SAND DUNES
Sand dunes form some of the most spectacular and
dynamic landforms on the planet. A sand dune is a
mount, hill or ridge of sand that lies behind the part
of the beach affected by tides. A sand dune is not a
permanent structure.
How is it formed?
Wind carries fine grains of sand and bounces
heavier sand grains along. And while the wind isn't
strong enough to move really heavy grains of sand,
bouncing sand is enough to push the heaviest
grains forward. Finally, an obstacle, such as a plant
or rock, is needed to block the wind and cause the
sand to pile up. Once sand piles up dunes can form.
Interesting Facts
 A sand dune is a mount, hill or ridge of sand
that lies behind the part of the beach affected
by tides.
 They are formed over many years when
windblown sand is trapped by beach grass or
other stationary objects.
 Sand dunes support an array of organisms by
providing nesting habitat for coastal bird
species including migratory birds.
Examples
 Buttercup sand dune
 Olancho dunes
 Kermit sand dunes
 Syracuse sand dune park
 St. Anthony sand dunes
Not actual images
Recourses
 sihttp://des.nh.gov/organization/commisoner/pip/factsheets/cp/docu
ments/cp-02.pdf
 members.virtualtourist.com
 off-roadweb.com
 humanandnatural.com
 http://des.nh.gov/organization/commissioner/pip/factsheets/cp/docu
ments/cp-02.pdf
 http://www.duneguide.com/sand_dune_guide_kermit.htm
 humanandnatural.com
 http://toptravellists.net/sunrise-sand-dunes-namibia.html
 bpham.com