2.2 Fluvial Sediments
2.2.9 Summary (Fluvial Sediments etc.)
~ Fluvial deposits displaya variety of large-scale
architectural elements, including channel fills
and overbank fines.
~ The channel fills consist of bedload (gravel and
sand bars), lateral accretion complexes, and suspended load (mud).
Three-dimensional channel geometries and
grain-size distributions show a distinct trend
from proximal (alluvial fans) to distal regions
(meandering and anastomosing rivers).
~ Low or strong subsidence (base-level change) is
reflected by lateral or vertical stacking of channels (cf. Sect. 7.7).
- Minor bed forms and sedimentary structures,
commonly observed in small outcrops, reveal
the temporally and spatially changing flow regimes characterizing fluvial environments.
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