Lobate debris apron

Lobate debris aprons (LDAs) are geological features on Mars, first seen by the Viking Orbiters, consisting of piles of rock debris below cliffs. These features have a convex topography and a gentle slope from cliffs or escarpments, which suggest flow away from the steep source cliff. In addition, lobate debris aprons can show surface lineations as do rock glaciers on the Earth. File:Wikictxp13clifflda.jpg|alt=Wide view of mesa with CTX showing Cliff face and location of lobate debris apron (LDA) Location is Ismenius Lacus quadrangle.|Wide view of mesa with CTX showing cliff face and location of lobate debris apron (LDA) Location is [[Ismenius Lacus quadrangle]]. File:Wikifretesp 028313 2220cliff.jpg|Enlargement of previous CTX image of mesa This image shows the cliff face and detail in the LDA. Image taken with [[HiRISE]] under [[HiWish program]]. Location is [[Ismenius Lacus quadrangle]]. File:Wikildaf03 036777 2287.jpg|alt=Lobate debris aprons (LDAs) around a mesa, as seen by CTX. Mesa and LDAs are labeled so one can see their relationship. Radar studies have determined that LDAs contain ice; therefore, these can be important for future colonists of Mars. Location is Ismenius Lacus quadrangle.|Lobate debris aprons (LDAs) around a mesa, as seen by CTX. Mesa and LDAs are labeled, so one can see their relationship. Radar studies have determined that LDAs contain ice; therefore, these can be important for future colonists of Mars. Location is [[Ismenius Lacus quadrangle]]. File:WikiESP 036777 2290lda.jpg|Close-up of lobate debris apron (LDA), as seen by HiRISE under HiWish program File:Lobate Debris Apron in Phlegra Montes.JPG|alt=Lobate debris apron in Phlegra Montes, as seen by HiRISE. The debris apron is probably mostly ice with a thin covering of rock debris, so it could be a useful source of water. Scale bar is 500 meters long.|Lobate debris apron in [[Phlegra Montes]], as seen by HiRISE. The debris apron is probably mostly ice with a thin covering of rock debris, so it could be a useful source of water.