T07 Physical sedimentary processes (including volcaniclastics)
T07-SS01 - Unravelling depositional processes of muddy successions from integrated and multiscale investigations
Conveners: Schieber J.(Indiana University, USA), Pellegrini C. (Institute of Marine Science, Italy), Taylor K. (University of Manchester, UK), Trabucho Alexandre J.P. (Utrecht University, Netherlands)
Fine-grained strata store critical information about depositional processes and record the bulk of geologic time in sedimentary successions. In current studies of muddy successions, narrowly focused investigations with specialized data sets dominate, whereas few studies embrace a multifaceted approach at multiple scales of observation (micron- to km-scale) to unravel depositional parameters. This session aims to bring together researchers interested in the genesis, dynamics, and fate of fine-grained materials delivered to sedimentary basins, with a view towards key parameters that govern their growth and outbuilding into sedimentary basins. We therefore invite presentations from stratigraphers and sedimentary geologists, experimentalists and numerical modelers that contribute to the advancement of our understanding of fine-grained sediment dynamics and processes. Comprehensive and interdisciplinary approaches that introduce novel concepts that enhance the holistic comprehension of fine-grained sedimentary successions are particularly welcome. Bridging existing “gaps” between research disciplines that study present-day as well as ancient systems from different conceptual and motivational perspectives is a further session objective.
T07-SS02 - When volcanoes meet the environment
Conveners: Di Capua A. (CNR – IGAG, Italy), Kereszturi G. (Massey University, New Zealand), Le Pera E. (University of Calabria, Italy)
Primary and secondary volcanoclastic processes represent the crossroad between volcanological and sedimentological processes, and their influence on the environment is largely recognized. Nevertheless, a gap still exists between sedimentological and volcanological approaches to the same problems. This session aims to bring together researchers working on volcanic or volcanically influenced terrains to unravel the generation, transport and settling of volcanic particles through the geological time in different environments, in order to narrow this gap. We invite presentations that include, but are not limited to, 1) field-based description and interpretation of volcanoclastic sediments and related processes both in modern and ancient realms, 2) provenance studies that highlight the influence of volcanic activity on sedimentary basins, 3) studies on the characterization of physico-chemical processes that lead to the generation and weathering of volcaniclastic particles through time. This session is co-sponsored by the Commission on Volcanogenic Sediment of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI).
T07-SS03 - An expansive perspective of meandering: Patterns and processes across landscapes and scales
Conveners: Finotello A. (University of Padova, Italy), Durkin P.R. (University of Manitoba, Canada), Sylvester Z. (The University of Texas, USA)
Meandering patterns shaped by fluid flows are among the most common and strikingly beautiful geomorphological features in nature. Meanders are found over a broad range of physical landscapes, from bedrock channels to rivers and estuaries, deep-marine environments, supraglacial streams, and other planets such as Mars and Venus. This session aims at reconciling results from field, laboratory, and numerical investigations of meandering channels found in distinct environmental and geological contexts. We seek to bring together those working on fluvial, coastal, deep-marine and planetary meander geomorphology. Our interest is in how the interactions of different autogenic and allogenic processes, both in the horizontal and the vertical dimension, affect meander kinematics and the resulting morphology, sedimentology, and stratigraphic architecture. Insights gained from developing a comprehensive understanding of meander morphodynamics will enhance the current knowledge of stream meandering in the full variety of settings in which it manifests, with global implications for stream and wetland restoration, land management, infrastructure design, oil exploration and production, carbon sequestration, hazard mitigation, and planetary paleoenvironmental reconstruction.