Crevasse splay morphodynamics near a non-vegetated, ephemeral river terminus: Insights from process-based modelling

Crevasse splays generate subtle local relief and contribute to fluvial basin sedimentary filling but controls on splay development along dryland rivers remain poorly understood owing to limited field, laboratory, and numerical modelling studies. Based on previously-acquired field data and new remote sensing observations of splay morphology...

The key role of crevasse splays in prograding river systems: Analysis of evolving floodplain accommodation and its implications for architecture and reservoir potential

A generic life cycle applies to crevasse splays in non-degradational fluvial systems, typically ending in healing and abandonment. Crevasse-splay channels adjust to a graded equilibrium profile through proximal erosion and distal deposition, with their distal termini acting as a (prograding) local base level. When proximal incision advances to...

On the origin of crevasse-splay amalgamation in the Huesca fluvial fan (Ebro Basin, Spain): Implications for connectivity in low net-to-gross fluvial deposits

Floodplain deposits are abundant in low-gradient dryland river systems, but their contribution to connected reservoir volumes has not yet been fully acknowledged due to their poor detectability with typical wireline log suites and relatively-lower reservoir quality. This study presents an analysis of stacked crevasse splays in the distal part of...

Spatial Distribution and Connectivity of thin-bedded crevasse splay sandstones; outcrop-analogue studies for tough gas reservoir potential

A majority of the volume of alluvial sequences consists of fine-grained floodplain deposits (Kraus, 1987; Kraus & Gwinn, 1997). Traditionally, these deposits are seen as non-reservoir rock since their permeability is very low. This research shows that crevasse splay deposits that occur in these floodplain fines can comprise stacked complexes of...

Geological characterisation of thin-bedded crevasse splay sandstones; outcrop-analogue studies for tough gas reservoir potential

Crevasse splay complexes in floodplain sequences are potential low net-to-gross tough gas reservoirs. The porosity and permeability of these reservoirs is low, but lateral amalgamation by compensational stacking can create extensive lobe-shaped sediment bodies with reservoir potential. The aim of this thesis is to characterize the development of...