A scalloped margin dome is a type of volcanic dome, found on Venus, that has experienced collapse and mass wasting such as landslides on its perimeter. The margins of these domes have  headscarps or 'scallops' separated by ridges that are a consequence of adjoining scallops.
On Venus, scalloped margin domes are a type of volcanic dome that has been affected by collapse and mass wasting, such as landslides, along its edges. The margins of these domes feature 'scallops' or headscarps separated by ridges, which are caused by the adjacent scallops.