Fluvial strata dominated internally by sedimentary structures of interpreted upper flow regime origin are moderately common in the rock record, yet their abundance is not appreciated and many examples may go unnoticed. A spectrum of sedimentary structures is recognised, all of which occur over a wide range of scale: 1. cross-bedding with humpback, sigmoidal and ultimately low-angle cross-sectio...

Despite a well-documented record of preserved aeolian successions from sedimentary basins characterized by widely variable subsidence rates, the relationship between architecture and subsidence-driven accommodation generation remains poorly constrained largely unquantified. Basin as control on is examined through analysis 55 ancient case-studies categorized into settings ‘slow’ (>1–?10 m Myr...

The dynamics of river bedforms is still not well understood and detailed experimental investigation may provide significant insight into the process mechanisms. In this study, results are presented for a laboratory experiment that returned long time series sediment kinematics bed-load dunes. run was performed in closed conduit but, light prior literature, also representative dunes under open-ch...

Widely available ‘fish-finder’ echo-sounding devices are beginning to be used in bathymetric studies estimate geomorphic change. To date, however, there have been no applications shallow and complex wetlands, where changes sediment storage notoriously dynamic time difficult describe accurately space. Therefore, this study, we tested the performance of an ‘off-the-shelf’ fish-finder for mapping ...

Despite their importance in understanding glaciological processes and constraining large-scale flow patterns in palaeo-glaciology, there is little consensus as to how drumlins are formed. Attempts to solve the ‘drumlin problem’ often fail to address how they are created from an initially flat surface in the absence of obvious cores or obstacles. This is a key strength of the instability theory,...

Present-day understanding of rill dynamics is hampered by a lack of detailed data on velocity distributions in rills. The latter are difficult to collect with traditional techniques due to the very low water depths and the relatively high flow velocities in rills. The objectives of this paper were to investigate the feasibility of miniaturized acoustic Doppler velocimeter (mADV) measurements in...

1. Contemporary species distributions are determined by a mixture of ecological and historical filters acting on several spatial and temporal scales. Mediterranean climate areas are one of the world’s biodiversity hotspots with a high level of endemicity, which is linked to complex ecological and historical factors. 2. This paper explores the ecological and historical factors constraining the d...

When compared to their temperate coastal counterparts, sediments deposited and preserved along arid aeolian shallow-marine margins remain relatively poorly understood, particularly at the scale of lithofacies units architectural elements. These systems often record evidence for relative sea-level change within sedimentary basins. This work focusses on Entrada-Curtis-Summerville formations that ...

In soft-bottom marine ecosystems, bedform variation is induced by wind- and tidal-driven hydrodynamics. The resulting megaripples, sand waves sandbanks form a spatially temporally heterogeneous seafloor landscape. strong physical forces imposed the migration of these bedforms are important determinants for occurrence different macrozoobenthic species. Quantifying effect can help in differentiat...

Waves and tidal currents resuspend transport shelf sediments, influencing sediment distributions bedform morphology with implications for various disciplines including benthic habitats, marine operations, spatial planning. Shelf-scale assessments of wave-tide-dominance sand tend not to fully include wave-tide interactions, which nonlinearly enhance bed shear stress apparent roughness, change th...