Environmental Engineering Reference
In-Depth Information
FIGURE.6.22
Cleaning soil from solution cavity in limestone prior to pouring lean concrete (Versailles, Kentucky). (Photo by
R.S. Woolworth.)
ridges, which generally trend southwest-northeast. The ridges are steep-sided with
sharp crests, and together with the lineations, follow the foliations of a great thickness of
biotite gneiss and occasionally schists, into which granite has intruded, as well as basalt
dikes. The texture pattern created by foliation and jointing is intense at the scale shown.
A number of the longer lineations represent major faults, evident on the left-hand portion
of the image.
Cool, Moist Climate: Glaciated Area
Landsat image of the Bridgeport-Hartford, Connecticut, area showing the landform
developing in a cool, moist climate in metamorphic and igneous rocks denuded by
glaciation is given in
Figure 6.29.
The texture is extremely variegated and the landform is
much more subdued than that illustrated in
Figure 6.28,
which is at the same scale. The
strong lineament in the lower left-hand corner is the Ramapo fault (see
Section 6.5.3)
.
The
area identified as Long Island is composed of Cretaceous, Pleistocene, and recent soil for-
mations.
Schist
Landforms in schist are characterized by rounded crests which follow the schistosity, shal-
low side slopes in humid climates, and more rugged slopes in dry climates. Drainage is
medium to fine rectangular dendritic.
