Environmental Engineering Reference
In-Depth Information
PLATE 5.9 (
Color Plate 5.9
follows
page 396.)
Vesicular BASALT (Salida, Colorado).
PLATE 5.10 (
Color Plate 5.10
follows
page 396.)
RHYOLITE (Castle Rock, Colorado).
Materials Resulting
The residue can include rock fragments of various sizes, consisting essentially of unaltered
rock; particles of various sizes, consisting of materials resistant to chemical decomposition,
such as quartz; and clays or colloidal particles, which are insoluble products of chemical
decomposition of less-resistant rocks such as feldspar and mica.
Soluble products of decomposition go into solution.
Transport and Deposition
Clastic Sediments (Detritus)
The particle products of weathering are transported primarily by flowing water to be
deposited eventually in large water bodies or basins. The products are generally segregated
by size as defined in
Table 5.8
into boulders, cobbles, pebbles, granules, sand, silt, and clay.
Wind currents provide transport for finer sand grains and silt sizes.
