In the deserts of
northern portion of
Africa, almost any land area that is not covered
by sand is dominated
by ancient stream channels. Running water is probably the most powerful
element of erosion on our planet.
Most of these streams and rivers are completely dry now implying that in the
past, the climate in this area
was much more humid.
most common drainage patterns for these ancient rivers are dendritic drainage
and meandering patterns. Missing from the meandering patterns are oxbow
lakes and meander scars. Uplift of the area created entrenched meanders
and eroded the oxbow lakes and meander scars.
drainage patterns, simply as patterns, are quite beautiful.