T01 - Continental environments and depositional systems

 

T01-SS01 Palaeosols: A treasure chest to understand the palaeoenvironmental and sedimentary processes in continental realm

Conveners: Basilici G. (Universidade Estadual de Campinas, Brazil), Cojan I. (Centre de Géosciences, Mines Paris Tech, France), Jewuła K. (Institute of Geological Sciences, Polish Academy of Sciences, Poland), Sol Raigemborn M. (Centro de Investigaciones Geológicas, Universidad Nacional de La Plata, Argentina), Varela A. (CONICET – Universidad Nacional de La Plata, Argentina)

Palaeosols occur consistently in continental sedimentary successions, from the Archean to the Present. Their occurrence can be extremely variable: from almost completely missing where high sedimentation rate or extreme palaeoenvironmental conditions acted, to comprise more than 80% of the thickness in many other sedimentary successions. Nevertheless, the attention paid to palaeosols in ancient continental sedimentary successions is not always proportional to their abundance. Although since the 80s the scientific consideration of palaeosols has increased, palaeosols still appear to be an underestimated source of palaeoenvironmental data, especially in studies linking sedimentary processes and pedogenesis. Even where the deposits themselves were deposited by rapid and paroxysmal processes, palaeosols follow different rules. A well-developed palaeosol forms in more than 103 yr; during this period this is an open system that can record all the environmental conditions and changes in the atmosphere and just beneath the sediment surface. We invite sedimentologists to present research on any aspects of palaeosols and their relationships with sediments.


T01-SS02 Lacustrine Sedimentology: From deep time and climate evolution to modern processes and human impact

Conveners: Roeser P. (Leibniz Institute for Baltic Sea Research, Germany), Marchegiano M. (Imperial College London, UK), Gliozzi E. (Roma Tre University, Italy), Cosentino D. (Roma Tre University, Italy), Ariztegui D. (University of Geneva, Switzerland), Liu K. (China University of Petroleum, China), Liu H. (PetroChina, China)

Lake sediments offer valuable high-resolution archives providing unique reconstructions of climate- and human-induced environmental changes at various time scales. The accurate interpretation of lacustrine records requires an in-depth understanding of both modern and past sedimentation processes. Combining these data with those of multi-proxy investigations can allow not only disentangling climate from anthropic triggers but also provide unique information to better understand source-sink processes in deep time, such as fine-grained lacustrine sedimentary systems and their impact in the exploration of geo-resources. This session welcomes studies from the broad fields of modern and paleo-limnology including deep time. We encourage presentations dealing with a variety of approaches, from basin-wide aspects on sediment deposition including geophysical data to more detailed lithological and micro-facies analysis. Paleoclimate and paleoenvironmental reconstructions based on well-dated sedimentary archives applying methods such as inorganic and organic geochemistry, sedimentary DNA, biological remains as well as numerical models or statistical approaches are also welcomed.
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