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The Atlantic Seaboard Fall Line, or Fall Zone, is a 900-mile (1,400 km) escarpment where the Piedmont and Atlantic coastal plain meet in the eastern United States. [2] Much of the Atlantic Seaboard fall line passes through areas where no evidence of faulting is present.
A fall line (or fall zone) is the area where an upland region and a coastal plain meet and is noticeable especially where rivers cross it, with resulting rapids or waterfalls. The uplands are relatively hard crystalline basement rock , and the coastal plain is softer sedimentary rock . [ 1 ]
Contour map with an example fall line. Contour lines of constant elevation are blue. One example fall line is red. A fall line refers to the line down a mountain or hill which is most directly downhill; that is, the direction a ball or other body would accelerate if it were free to move on the slope under gravity.
The fall line, where the land rises abruptly from the coastal plain, marks the limit of navigability on many major rivers, so inland ports sprang up along it. Within the Piedmont region itself, there are several areas of urban concentration, the largest being the Atlanta metropolitan area in Georgia.
The Fall Line extends through Fayetteville, then Raleigh, and finally through Henderson, North Carolina near the Virginia border. The topography at the fall line drops 150–350 ft (46–107 m) in an eastward direction; while noticeable, the drop is quite gradual and occurs over a width of 1–3 miles (1.6–4.8 km).
The Eastern Continental Divide (orange line) demarcates two watersheds of the Atlantic Ocean: the Gulf of Mexico watershed and the Atlantic Seaboard watershed. The Eastern Continental Divide , Eastern Divide or Appalachian Divide is a hydrological divide in eastern North America that separates the easterly Atlantic Seaboard watershed from the ...
In our region, fall color is expected to peak in mid-October. Warm, sunny days are good for vibrant fall colors, but only if they are accompanied by cool nights, according to the Weather Channel.
A mountain biker riding a trail which follows the line of greatest slope, or fall line.. In mountain biking the line of greatest slope defines the fall line, which is the path a trail will follow to descend a hill or mountain with the shortest path, [1] and will also cause the rider to gain the most velocity (assuming brakes are not used, and other factors such as rolling resistance are equal).