Autogenic translation and counter point bar deposition in meandering rivers
This paper explores the development of counter point bars in meandering rivers through autogenic translation processes.
Sedimentology
Point bars and counter point bars: Why is sediment deposited on the 'wrong' side of a meander bend?
The simplest definition of point bars is that they are sedimentary deposits forming on the inner, convex bank of river bends. [‘Inner’ and ‘convex’ bank means that, looking toward the river, the bank is curving around you.] Amadeus W. Grabau, an early ‘influencer’ in stratigraphy and sedimentary geology, published a beautiful drawing of how meanders grow, point bars evolve, and oxbow lakes form, more than a hundred years ago: Diagram illustrating the development of meanders in a river. From Grabau (1920). ...
Evaluating the relationship between meander‐bend curvature, sediment supply, and migration rates
River meander migration plays a key role in the unsteady ‘conveyor belt’ of sediment redistribution from source to sink areas. The ubiquity of river meandering is evident from remotely sensed imagery,…
The stratigraphic evolution of a submarine channel: Linking seafloor dynamics to depositional products
We investigate the relationship between the cross-sectional geomorphic expression of a submarine channel as observed on the seafloor and the stratigraphic product of long-lived erosion, bypass, and se…
How do basin margins record long-term tectonic and climatic changes?
A long-standing goal of sedimentary geoscience is to understand how tectonic and climatic changes are reflected in basin fill. Here, we use 14 numerical models of continental-scale sedimentrouting sys…
Grain-Size and Discharge Controls on Submarine-Fan Depositional Patterns From Forward Stratigraphic Models
Submarine fans are important components of continental margins; they contain a stratigraphic record of environmental changes and host large accumulations of oil and gas. The grain size and volume of s…