Sedimentology

Sedimentology examines how particles produced by weathering and erosion are transported by water, wind, ice and gravity, then deposited and transformed into sedimentary rocks. It integrates field description, laboratory analyses of grain size, mineralogy, fabric and geochemistry, and geophysical imaging to reconstruct depositional environments from coasts and rivers to deserts, deltas and deep basins. Central concerns include facies architecture, stratigraphic sequences and the interplay between sediment supply, transport energy and accommodation space. Insights gained inform palaeoenvironmental reconstructions, resource exploration, geohazard assessment and the management of soils, aquifers and coastal systems under changing climates.

Research from Nature Portfolio

Strong‐wind events have been shown to dominate the migration of barchan dunes. High‐frequency field measurements reveal that a small fraction of time spent in intense gusts accounts for most of the sand flux and resultant dune advance, overturning earlier notions that average wind speeds govern dune evolution. This finding holds across multiple dune fields worldwide, emphasising the disproportionate geomorphic impact of extreme gusts. In marine settings, inversion of AUV‐derived sub‐bottom profiling data using advanced poroelastic models has yielded maps of surface‐sediment porosity, density and mean grain size with deviations below 15% compared to cores. By fitting reflection‐coefficient measurements at kilohertz frequencies, researchers have delineated systematic downslope fining trends and resolved metre‐scale heterogeneity in sediment properties along continental margins, improving our capacity to non‐invasively characterise seabed stratigraphy.

Research from all publishers

A new luminescence and radiocarbon chronology from a drift‐sand site in the Netherlands identifies five distinct Late Mesolithic to medieval sand‐drift phases separated by podzolised palaeosols. Early sand mobilisation (~6000 BCE) coincides with prehistoric burning and forest clearance, demonstrating direct links between land use and aeolian activity. Subsequent phases align with Neolithic and medieval deforestation, highlighting human influence on dune dynamics. In Hungary, low‐ and high‐temperature combustion radiocarbon ages of soil‐organic‐carbon fractions have been compared to quartz optically stimulated luminescence in blown‐sand deposits. The younger low‐temperature carbon fraction closely matches OSL ages, validating its use as a reliable proxy for soil burial timing in aeolian terrains and revealing limitations of bulk organic‐carbon dating for reconstructing quick succession events in dune environments.

Sedimentology publication trend

The graph below shows the total number of articles in sedimentology across all publications each year (not limited to Nature Index journals).

Technical terms

Aeolian processes: The erosion, transport and deposition of sediment by wind action.

Sub‐bottom profiler: An acoustic instrument for imaging sediment layers beneath the seafloor using low‐frequency pulses.

Poroelasticity: A theoretical framework coupling fluid flow and elastic grain‐skeleton deformation to describe acoustic dispersion and attenuation in porous media.

Optically stimulated luminescence (OSL): A dating method that measures the trapped‐electron signal in mineral grains to determine time since last light exposure.

Palaeosol: A buried soil horizon preserved within a sedimentary sequence, marking past landscape stability and pedogenesis.

Sand flux: The volumetric rate of sand movement per unit width, driven by wind or currents.

Grain‐size distribution: The relative abundance of sediment particles across defined size classes, reflecting transport and depositional energies.

References

1. Strong-wind events control barchan dune migration. Communications Earth & Environment (2024).
2. Inversion of the physical properties of seafloor surface sediments based on AUV sub-bottom profile data in the northern slope of the South China Sea. Scientific Reports (2021).
3. A multi-staged drift sand geo-archive from the Netherlands: New evidence for the impact of prehistoric land use on the geomorphic stability, soils, and vegetation of aeolian sand landscapes. Catena (2023).
4. SOIL ORGANIC CARBON DATING OF PALEOSOILS OF ALLUVIAL FANS IN A BLOWN SAND AREA (NYÍRSÉG, HUNGARY). Radiocarbon (2022).
5. The Stratigraphic-Sedimentologic Data Base.