e/Cliff-top dune

Information
has gloss	eng: Cliff-top dunes, also known as perched dunes, are dunes that occur on the tops of cliffs. They are uncommon in most parts of the world, because they only develop under unusual geomorphological conditions. Processes by which they may be formed include: * a dune advances up a pre-existing slope, which is then eroded to form a cliff; * a dune forms during a period of high sea level, then sea level drops, exposing a cliff face. They are most often seen as coastal landforms, but can also occur along lakes and rivers, and in deserts. Places where they are relatively common include the west coat of Jutland, Denmark. They can also be found in certain places along the shores of the Great Lakes in Michigan, including the Grand Sable Dunes in Pictured Rocks National Lakeshore and in the Sleeping Bear Dunes National Lakeshore, most dramatically on South Manitou Island.
lexicalization	eng: Cliff top dune
lexicalization	eng: Cliff-top dune
instance of	(noun) a ridge of sand created by the wind; found in deserts or near lakes and oceans sand dune, dune

Meaning
French
has gloss	fra: Une dune perchée est une dune située en sommet de falaise. Il sagit dune formation peu fréquente dans le monde, parce quelle ne se développe que sous certaines conditions géomorphologiques inhabituelles. Parmi les processus pouvant expliquer sa formation on peut citer les suivants : * une dune avance sur une pente préexistante, laquelle est ensuite érodée pour former une falaise ; * une dune se forme pendant une période de haut niveau marin, puis le niveau de la mer sabaisse, découvrant une paroi de falaise. Les dunes perchées sont le plus souvent considérées comme des formations côtières, mais elles peuvent aussi se trouver sur les rives de lacs ou de rivières.
lexicalization	fra: Dune perchee
lexicalization	fra: Dune Perchée