Environmental Engineering Reference
In-Depth Information
FIGURE 6.27
Color composite FRTS I image mosaic of Florida showing central lake district, a region of extensive sinkhole
development. In the lower regions, the lakes are often filled with 80m of soils; in the higher regions sinks are
still developing, especially in areas subjected to groundwater withdrawal. (Mosaic prepared by General
Electric Company, Beltsville, Maryland, in cooperation with NSGS, NASA, and the Southern Florida Flood
Control District.)
6.3.3
Landforms
Origin
Erosional agents attack the beds differentially in sedimentary rocks in the general
sequence from resistant sandstone to less resistant shale and limestone. The resulting land-
forms relate to the warped bedding configuration and can be parallel ridges, plunging
folds, domes, and basins at macroscales.
