Proposed Sessions

 

Topic 1: Early Earth

ID: 109 — Tracing life through deep time: New approaches & fresh perspectives

Joachim Reitner, Jan-Peter Duda — University of Göttingen Faculty of Geoscience, Germany

Current “geobiological” research on early life commonly focuses on the reconstruction of large-scale environmental conditions on Earth. The fundamental impact of life on its environments, on the other hand, is commonly neglected. This unidirectional perspective clearly limits our understanding of habitability and the evolution of life through geological time. We aim at challenging this dogma by inviting contributions on the reconstruction of life at any time in Earth’s history – independent of the approach or viewpoint. We particularly encourage progressive and provocative studies that will help to stimulate discussion and debate across conventional disciplines.

Topic 2: 50 years of plate tectonics

ID: 103 — InterRidge: Multidisciplinary research on oceanic ridges

Philipp A. Brandl1, Wolfgang Bach21GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel; 2MARUM, Universität Bremen

Oceanic ridges play a key role for global plate tectonics and elemental cycles, connecting litho-, hydro- and biosphere. However, many of the complex interconnections of magmatic, tectonic, hydrothermal and biological processes in oceanic ridges remain poorly understood. Multidisciplinary research approaches are required to gain critical new insights that help better constrain the processes and consequences of ocean crust formation and evolution. These studies are essential, as oceanic ridges have recently come into focus of scientists and policy makers with respect to their potential for polymetallic mineral deposits that may help secure future metal supply. This session invites contributions from all earth and ocean science disciplines (from seismology to economic geology to geobiology) in order to assess the state-of-the-art perspective on oceanic ridges and to discuss new multidisciplinary approaches of ridge research in both active and fossil systems, including ophiolites.

Topics 3: Mountain building from depth to surface

ID: 125 — “Investigating mountains with a microscope”: How microscale studies contribute to the understanding of mountain building processes

Valby van Schijndel, Silvio Ferrero University of Potsdam, Germany

H.C. Sorby was criticized in the 19th century for “examin(ing) mountains with microscopes”. One hundred and fifty years later microscale investigation of metamorphic rocks is beyond doubt one of the most fundamental tools to understand the continuous changes of the living Earth. Mountain building proceeds via geodynamic processes which induce changes in texture, mineral assemblage and mineral composition in metamorphic rocks. Their correct interpretation is crucial for unravelling the complex evolution of collisional belts. Moreover, mineral relics, e.g. coesite and diamonds inclusions, are sometimes the only way to reconstruct the deepest history of their host rocks, while petrochronology provides the constraints necessary to quantify the timing at which these processes occur. In this session, we would like to invite contributions in the broad fields of microstructural, microchemical and petrochronological studies of metamorphic rocks equilibrated from low grade to ultrahigh-pressure conditions. In particular we welcome studies involving quantitative microscale mapping, thermodynamic modeling, geochronology, elemental diffusion and geospeedometry, stable isotope investigations and fluid/melt inclusion analyses.

 

ID: 126 — The Eastern Mediterranean: A natural laboratory to study orogenic processes operating at different times and at different structural levels

Gernold Zulauf1, Paris Xypolias2, Timur Ustaömer3 1Goethe Universität, Frankfurt a.M., Germany; 2Patras University, Patras, Greece; 3Istanbul University, Istanbul, Turkey

The plate tectonic framework for the modern tectonic setting of the Eastern Mediterranean was established in the 1970th. Since this time, our knowledge about the opening and closure of Paleo- and Neotethys, the formation of ophiolites, the role of transform tectonics and the exhumation of deeply subducted rocks increased significantly. The recent introduction of fast techniques in radiometric age dating further improved the reconstructions of ancient plate configurations, the latter resulting from Cadomian, Variscan, Cimmerian and Alpine orogenic processes. The imprints of these different orogenic cycles, together with the still active orogenic processes in the Eastern Mediterranean, make the latter a key area to study fundamental orogenic processes (subduction, accretion, collision, exhumation) and the interaction of sedimentary, tectonic, metamorphic and igneous processes through time. Papers dealing with these topics are invited.

Topic 5: Sedimentary systems

ID: 105 — Temperature and fluid dynamics in sedimentary basins

Rüdiger Lutz1, Ralf Littke2, Lorenz Schwark31Federal Institute for Geosciences and Natural Resources (BGR); 2Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen; 3Institute of Geoscience, Kiel University

Sedimentary basins contain the vast majority of all energy resources, including coal, petroleum, natural gas and are also the most important storage site for anthropogenic solids and fluids. During basin evolution organic matter-rich sediments and sedimentary rocks are exposed to changing pressure and temperature conditions, which lead to mineralogical and geochemical reactions. Systematic and innovative studies on rock properties, laboratory experiments under well-defined physical and chemical conditions as well as numerical modelling are required to determine rates of transformation, but also fluid flow at different scales.

We invite contributions to this session dealing with sedimentary systems and their constituent elements. We welcome basin modeling studies from crustal to reservoir scale, studies on various aspects of the petroleum system, e.g. source rock deposition, maturation, petroleum generation, expulsion and biodegradation, studies on temperature and heat flow evolution in sedimentary systems based on petrological, mineralogical, and geochemical data as well as studies on porosity and permeability evolution, transport and storage of fluids.

 

ID: 110 — Young Sedimentologists

Michaela Spiske1, Ulrich Heimhofer2 1Geozentrum, Universität Trier, Germany; 2Leibniz University Hannover, Germany

The organizers encourage submission of abstracts in all fields of sedimentology and sedimentary geology. The session aims at bringing together young researchers from various disciplines of sedimentary research in order to stimulate and promote discussion and exchange among the next generation of sedimentologists. The “Young Sedimentologists” session invites young scientists to present their completed or ongoing research work, i.e. results of their M.Sc. or data gained during their PhD thesis. The session is sponsored by the SEPM-Central European Section and continues the tradition of the SEDIMENT meetings. Both poster presentations and oral talks are welcome. The most innovative and inspiring oral contribution will be awarded with the “Young Sedimentologists” presentation award in form of a book price sponsored by SPRINGER.

 

ID: 112 — Advanced techniques and case studies in sedimentary provenance analysis

Tom McCann1, Matthias Hinderer2, Hilmmar von Eynatten3 1Uni Bonn, Germany; 2TU Darmstadt, Germany; 3Uni Göttingen, Germany

This session welcomes contributions from studies using advanced and/or novel techniques to investigate sedimentary provenance analysis. In recent years, there have been many advances in this area, particularly involving the areas of geochemistry and isotopic analysis examining both bulk compositions and increasingly single minerals. Such analytical techniques, or combined/integrated approaches where individual case studies are presented, will be showcased in this session. We invite contributions from a range of scientists working in the area - from sedimentologists through to geochemists - to present new and provocative work in this session.

 

ID: 113 — Tectonics & Sedimentation - From Fractures to Basins

Tom McCann, Linda Prinz Steinmann Institute, Uni Bonn, Germany

Sedimentary basins, and the depositional successions within them, provide the most tangible and accessible records of the lithospheric, geographic, oceanographic and ecological developments which occur in a specific area over a specific period of time. Tectonic activity, on a range of scales, is a major control on sedimentary activity. This session welcomes contributions examing the interaction of sedimentation and tectonic activity on a range of scales, from post-depositional injection processes through to the large-scale control of facies architecture in basin systems.

 

ID: 114 — Oceanic oxygen throughout earth history

Jacek Raddatz1, Wolfgang Rübsam2 1Institute of Geosciences, Goethe University Frankfurt, Germany; 2Institute of Geosciences, University of Kiel, Germany

Oxygen is necessary to support (most of) life in the oceans. Half of the oxygen we breathe is produced by phytoplankton in the oceans, thus highlighting the importance of oceanic oxygen especially under recent climate change, where oceanic oxygen is progressively decreasing. Even though oxygen is so important for the oceans interior and marine ecosystems its variability throughout Earth History is still a matter of debate. Nevertheless, the importance of ocean oxygenation is also highlighted by the fact that major Phanerozoic mass extinction events were accompanied by widespread shelf sea/ocean anoxia.

We aim to improve our understanding of ocean oxygenation and deoxygenation, as well as of underlying Earth System processes, and therefore invite contributions dealing with (geochemical) proxy development as well as paleoceanographic reconstructions of oceanic oxygen covering the entire Earth History.

 

ID: 117 — Quaternary Geochronology and Earth Surface Processes

Silke Mechernich1, Dominik Brill2 1Institute of Geology and Mineralogy, University of Cologne, Germany; 2Institute of Geography, University of Cologne, Germany

Precise and accurate chronologies form the basis to quantify earth surface processes and to relate environmental changes to climate, tectonic and/or isostatic processes. In recent years, significant advances were achieved for various Quaternary dating approaches leading to an improved reliability and the development of new methods and applications.

In this session, we particularly welcome both methodic and applied contributions that focus on all kinds of Quaternary dating methods. This covers studies concerning (1) the reduction of dating uncertainties, (2) the establishment of new dating methods, and/or (3) the quantification of rates of surface processes. We highly welcome resulting interpretations of such quantifications (e.g. chronologies of environmental change, long-term landscape evolution).

 

ID: 120 — Integrated chemostratigraphy and applications

André Bornemann, Jochen Erbacher Bundesanstalt für Geowisenschaften und Rohstoffe, Germany

Sedimentary rocks are not only of enormous economic interest as resources or as places for surface and subsurface storage, but also represent important geological archives of paleoenvironmental and biotic changes. Studies of the physicochemical properties of sedimentary rocks for applied purposes as well as detailed paleoenvironmental studies of different intervals in Earth history rely both heavily on the quality of age control and the integrated application of proxy data. Over the last two decades high-resolution chemostratigraphy based on stable isotopes or XRF core scanning in combination with astronomical tuning and integrated biostratigraphy allowed for the establishment of a robust high resolution stratigraphy of the Cenozoic era, but also for Mesozoic and Paleozoic strata the stratigraphic accuracy is slowly improving. For this session we invite interdisciplinary contributions that provide new clues about chemostratigraphy and the integration of other stratigraphic disciplines such as biostratigraphy, cyclostratigraphy or sequence stratigraphy in order to advance our knowledge about stratigraphic accuracy and correlation.

 

ID: 128 — Marine carbonate cementation – processes, structures and geological implications

André Wizemann, Thomas Mann Leibniz Centre for Tropical Marine Research, Germany

Marine carbonate cementation is a phenomenon responsible for the accumulation and consolidation of sedimentary bioclasts in tropical and up to the polar oceans. Differences in composition, geometry and spatial extent of carbonate sediment bodies determine categories of different carbonate rock types and systems such as beach rocks, mud mounds or platforms. Thereby carbonate sediment cementation depends on the environmental conditions – on the carbon chemistry of the seawater and the resulting seawater carbonate saturation state. However, besides the chemical seawater parameters that drive calcium carbonate cementation in a quasi-abiotic way it is also well recognized that organic extra-polymeric substances, such as polysaccharides, proteins and enzymes, facilitate the formation of calcium carbonate cement growth – and in certain environments may even play the dominant role for cementation. Marine cementation thus may often not be solely the result of chemically driven direct precipitation of calcium carbonate out of the seawater – the accumulation and nucleation due to organics, and re-precipitation and recrystallization of carbonates under biological activity are likewise and simultaneously possible. This session invites contributions covering all aspects of marine carbonate cementation. We seek to combine studies dealing with the fundamental processes of carbonate cementation deciphering the abiotic and biotic controls, as well as with its implications for the reconstruction of environmental settings, ranging from macro- to microfacies studies and from recent to deep time.

 

ID: 129 — Loess systems and the reconstruction of Pleistocene climate dynamics

Ulrich Hambach1, Peter Fischer2, Christian Zeeden3, Igor Obreht4, Daniel Veres5 1BayCEER & Chair of Geomorphology, University of Bayreuth, Germany; 2Institute for Geography, University of Mainz, Germany; 3IMCCE, Observatoire de Paris, France; 4MARUM-Center for Marine Environmental Sciences and Department of Geosciences, University of Bremen; 5Institute of Speleology, Romanian Academy, Romania

Loess-paleosol sequences are the most extensive terrestrial paleoclimate records in Europe and Asia documenting atmospheric circulation patterns, vegetation, and sedimentary dynamics in response to glacial-interglacial and potentially sub-orbital climatic cyclicity. Assessment of common patterns and differences in these terrestrial paleoclimatic records is crucial for the understanding of Eurasian climate evolution. This represents a major challenge for understanding the interaction and evolution of Northern Hemisphere climate systems over the continental areas, and also their relation to marine and other proxy records and reference datasets, including orbital and greenhouse gas forcing. During the last decades, beside grain size environmental magnetic parameters (e.g. magnetic susceptibility, MS) have been recognized as fundamental paleoclimate proxies for Eurasian loess-paleosol sequences (LPS). MS has been employed as stratigraphic tool, facilitating correlations between terrestrial deposits and the marine isotopic record, ice core, and lacustrine records, suggesting a close interconnection between dust deposition, global ice volume, and global climate. In recent years, detailed and high resolution studies on faunal and floral remains, biomarkers, and stable isotopes provided new and powerful proxies for the reconstruction of regional and local temporal environmental dynamics from LPS in Eurasia.

This session aims to highlight integrative paleoclimate research on LPS closely integrating sedimentological research with paleoclimate and environmental sciences, by focusing on the development of new environmental proxies, contextualization of sedimentary environments and integration of numerical dating results (luminescence, radiocarbon, tephrochronology). We especially encourage submitting papers on the integration of different disciplines and on modelling of past and present climates using data from loess-paleosol records.

 

ID: 134 — Marine Systems: Sedimentary environments and processes from the continental shelf to the deep-marine sink

Florian Pohl, Mike Tilston, Yvonne Spychala Utrecht University, The Netherlands

The deep marine is the biggest repository for terrestrially weathered siliciclastic sediment and organic carbon that are transported beyond the near-shore environment. By sequestering large volumes of organic carbon, the oceans have a significant impact on the climate system of the earth. Furthermore, marine deposits have become a focus of attention in exploration of hydrocarbons or mineral ores due to the progressive depletion of conventional onshore reservoirs. Consequently, there are strong environmental and economic rationales why these systems merit intensive scientific research efforts. Yet despite their significance, the surface of the moon is better known than the floor of the oceans due to the latter being poorly accessible, hostile and dark environment, which hampers rigorous investigation. As such, the deep marine is not understood in a sufficient way, and the processes controlling these systems is largely speculative.

We welcome contributions on all aspects of marine sedimentary system going from the continental shelf to the deep-marine abyssal plane which improves our understanding of the architecture and the processes of all sedimentary system in the oceans. This session will explore a range fields including, but not limited to: studies on ancient marine systems (field and seismic studies), morphodynamics of the ocean floor, direct monitoring of present day natural systems as well as physical experiments and numerical modelling of flow processes.

Topic 6: Neotectonics, earthquakes, and natural hazards

ID: 104 — Natural Hazards: earthquakes, tsunamis, landslides

Klaus Reicherter1, Gösta Hoffmann2, Lothar Schrott3, Silke Mechernich4, Christoph Grützner51RWTH Aachen University, Germany; 2Univ. Bonn, Germany; 3Univ. Bonn, Germany; 4Univ. zu Köln, Germany; 5Univ. Jena, Germany

Natural hazards are not necessarily catastrophes, however, if they concern man, society and the environment they become a risk. Natural hazards have always occurred in the system Earth and need to be evaluated cautiously in space (local, regional, global), time (duration, date), intensity and recurrence interval.

We ask for contributions of natural hazards studies that recognize, evaluate and eventually manage past and future hazards affecting Earth and society, especially in times of generally accepted climate change.

Earthquakes, tsunamis, mass movements (landslides) and subsidence as well as climate extremes (e.g. wave events, storm surges) are major topics concerning our session along with long-term studies e.g. on neotectonics, paleoseismology, archeoseismology and related topics.

Topic 7: Mineralogy, material science of the Earth

ID: 108 — Advances in chemical and isotope analysis

Frank Wombacher1, Markus Lagos2 — 1Universität zu Köln, Germany; 2Universität Bonn, Germany

We welcome contributions concerning the advancement of methods for chemical and isotope analyses on all scales, as well as applications from all fields of Earth sciences if they take advantage from improved analytical methods.

 

ID: 135 — Atomic to macroscale ordering in low-temperature environments

Ralf Milke, Moritz Liesegang Freie Universität Berlin, Germany

Low-temperature ordering phenomena induce crystallization from a liquid or colloidal phase into crystals based on atomic units, as well as crystals based on photonic units or higher-order geologic remains such as fossils or geometrically structured concretions. Silica, calcium carbonate, and iron hydroxide are just a few substances that got into focus. We address all researchers working in the fields of classical crystallization by atomic particles, non-classical crystallization involving larger building units, or in dissolution studies regarding related mechanisms in the opposite way. We invite contributions ranging from experimental and theoretical work to analysis of natural geomaterials. This session aims to bring together researchers that identify micro- to nanoscale crystallization processes from a multitude of precursors and seeks to integrate modern concepts into fundamental mineralogical and geological processes.

 

ID: 136 — Minerals and Materials: Properties and Structures

Reinhard X. Fischer1, Jürgen Schreuer2 1Universität Bremen, Germany; 2Ruhr-Universität Bochum

This session covers the synthesis and physicochemical characterization of minerals and inorganic materials. All contributions are invited which are related to crystallization processes, physical and chemical properties of crystals, and the description of the crystal structures of minerals and their materials analogues. Minerals like, e.g., zeolites, are important compounds with various utilizations. They also serve as model systems to better understand the properties of technical compounds. Thus, their characterization by various powerful methods is of major importance in materials chemistry and mineralogy.

Topics 8: Groundwater resources and climate change

ID: 131 — Groundwater and climate change

Traugott J. Scheytt1, Joannes Barth2 1FH-DGGV Technische Universität Berlin, Germany; 2IAH German Chapter, Friedrich-Alexander-Universität Erlangen, Germany

Climate change has the potential to impact all parts of the hydrological cycle. Increase of average temperature, a shift of precipitation both spatially as well as temporally, lower snow coverage, more extreme precipitation events and an increased duration of vegetation will result in changes of groundwater recharge. This will impact drinking water management especailly for critical areas and will have long-term effects on general water management. We are seeking contributions from various scientific fields on questions including but not limited to 1) Does the climate change already have an effect on groundwater? 2) Will groundwater levels change in the future and if so in which way? 3) What kind of groundwater and water resources management as to be adopted? 4) What consequences may be inferred on groundwater - surface water interactions?

Topic 9: Earth materials, resources, and waste management

ID: 102 — Waste Mineralogy - Mineralogical Issues in Waste Management

Daniel Höllen — Montanuniversität Leoben, Austria

Mineral wastes like excavated and contaminated soil, construction and demolition waste and ashes from waste (incl. sewage sludge), biomass and fossil fuel incineration as well as industrial residues (wastes & by-products) like slags, dusts and sludges represent the largest material flows in waste management.

These secondary resources contain a broad range of chemical elements like (heavy) metals which are investigated either with respect to their possible recovery by physical, chemical or biological methods and/or with respect to their release into the environmental media water, air and soil during treatment, disposal, re-use or recycling.

The recovery and release of these elements from mineral wastes and by-products is significantly influenced by the mineral phases in which the elements are incorporated. A fundamental understanding of the relationship between mineralogy and mobility of chemical elements allows to tailor the recyclability of mineral waste either towards higher metal recovery by increased leachability or towards applications as construction material by decreased leachability.

This session addresses contributions from the intersection of mineralogy and waste management which include but are not limited to the following areas:

  • Mineralogy and mobility of metals in contaminated soils
  • Immobilisation of contaminants in storage minerals
  • Mineralogy of fine fractions in landfills and its impact on landfill aftercare and landfill mining
  • Asbestos and artificial mineral fibres in construction and demolition waste
  • Mineralogy of municpal solid waste incineration residues and its impact on metal recovery and leaching
  • Mineralogical aspects of phosphorous recovery from sewage sludge ashes
  • Bioavailability of contaminants and nutrients in biomass ashes
  • Alternative binders from residues of thermal processes including the fate of heavy metals during hydration
  • Distribution of trace elements between mineral phases during incineration and metallurgical processes
  • Mineralogy and leachability of steel slags
  • Recovery of (critical) metals from metallurgical residues

 

ID: 111 — Session: Geology of unconventional resources of critical raw materials

Torsten Graupner1, Dennis Krämer2, Mathias Burisch3, Marta Sosnicka4 1BGR Hannover, Germany; 2Jacobs University Bremen, Germany; 3TU Bergakademie Freiberg, Germany; 4GFZ Potsdam, Germany

The transition of our society towards the increased usage of climate-friendly technologies forms one of the major challenges of the next decades. Major points are the consolidation of an energy system relying to increased parts on renewable resources and the development of e-mobility. Consequently, the increasing demand for technology-critical strategic metals (e.g. Co, Li, Ge, Ga, Sb, Sn, Cu, Nb, Ta, as well as REE and PGE) has led to a misbalance between supply and demand, and the depen-dence on single suppliers has added significant supply risk. Since to date the supply of strategic metals cannot be secured by recycling, supply from new ore deposits is needed in the near future. This requires continuous exploration for ore deposits and related research and technology development for exploration, efficient and eco-friendly mining and ore processing, parti-cularly of unconventional resources. We invite contributions that address this field of ore deposit research and particularly en-courage contributions from projects funded within the BMBF r4 framework.

 

ID: 116 — Magmatic Ore Deposits

Lennart Alexander Fischer1, Malte Junge2, Felix Kaufmann3 1Leibniz Universität Hannover; 2Albert-Ludwigs-Universität Freiburg; 3Museum für Naturkunde Berlin

The constant development in technology and the worldwide increasing standard of living, leads to continuous demand for metals. The understanding of existing as well as exploration for new ore deposits is therefore an important contribution to our society. Magmatic ore deposits cover a wide range of magmatic settings from dynamic MOR, back-arc systems, granite-related deposits to layered intrusions. These include rock types such as pegmatites, carbonatites and ultramafic-rocks, implying a vast number of ore formation processes. To understand the petrogenesis of magmatic ore deposits it is important to identify and explain ore formation processes including magma mixing, liquid immiscibility, crystal fractionation, partial melting, alteration and interaction with hydrous fluids. The diversity of different magmatic ore deposits provides the opportunity to study field relations, magmatic processes and mineralogy by using analytical tools, such as EPMA, LA-ICP-MS and isotope studies. We invite contributions from studies of natural rocks, experiments and numerical modelling in the field of magmatic ore deposits.

 

ID: 124 — Geophysics and the new “Standortauswahlgesetz”

Christian Buecker1, Andreas Schuck2 1DEA Deutsche Erdoel AG, Germany; 2GGL Geophysik und Geotechnik Leipzig GmbH

The search for radioactive waste deposits has been given a restart with the amendment to an act called “Standortauswahlgesetz” by the Bundesrat. Goal of this new act is a science-based, transparent, self-questioning and -learning selection procedure to find a new location for radioactive waste for final storage at highest safety. Host rocks can be Salt, Clay, and Granite in depth from 300 m to 1500 m. In the sense of an unprejudiced approach in finding suited locations, Germany will be seen as a “white landscape”.

Geophysics in particular will play an essential role in this context. In this session talks on geophysical standards and procedures as well as proposals for new exploration and monitoring methods are welcomed. The content of the session will be guided by the following questions:

  • What is the contribution of Geophysics, in particular Applied Geophysics for the above ground and subsurface exploration?
  • What is the current status of geophysical exploration and monitoring of already existing radioactive waste disposals?
  • Which geophysical procedures are best suited for the exploration of locations, what is the need for R&D?
  • What is the role and relevance of Geophysics in the framework of a comprehensive geoscientific exploration?

 

ID: 137 — Geosciences for the safe management of nuclear waste

Guido Deissmann1, Thorsten Schäfer2 1Forschungszentrum Jülich GmbH, Germany; 2Institut für Geowissenschaften, Univeristät Jena, Germany

The deep geological disposal of high-level nuclear waste poses major scientific and societal challenges to substantiate the long-term safety of the repository system over time scales of up to one million years. Material sciences and geosciences provide important contributions to the scientific bases of the safety case for deep geological repositories. This session intends to bring together contributions from all fields in geoscience providing insight into important processes relevant to the geological disposal of nuclear wastes. The scope of this session includes topics ranging from repository concepts and site characterization, waste form performance and ground water interactions, engineered barrier systems and host rock interfaces, radionuclide migration in the repository near- field and the geosphere including underground research laboratory studies, and reactive transport modelling (experiments & simulations) to performance and risk assessment within the context of nuclear waste management.

Topic 10: Fossil ecosystems

ID: 106 — The early `Explosion of Life´ - from the Cambrian innovations to the great Ordovician radiations

Oliver Lehnert1, Thomas Servais21FAU Erlangen-Nürnberg, Germany; 2USTL, CNRS, UMR 8198 - Evo-Eco-Paleo, France

The session is a regional contribution to the current IGCP project 653 `The onset of the Great Ordovician Biodiversification Event´. The `GOBE´ started at distinct times on different palaeocontinents and displays diachronic pulses of radiations in different faunal groups. Its roots date back into the Cambrian with pulses in the late Cambrian and Early Ordovician, and major bursts in biodiversity during Middle and Late Ordovician times. Interdisciplinary studies and contributions from different geoscientific fields related to the evolution of different groups and changes in ecosystems as well as to the triggers for the GOBE are very welcome.

 

ID: 119 — Biodiversity dynamics in deep time - signatures of radiation and extinction in the geological record

Richard Hofmann Museum für Naturkunde Berlin, Germany

Analysing ancient biodiversity patterns is key to the understanding of principal drivers of diversification and extinction in the geological past. Episodes of diversification offer fundamental insight into macro-evolutionary processes that are not readily accessible by the study of extant ecosystems alone. Likewise, ancient mass extinctions serve as the only available analogues of the modern biodiversity crisis and thereby help to make well-founded predictions of the effects of the current global change on biodiversity and ecosystem functioning. This session is intended to bring together a multidisciplinary set of researchers to better understand these lessons from the geological past. We invite contributions at all scales: from outcrop studies to global data compilations, from analyses of single clades to whole communities. Presentations that integrate geochemical data of any sort with biodiversity patterns are also highly encouraged.

 

ID: 122 — New Insights into the Quaternary Vegetation and Climate History

Nadine Pickarski, Andrea Miebach, Thomas Litt Steinmann Institute, University of Bonn, Germany

Quaternary archives provide valuable insights into long-term and rapid changes of the ecosystem. An improved knowledge of climate and vegetation dynamics in the past allows to understand environmental interactions and helps to assess the impact of recent and future climate changes.

We invite contributions dealing with various aspects of Quaternary environments. We particularly welcome investigations based on long, continuous, and high-resolution records from terrestrial, lacustrine, and marine sequences. We appreciate innovative studies to describe, reconstruct, and model paleoenvironments.

 

ID: 139 — Vertebrate Bone Histology

Nicole Klein, Dorota Konietzko-Meier Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Germany

In paleontology, bone histology is one of the major sources to obtain direct information about paleobiology such as life history traits or physiology. Various approaches are developed in paleohistological studies, including skeletochronology, growth dynamics, microanatomy, quantification of the structural, functional and phylogenetic signals in bone organization, bone biomechanics and bone paleoecological signals. This session invites contributions dealing in general with vertebrate bone histological topics.

Topics 11: Fossilization and the quality of the fossil record

ID: 118 — The fossil record of evolution and evolutionary processes

Ralph Thomas Becker Westfälische Wilhelms-Universität Münster, Germany

It is a wide-spread misconception, for example among many evolutionary biologists, that the fossil record is too incomplete and episodic to record details of phylogeny and evolutionary processes. However, since the famous study of the Steinheim gastropods by Hilgendorf (1866, 1867) it is clear that there are many rich occurrences of fossil in time and space that preserve clearly the paths of morphological change, speciation, or the multifold aspects of macroevolution. Ca. 150 years after the first published phylogenetic tree based entirely on fossils, the session shall provide a platform to present new or revised case-studies, which exemplify evolutionary patterns, from the timing of speciation and reconstructed adaptive radiations to iterative evolution and rates of evolutionary change, in deep time.

 

ID: 138 — Taphonomy: Inferences about ecosystems and paleobiology

Jelle Heijne, Kayleigh Wiersma Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Rheinische Friedrich-Wilhelms-Universität Bonn

Although the taphonomy of fossils is a widely studied and well understood branch of palaeontology, the information provided by the study of taphonomy for understanding both terrestrial and marine ecosystems is often overlooked. Recent studies showed the wide array of conclusions that could be drawn from assessing the disarticulation and completeness of specimens. Environmental factors that can be inferred from taphonomical analysis include, but are not limited to, water depth, stressed environments (e.g., hypersalinity/anoxia), carcass transport, scavenging, and current activity. Furthermore, decay patterns might provide insights in the anatomy and thus the paleobiology of studied organisms. Examples include the recurrent preferential preservation of certain body regions shown in one specific taxon. Invited to this session are vertebrate and invertebrate palaeontologists as well as paleobotanists with talks on taphonomy. Contributions regarding the sedimentology of fossil bearing layers will also be taken into consideration.

 

ID: 140 — Soft part preservation: The limits of the fossil record

Paul Martin Sander, Jes Rust Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Rheinische Friedrich-Wilhelms-Universität Bonn

Traditionally, animal fossils have been equated with mineralized remains such as shells and bones. However, it has been increasingly recognized that the preservation of non-mineralized tissue and the organic component of mineralized tissues is commonplace. Such soft part preservation may come in the guise of altered organic remains, templating and replacement by minerals, and pure impressions in fine-grained sediments. Soft part preservation has classically been associated with conservation deposits but the organic components in mineralized tissues result from different, as yet poorly understood, conditions of preservation. The purpose of the session is to review the state of the art and bring together researchers interested in a synthetic view of soft part preservations and its implications for our understanding of the limits of the fossil record. Contributions are invited by the members of the DFG FOR 2685 and any other interested researcher.

Topics 12: Applied and industrial micropalaeontology

ID: 132 — Applications of Quaternary Microfossils

Anna Pint1, Peter Frenzel2 1University of Cologne, Germany; 2University of Jena, Germany

Microfossils are important tools in Quaternary Geology, Physical Geography, Palaeooceanography, Palaeoclimatology and Geoarchaeology. Their assemblage composition, environmental induced morphological reactions and shell chemistry signatures enable reconstructing a wide range of environmental factors in aquatic or terrestrial ecosystems. The session presents recent progress of Quaternary Micropalaeontology and its use in other fields of research.

 

ID: 133 — Reconstructing lost worlds – pre-Quaternary microfossils as proxies in time and space

Peter Frenzel1, Anna Pint2 1University of Jena, Germany; 2University of Cologne, Germany

The small size of microfossils and their high diversity enable studying large associations, often with well preserved and complete individuals even from small samples as typical from sediment cores. Ecological preferences and tolerances of taxa are used for reconstruction of palaeoenvironments, their biostratigraphical ranges for bringing strata into a chronological order. The great value of microfossils for geoscience is their application but as past organisms, they are excellent palaeontological study objects on their own as well. The session presents geological applications of microfossils as well as palaeobiological studies.

Topics 14: 3D applications in the geosciences

ID: 115 — 3D applications in the geosciences

Mathias Knaak1, Gösta Hoffmann2, Mario Valdivia-Manchego2 1Geologischer Dienst NRW, Krefeld, Germany; 2Uni Bonn, Germany

This session aims to bring together researchers who are engaged with 3D spatial data. This could be surface related modelling as 3D-point clouds generated by both airborn or terrestrial laserscanner, photogrammetric range imaging techniques (structure from motion), optical multi- and hyperspectral as well as thermal sensor imaging techniques, differential GNSS or others. In the same way classical subsurface modelling, integrating tectonic and sedimentological 3D-approaches, as well as long term dynamic processes models and scaling analysis will be of central interest. Contributions covering methodical aspects such as data acquisition, analysis, visualisation, and integration in 3D geological models are welcome. We would like to discuss current workflows, practices and other practical issues. Furthermore, case studies on Earth surface processes and landforms using 3D data are invited.

We particularly encourage early stage researchers to present their studies.

 

ID: 123 — Virtual Palaeontology

René Hoffmann1, Rico Schellhorn2 1Ruhr-Universität Bochum, Germany; 2Rheinische Friedrich-Wilhelms-Universität Bonn, Germany

The term "Virtual palaeontology" refers to the interactive 3D digital visualization of fossils. In the last two decades non-invasive imaging techniques were widely applied in the field of palaeontology. Such techniques are different varieties of computed tomography, magnet resonance tomography, surface scanning, or photogrammetry for instance. Beside these non-destructive approaches, serial grindings also lead to 3D reconstructions of fossils. In general, the field of virtual palaeontology allows new insights into fossils and also the outside of the structure. Application of geometric morphometrics, finite element analyses, or other methods to the 3D models enhance our understanding of the history of life, functional morphology, and palaeobiology. This session is open for palaeontologists of all fields using 3D models and methods to investigate their fossils.

Topic 17: Open Session

ID: 107 — Tectonic Systems

Nikolaus Froitzheim1, Michael Stipp2, Kamil Ustaszewski31Universität Bonn, Germany; 2Universität Innsbruck, Austria; 3Universität Jena, Germany

We invite contributions from the fields of tectonics, structural geology, and crystalline geology. Regional and process-oriented studies from all kinds of active or fossil tectonic settings are welcome – rifting, subduction, collision, transform, and intra-plate deformation. Studies dealing with the development of methods related to the deformation of crust and lithosphere from micro-scale to plate scale are also invited.

 

ID: 121 — Ice ocean interactions and climate change

Michael E Weber1, Frank Lamy2, Janne Repschläger3 1Steinmann Institut, Universität Bonn; 2Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven; 3Max-Planck Institut für Chemie, Mainz

Due to rising temperatures and CO2 levels ice sheets covering Greenland and Antarctica have the potential to provide a significant contribution to global sea-level rise over the coming decades to centuries. It is therefore imperative to improve our understanding of the processes governing the dynamics of ice sheets and sea ice in polar regions. In recent years it has emerged that the interaction with surrounding oceans might be key to changes in both the Arctic and Antarctic ice dynamics. Therefore, studies on past changes in ocean temperature, circulation, and sea-ice coverage are critical. Also, better knowledge on ice-sheet behavior from near- and far-field data and modeling is needed to improve projections of future behavior. This highly interdisciplinary session invites contributions from both polar regions and various fields including paleoceanography, marine geology, glaciology, ocean and ice sheet modeling, as well as climate and atmospheric sciences, to unravel bipolar linkages and describe interactions between different parts of the climate system for critical periods of earth’s history.

 

ID: 127 — Rock rheology and deformation transients: How do we go about it?

Georg H. Dresen, Livia Nardini, Bernhard Schuck, Erik Rybacki GFZ Potsdam, Germany

Convener: Livia Nardini, Bernhard Schuck, Erik Rybacki, Georg Dresen

Rock rheology and deformation transients: How do we go about it?

Rock deformation at depth in the Earth’s crust and Upper Mantle is typically governed by thermally activated viscous creep. Extensive laboratory studies and quantitative field observations allowed formulating robust constitutive equations for major crustal and upper mantle rocks. However, key questions such as whether the ductile roots of faults are concentrated in weak narrow shear zones or broad regions of bulk ductile flow, how the rheology of shear zones affects the temporal evolution of stress and surface strain during the earthquake cycle and the nature of coupling between elastic and ductile lithosphere have not yet been fully addressed. This also holds for the seismic and geodetic signatures of slip transients along plate-bounding faults that have been reported over the last decade suggesting that deformation at depth may be governed by a complex interplay of non-steady state processes. For this session, we invite contributions that address field observations, numerical modelling and laboratory studies of rock deformation and in particular focusing on deformation transients.

 

ID: 130 — Sea-level fluctuations over time – Sea-level index points and dating approaches

Martin Seeliger, Anna Pint University of Cologne, Germany

Sea-level variations spread over a very broad spectrum. The largest global-scale sea level changes (50–200 m in amplitude) occurred on geological timescales. And even throughout the relatively short period of mankind immense sea-level fluctuations took place infecting human settlements.

Defining sea-level index points and their dating is challenging. This session calls for contributions dealing with sedimentological, geological, biological and anthropogenic sea-level proxies to reconstruct sea level over time and from global to the regional scale. We also explicit invite papers presenting recent dating approaches on this topic.