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 cliffin addition lobate debris aprons can show surface lineations as do rock glaciers on the earthobate 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
The Silver Star, officially the Silver Star Medal, is the third-highest military decoration for valor awarded to members of the United States Armed Forces.he Silver Star is the successor award to the  Citation Star  (3â16 silver star) which was established by an Act of Congress on July 9, 1918.
The Bronze Star Medal, unofficially the Bronze Star, is a United States decoration awarded to members of the United States Armed Forces for either heroic achievement, heroic service, meritorious achievement, or meritorious service in a combat zone.