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 tradition of a service banner with a blue star covered with silver threads to represent wounded service personnel began in 1917 or 1918 following the suggestion of Womenâs Committee of the Council of National Defenses, but faded from use sometime between World War I and World War II.he Silver Star Service Banner is reserved for those who have been wounded, contracted a serious illness or injury in a war zone. The Silver Star Service Flag may be flown by anyone as a symbols of remembrance and honor. It may be flown during war or peace time.