Fine-grained sediments (consisting of clay, silt, and sand) abound in many types of depositional settings, including fluvial deltaic, coastal, shallow and deep marine, and subglacial environments, as well as lahars and debris flows. Fine-grained sediments can dampen turbulence, alter fluid rheology, and generate hindered or lubricated particle interactions. They also confer cohesiveness and inhibit erosion and hyporheic flow. The resulting complex sediment-fluid interactions affect large-scale morphologic expressions and depositional patterns that are reflected in the stratigraphic record. Furthermore, fine-grained sediments often contain abundant organic matter and adsorb contaminants and pathogens and consequently play a critical role in water quality and the global carbon cycle. This session seeks contributions from studies exploring the movement of fine-grained sediment, the resulting depositional patterns, as well as its impacts on Earth and other planetary surfaces and on the global carbon cycle. We welcome field- and laboratory-based studies, numerical modeling, and theoretical contributions.

• B - Biogeosciences
• C - Cryosphere
• H - Hydrology
• NH - Natural Hazards