It doesn’t seem to meet the basic wiki definition:
“Geographic features, or geographical formations, are components of a planet that can be referred to as locations, sites, areas, or regions (and therefore may show up on maps).”
No
Although my wrangling with the question is a hint of sorts.
Let me attempt to clarify. It is the discovery of something occurring in nature, related to land, but it is not a particular bay, hill, river, lake, valley, or similar “geographic feature” that someone would use to fill in a previously unknown blank spot on a map.