[3] Faure and Mensing[1] argue that the glassy and "pseudo-volcanic" rocks that compose the majority of the Butcher Ridge igneous complex are incompatible with it being a hypabyssal intrusion.

Based on this and together with an associated strong magnetic anomaly and other features, they concluded that the Butcher Ridge igneous complex should be seriously investigated as a possible asteroid impact structure.

A rock spur 2 nautical miles (4 km) northwest of Mount Ayres on the Butcher Ridge, in the Cook Mountains.

A spur on the north face of Butcher Ridge, in the Cook Mountains of Antarctica, 5.5 nautical miles (10 km) northwest of Mount Ayres.

It was named after Anne McCafferty, a geophysicist with the United States Geological Survey (USGS), who in 1991–92 worked on a USGS aeromagnetic survey over the Ross Ice Shelf and, in a cooperative USGS–German project, participated in the first aeromagnetic flight across the Butcher Ridge and Cook Mountains.