert Camoin (Director of the ECORD Managing Agency) and Marco Bohnhoff (ICDP Executive Director), at this most difficult time resulting from the COVID-19 crisis:
Message from ECORD/IODP, Director ECORD Management Agency:
Science knowledge over the last 50 years of ocean drilling has greatly enhanced our understanding of the Earth system. Since its creation in 2003, ECORD has played a leading role in the successive ocean drilling programmes. During 2019, the scientific ocean drilling community took a unique multi-decadal approach to formulating the future of this international program in the new 2050 Science Framework: Exploring Earth by Scientific Ocean Drilling. The unprecedented health crisis related to the COVID-19 disease outbreak is severely affecting the activities of our programme, but the scientific ocean drilling community remains mobilized for a brighter future. In these different times, I do hope that you and your loved ones will stay safe and healthy.
Message from the ICDP Executive Director Marco Bohnhoff:
COVID-19 is having a huge impact on society as a whole and the personal life of most of us has been turned upside down. However, ICDP is also active in times of COVID-19. A new ICDP Science Plan for the time after 2021 is currently being prepared and will be published in the second half of 2020. For those who submitted drilling or workshop proposals this year: the ICDP Panels will meet online between May 11-16 and decide about your proposals. Good news is also that the COSC-2 drilling is Sweden runs very successful, passing a depth of 500 m on April 30. Whether the ICDP training course can take place in October as planned is currently still open. Please check the ICDP website or our social media channels regularly for updates. I wish you a successful EGU session, stay healthy, and I look forward to seeing you again, hopefully soon.
(Bio)mineral archives of past environmental conditions: from the Precambrian to the present
(Bio)minerals, in particular carbonates (but also others e.g. phosphates), play an essential role in shaping our understanding of the evolution of life and the Earth System, and constitute one of the most important archives of past climatic and environmental conditions. Geochemical, petrographic or crystallographic approaches have yielded new insights into the physico-chemical conditions governing their formation, including through biomineralisation pathways. These capture vital information about the environment and fluid chemistry during precipitation in the form of their specific elemental or isotopic signatures, mineralogies or micromorphologies. Over the past decades, a refined understanding of both biogenic as well as abiotic carbonates and other mineral archives, together with the development of new analytical methods and palaeo-proxies, has led to numerous breakthroughs in palaeoclimate research. However, the quality and reliability of the climatic and environmental information we extract from these records depends, critically, on careful proxy calibrations and the evaluation of secondary controls such as kinetic or vital effects and diagenetic influences. This session seeks contributions from sedimentology, geochemistry, (palaeo)biology, and mineralogy that utilise carbonate or other relevant (bio)minerals to improve our understanding of past environmental conditions over a broad range of timescales, including (but not limited to) microbialites, mollusc shells, coral skeletons or foraminifera. We welcome experimental or theoretical studies dealing with culturing of calcifying organisms, synthetic mineral precipitation, transformation or alteration processes, elemental partitioning or isotopic fractionation (to give but a few examples). The aim of this session is to synthesize recent progress on the investigation as well as application of these important archives, and to showcase methodological advances that will help us to build a more comprehensive understanding of past global changes.
Pedogenic processes of soils and palaeosols across scales - influence of various factors, including imprints of human activities
Soil-forming processes can be observed at various spatial and temporal scales, including molecular - microscopic - pedon - landscape scales, and a similarly wide range of temporal scales. They are influenced not only by the “classical five” soil-forming factors, but also by the factor “humans”. This holds true not only for the industrial period and urbanized areas, but also for palaeopedological and archaeological contexts.
In this session, we seek abstracts on all of these aspects of “soils as records in time and space”:
- soil processes proceeding at different scales, incl. interactions across scales (both spatial and temporal)
- human-induced soil changes (incl. mechanical and chemical changes, as well as the introduction of artificial parent materials)
- advances in understanding weathering mechanisms and mineralogical changes in time and space
- linkages of spatial patterns and processes in soil landscapes over time
- processes taking place on short time scales, thereby contributing to long-term soil changes
- aeolian inputs to soils, implications for soil genesis and ecologically relevant soil properties
- palaeosols and geomorphic features as records of former environments and human activity
- use of soil classification and soil maps, and possibly links to digital soil mapping and novel soil survey techniques such as proximal sensing technologies and detailed digital elevation models.
Automated image recognition in microscopic analysis for stratigraphical investigations
Microscopic analysis of sediment micro fractions requires skilled scientists and is a very time consuming and expensive process. As micro particles are diagnostic of paleoenvironments, sedimentological processes and time ranges (biostratigraphy), image recognition through machine learning holds great potential for automating the identification of microfossils, mineral grains, anthropogenic remnants (micro plastics), and other micro particles. Therefore, automatic image recognition and sorting is likely to render data acquisition more cost- and time-effective, not only increasing traceability and reproducibility but also further reducing identification errors.
The purpose of this session is to gather experts from the geoscientific, engineering, and deep learning communities who are collaborating to apply machine and deep learning techniques to microscopic analysis. Given the novelty of this technique, we encourage contributions addressing development in this field ¬¬– for example, production of training sets, laboratory and camera/video setups/designs, applied robotics, and algorithmic developments. We also welcome any geological studies applying machine learning and numerical approaches (including biometric studies) via image recognition of microscopic images.
Integrating stratigraphy, sedimentology, paleoclimate and human evolution in- and out of Africa?
What role did climate dynamics play in human evolution, the dispersal of Homo sapiens within and beyond the African continent, and key cultural innovations? Were dry spells, stable humid conditions, or rapid climate fluctuations the main driver of human evolution and migration? In order to evaluate the impact that different timescales and magnitudes of climatic shifts might have had on the living conditions of prehistoric humans, we need reliable and continuous reconstructions of paleoenvironmental conditions and fluctuations from the vicinity of paleoanthropological and archaeological sites. The search for the environmental context of human evolution and mobility crucially depends on the interpretation of paleoclimate archives from outcrop geology, lacustrine and marine sediments. Linking archeological data to paleoenvironmental reconstructions and models becomes increasingly important.
As a contribution towards a better understanding of these human-climate interactions the conveners encourage submission of abstracts on their project’s research on (geo)archaeology, paleoecology, paleoclimate, stratigraphy, and paleoenvironmental reconstructions. We especially welcome contributions offering new methods for dealing with difficult archive conditions and dating challenges. We hope this session will appeal to a broad audience by highlighting the latest research on paleoenvironmental reconstructions in the vicinity of key sites of human evolution, showcasing a wide variety of analytical methods, and encouraging collaboration between different research groups. Conceptual models, modelling results and model-data comparisons are warmly welcomed, as collaborative and interdisciplinary research.
Prof. Dr. Andrew Cohen (University of Arizona) will talk on:
Continental scientific drilling: A game changer for understanding ecosystem evolution in Africa.
Dr. Annette Hahn (MARUM, University of Bremen) will talk on:
Driving forces of southern African hydroclimate: integrating source to sink and multi-archive studies.
During the two time slots of our chat, on Fri 8 May, 08:30–10:15 (Block I) and 10:45–12:30 (Block II), all of the -so far- 10 abstracts with uploaded display material will be open for discussion. The conveners will moderate the chat discussion. We will discuss the abstracts in the order in which they appear in the program and within the allocated time slot of the Block. After we call an abstract, we will ask the author to provide the chat room with a 1-2 line summary of their work (best to copy-paste a pre-written sentence). Then we can proceed to Q&A. We kindly ask all chat room participants to keep the chat on subject, and not to disrupt the Q&A.
Kindly try to upload your display no later than Thursday evening, to avoid technical difficulties during the session, and we will also make time to discuss your contribution too. Don't hesitate to share your science!
Climate and Environment Changes and Impact on Civilization development along the Ancient Silk Road
The Ancient Silk Road was one of the most important passages for trans-Eurasia exchange and human migration, which witnessed the rise and fall of ancient civilizations in Central Eurasia. In the central part of the Ancient Silk Road, where the climate condition is extremely dry and the ecosystem is very fragile. The climate and environment changes, especially the water resources change in this area, can significantly influence the spatio-temporal distribution of Ancient Silk Road network, the trans-Eurasia exchange and human migration along the Ancient Silk Road, and the civilization evolution of these ancient cities and towns among the Ancient Silk Road network. This session aims to explore the history of trans-Eurasia exchange, human migration, Ancient Silk Road network spatial change, civilization evolution and climate and environment change, as well as relationship among them in the areas along the Ancient Silk Road. We welcome presentations concerning these issues from multi-disciplinary perspectives, to promote the advancements of research in the field.
Authors are kindly asked to upload display material by Sunday, 26th April, 2020, so that there is one week prior to the online chat for viewing the displays.
Program for the Live Chat on 4th May, 2020, 8.30 - 10.15 CEST (14:30–16:15 PM, Beijing)
14:20–14:30 PM, Beijing Sign in and introduction to session
1. D2537, EGU2020-21976（14:30-14:40 PM, Beijing）
Pollen-based quantitative land-cover reconstruction for northern Asia covering the last 40 ka
Xianyong Cao, Fang Tian, Furong Li, Marie-José Gaillard, Natalia Rudaya, Qinghai Xu, and Ulrike Herzschuh
2. D2539, EGU2020-3185（14:40-14:50 PM, Beijing）
An n-alkane-based Holocene climate reconstruction in the Altai Mountains, northern Xinjiang, China
3. D2542, EGU2020-6328（14:50-15:00 PM, Beijing）
Variation of bacterial communities in Muztagh ice core from 1869 to 2000
Yongqin Liu, Tandong Yao, and Baiqing Xu
4. D2549, EGU2020-13015（15:00-15:10 PM, Beijing）
Changes in the hydrodynamic intensity of Bosten Lake and its impact on early human settlement in the northeastern Tarim Basin, eastern Arid Central Asia
5. D2550, EGU2020-4601（15:10-15:20 PM, Beijing）
Holocene moisture variations in western arid central Asia inferred from loess records from NE Iran
Qiang Wang, Haitao Wei, Farhad Khormali, Leibin Wang, Haichao Xie, Xin Wang, Wei Huang, Jianhui Chen, and Fahu Chen
6. D2551, EGU2020-3196（15:20-15:30 PM, Beijing）
Holocene moisture variations in the Tianshan Mountains and their geographic coherency in the mid-latitude Eurasia: A synthesis of proxy records
7. D2553, EGU2020-5067（15:30-15:40 PM, Beijing）
Mid-late Holocene hydroclimate variation in the source region of the Yangtze River revealed by lake sediment records
Xiaohuan Hou, Lina Liu, Zhe Sun, Xianyong Cao, and Juzhi Hou
8. D2554, EGU2020-4965（15:40-15:50 PM, Beijing）
Late Holocene Varve Chronology and High-Resolution Records of Precipitation in the Central Tibetan Plateau
Kejia Ji, Erlei Zhu, Guoqiang Chu, and Juzhi Hou
9. D2555, EGU2020-3874（15:50-16:00 PM, Beijing）
The forced response of Asian Summer Monsoon precipitation during the past 1500 years
Zhiyuan Wang, Jianglin Wang, Jia Jia, and Jian Liu
Co-production and evolution in human-landscape interaction: from geoarchaeological records to geomorphological dynamics and human influence
Documenting the diversity of human responses and adaptations to climate, landscapes, ecosystems, natural disasters and the changing natural resources availability in different regions of our planet, cross-disciplinary studies in human-landscape interaction provide valuable opportunities to learn from the past. This session is targeted at providing a platform for scientists with common interests in geomorphology and geoarchaeology and, in particular, the complex and integrated nature of the relationship between landforms, geomorphological processes and societies during the Anthropocene, and how this has developed over time at different spatial and temporal scales.
This session seeks related interdisciplinary papers and specific geomorphological or geoarchaeological case-studies that deploy various approaches and tools to address the reconstruction of former and present human-environmental interactions from the Palaeolithic period through the modern. Topics related to records of the Anthropocene from Earth and archaeological science perspectives are welcome. We are inviting contributions that focus on the two-way interactions between geomorphological processes/landforms and human activity. These should show how the various factors of the physical environment interact with the Anthroposphere, and, in turn, how population and individuals may affect (and change) these factors. Furthermore, contributions may include (but are not limited to) insights about how people have coped with environmental disasters or abrupt changes; defining sustainability thresholds for farming or resource exploitation; distinguishing the baseline natural and human contributions to environmental changes. In this context, topics of different fields may be addressed in the session such as landform evolution, landscape sensitivity and resilience in the overall context of the interrelation between geomorphology and society, geohazards, geoheritage and conservation, geomorphological responses to (and evidence for) environmental change, and applied geomorphology. Moreover, issues of scale and hierarchies may be addressed, and methods and applications of dynamic rather than equilibrium ideas and metaphors. Ultimately, we would like to understand how strategies of human resilience and innovation can inform our modern strategies for addressing the challenges of the emerging Anthropocene, a time frame dominated by human modulation of surface geomorphological processes and hydroclimate.
Salt Giants: formation, deformation, and resource potential
Salt giants are evaporite-dominated deposits that reach volumes of up to thousands of cubic kilometers. They are found throughout the geological record, with depositing ranging in age from the Paleo-Proterozoic (~2000 Ma) to the Messinian (~6.0-5.5 Ma). Salt giants are also widespread, being found on all continents and under the seafloor of the Atlantic Ocean, the Mediterranean Sea, the Red Sea, the North Sea, the Baltic Sea, and even in certain areas of the Arctic Ocean. Evaporites carry fingerprints of the chemical properties of the water body from which they precipitated. Their study provides important clues to reconstruct extreme paleoenvironmental conditions. Frequently associated with organic matter, they may be a key element to study deep life but also many petroleum systems and waste repositories due to their low permeabilities and excellent cap rock properties
The unique mechanical and chemical properties of halite, the dominant mineral in most salt giants, impacts many aspects of the related (marine) geology. Syn- and post-depositional viscous flow of salt and density contrasts cause diapirism; non-diapiric salt can act as an intra-stratal detachment surface, ‘lubricating’ sedimentary basins. Despite their great scientific and societal relevance, the origins of many salt giants are poorly understood, as is their subsequent development. This session aims to bring together scientists from various disciplines who work on salt giants of different age, provenance and stage of development. By doing this, we will collectively identify common challenges and possible solutions, and foster interdisciplinary collaboration.
Extreme environments, mud volcanoes and hydrothermal systems on Earth and planetary analogues: biology, stratigraphy, structure, evolution and monitoring of active and fossil settings
This session welcomes contributions from geophysical, geochemical, microbial, numerical, and laboratory studies to promote a better understanding of geological processes and Life in modern and fossil extreme environments, with a special emphasis on mud volcanoes and hydrothermal systems. We encourage multidisciplinary studies related to environments that promoted Life emergence on the Hadean Earth both in past and present extreme terrestrial environments including planetary analogues. We welcome discussion about new approaches to detect and characterise Life in such conditions ranging from biology to geophysics. This also includes geochemical, geological and multidisciplinary datasets investigating piercement structures and their geochemical reactions occurring at depth and at the surface as well as microbiological studies. The session will also discuss the effects of extreme environments on palaeo-climate and how external forcing may affect such systems.
in order to facilitate the exchange of information during the chat session, we have divided the contributions by topics and accordingly we proposed an attendance time (see below). We wish you all a productive EGU conference.
Attendance time: Tuesday, 05 May 08:30–10:15
The effects of climate change on the Atacama Desert as a pertinent Mars analog model
Armando Azua-Bustos and Alberto G. Fairén
A characterization of microbial diversity in the Winter Wonderland Ice Cave, Uinta Mountains, Utah, USA
Miranda Seixas, Erin Eggleston, Jeffrey Munroe, and David Herron
Linking decay of microbial mats and dolomite formation in the sabkhas of Qatar
Zach Diloreto, Maria Dittrich, Tomaso Bontognali, Hamad Al Saad Al Kuwari, and Judith A. McKenzie
The waterbodies of the Dallol volcano: A physico-chemical and geo-microbial survey
Hugo Moors, Miroslav Honty, Carla Smolders, Ann Provoost, Mieke De Craen, and Natalie Leys
Detecting microbial pigments from gypsum using Raman spectroscopy: from field prospection to laboratory studies
Jan Jehlicka, Kateřina Němečková, and Adam Culka
The characteristics of microbial communities along the littoral gradient of a proglacial lake in Qinghai-Tibet Plateau
Meiqing Lu, Xin Luo, Jiu Jimmy Jiao, Hailong li, Xingxing Kuang, Rong Mao, Xiaoyan Shi, and Yuqing Feng
The ferruginous, sulfate-rich hypolimnion of a post-mining lake as an analogue to disentangle redox cycling in Paleoproterozoic coastal zones
Daniel Petráš, Christophe Thomazo, and Stefan Lalonde
Detection of sulphuric life in Mars analogue material using a miniature LIMS system
Andreas Riedo, Valentine Grimaudo, Joost W. Aerts, Alena Cedeño López, Marek Tulej, Pascale Ehrenfreund, and Peter Wurz
Attendance time: Tuesday, 05 May 10:45–12:30
New insights into the magmatic system southeast of El Hierro from high-resolution 2D seismic data
Kai-Frederik Lenz, Felix Gross, Andreas Klügel, Rachel Barrett, Philipp Held, Katja Lindhorst, Paul Wintersteller, and Sebastian Krastel
Earthquake triggering of mud volcanoes and fluid seepage systems in fold-and-thrust belts and subduction zones
Marco Bonini and Daniele Maestrelli
Peculiarities of mud volcanism in Lake Baikal
Grigorii Akhmanov, Adriano Mazzini, Oleg Khlystov, Alina Kudaeva, and Olesia Vidishcheva
Different pockmark systems and their potential importance for the hydrological and biogeochemical balance of a peri-alpine lake
Adeline N.Y. Cojean, Maciej Bartosiewicz, Jeremy Zimmermann, Moritz F. Lehmann, Katrina Kremer, and Stefanie B. Wirth
Internal Structure of Venere Mud Volcano in the Crotone Forearc Basin, Calabrian Arc, Italy, from Multibeam Bathymetry, Wide-Angle and Multichannel Seismic Data
Michael Riedel, Anne Krabbenhoeft, Cord Papenberg, Joerg Bialas, Gerhard Bohrmann, and Silvia Ceramicola
Tectonic structures vs genesis and activity of mud volcanoes: examples from Emilia and Marche (Northern Apennines, Italy)
Marco Bonini, Daniele Maestrelli, and Federico Sani
A shallow mud volcano in the sedimentary basin off the Island of Elba
Alessandra Sciarra, Anna Saroni, Fausto Grassa, Roberta Ivaldi, Maurizio Demarte, Christian Lott, Miriam Weber, Andi Eich, Ettore Cimenti, Francesco Mazzarini, and Massimo Coltorti
Explosive mud volcano eruptions and rafting of mud breccia blocks
Adriano Mazzini, Grigorii Akhmanov, Manga Michael, Alessandra Sciarra, Ayten Khasayeva, and Ibrahim Guliyev
Palynology of Holocene Lake Baikal sediments
Alienor Labes, Adriano Mazzini, Grigorii G. Akhmanov, and Wolfram M. Kürschner
Integrated analysis of geophysical and geochemical data from cold fluid seepage system along the Gydratny Fault (Lake Baikal)
Olesya Vidischeva, Marina Solovyeva, Evgeniya Egoshina, Yana Vasilevskaya, Elena Poludetkina, Grigorii Akhmanov, Oleg Khlystov, and Adriano Mazzini
Geochemistry of oil-and-gas seepage in Lake Baikal: towards understanding fluid migration system
Evgeniya Egoshina, Michail Delengov, Olesya Vidishcheva, Elena Bakay, Natalya Fadeeva, Grigorii Akhmanov, Adriano Mazzini, and Oleg Khlystov
Concentrations and behavior of rare earth elements in mud volcanic waters
Alexey Sobisevich, Valery Ershov, Evgeniy Elovskiy, Elnur Baloglanov, and Irina Puzich
Borate accumulations related to onshore mud volcanism: Case study from the Kerch Peninsula, the Caucasus collision zone
Ellina Sokol, Svetlana Kokh, Olga Kozmenko, and Vasili Lavrushin
Temperature in sedimentary basins: a tool for geodynamics
Temperature is a critical parameter in sedimentary basin evolution. Its distribution through time and space highly contributes to address complex geodynamic topics in different settings through realistic thermal history reconstructions. Conventional thermal modeling constraints derived from the inorganic and organic fraction of sedimentary rocks (vitrinite %Ro, apatite fission-tracks, fluid inclusions, etc.) can be affected by important limitations.
Moreover, fluids circulation in fault zones and sediments is often disregarded. In the last years new modelling approaches, innovative thermo-chronology proxies (carbonate clumped isotopes thermometry coupled with laser ablation U-Pb chronometry) as well as Raman and FT-IR on organic matter and biomarker studies have been widely used to overcome these pitfalls. Aim of the session is to provide a worldwide panorama on sedimentary basins whose geodynamic evolution has been constrained by merging conventional and brand-new calibration techniques and thermal modelling approaches. Contributions on different scale mechanisms, also dealing with uncertainties of fluids and technique validation are warmly welcome and would allow for discussion on technique development and presentation of new pilot data.
Geomorphic and sedimentary records of active tectonics
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.
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.
Schedule for the Live-Chat (Thursday 7th of May)
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
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.
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.
COST Actions in geosciences: breakthrough ideas, research activities and results
The nature of science has changed: it has become more interconnected, collaborative, multidisciplinary, and data intensive. The main aim of this session, now in its third edition, is to create a common space for interdisciplinary scientific discussion where EGU-GA delegates involved in recent and ongoing COST (European Cooperation in Science and Technology)* Actions can share ideas and present the research activities carried out in their networks. The session represents an invaluable opportunity for different Actions and their members to identify possible synergies and establish new collaborations, find novel links between disciplines, and design innovative research approaches. So far, this session has hosted contributions stemming from 26 Actions, covering different areas of the geosciences (sky, earth and subsurface monitoring, terrestrial life and ecosystems, earth's changing climate and natural hazards, sustainable management of resources and urban development, environmental contaminants, and big data); we are looking forward to receiving new contributions this year.
Same as in past editions, part of this session will be dedicated to presenting and discussing activities carried out in further national and international scientific networks, associations, and collaborative projects.
Moreover, this session is of course open to everyone and abstracts authored by individual scientists or small research teams are most welcome, too. Actually, in 2018 and 2019 we received a very good number of such abstracts, submitted by researchers who wanted to disseminate the results of their studies in front of the multidisciplinary audience that characterizes this session, as an alternative to making a presentation in a thematic session. In fact, contributing to this session can be a productive way to broaden the perspective and find new partners for future interdisciplinary research ventures.
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* COST (www.cost.eu) is funded by the EU and enables researchers to set up their interdisciplinary and international scientific networks (the “Actions”). Academia, industry, public- and private-sector laboratories work together in the Actions, sharing knowledge, leveraging diversity, and pulling resources. Every Action has a main objective, defined goals and deliverables. This session is a follow-up initiative of COST Action TU1208 “Civil engineering applications of Ground Penetrating Radar” (www.gpradar.eu).