Does the Earth Impact Database include Unconfirmed Structures?
Prospective new impact structures are only added to the listing if convincing details of shock metamorphic features, associated shatter cones or other similarly unambiguous evidence of formation by impact is presented, preferably in a published format. By excluding other prospective impact structures, we hope to maintain the integrity of the listing. As such, many promising but hitherto unproven impact structures are not included in the primary list.
