DIFFERENTIATION BETWEEN ADVANCING AND RETREATING BEACH SANDS ALONG THE NOUARCHOTT COAST, MAURITANIA.

DIFFERENTIATION BETWEEN ADVANCING AND RETREATING BEACH SANDS
ALONG THE NOUARCHOTT COAST, MAURITANIA. ‘t ‘t;J,(> .,,”/
M.F. LOTFY, ‘\
Coastal ResearchI~stitute, 15 Faraana Str., EI-Shallalat,

Alexandria, £gypt.

ABSTRACT
This study distinguishes between accreted and eroded
beach sands along the Nouakchott coast of Mauritania on the
basis of their grain size, shape of grain size distribution
curves and statistical grain size parameter relationships.
Such methods were found to be effective in differentiating
between them. The accreted sands are coarser, less sorted,
lightly negative skewed and have relatively higher kurtosis
values than the eroded ones.