The Great Red River Raft and its Sedimentological Implications - Reconstructing Human-Landscape Interactions: Interpreting Desert and Fluvial Environments - page 42

92°00 91°45 91°30

92°15 W

31°15 N

Avulsion
node

31°

30°45

Mississippi River
meander belt 2

Mississippi River
meander belt 3 0

10 mi

30°30

0 15 km

Active Holocene
meander belt

Abandoned Holocene
meander belt

Holocene
backswamp

Pleistocene
terrace

Pleistocene
upland

Active
course

Abandoned
course

Fig. 6 The Mississippi River avulsed south of Vicksburg, Mississippi forming meander belt 2
(Modified from Aslan et al. 2005 )

Geomorphic Process

The major geomorphic processes that have been active in the development and
subsequent modifications of the Red River floodplain are lateral migration, deg-
radation or vertical down cutting, overbank deposition on to the river's flood plain,