the remains of a now-vanished volcano in New Mexico. Sedimentary rocks surround this igneous feature. Explain why these once deeply buried igneous features now stand high above the surrounding terrain. What term applies to this situation?

The volcano is a contrasting igneous feature which forms due to the rising up of magma near the surface of the earth. In the given condition, there is the presence of some remnants of a now-vanished volcano in New Mexico, and this volcano is surrounded by the sedimentary rocks.

This igneous feature that was once deeply buried is now standing high above the surrounding terrain, and this is because of the weathering and erosion of the sedimentary rocks.

Weathering and erosion is a common process where the rocks disintegrates due to physical, chemical, biological processes. The agents that drives the weathering process are water, wind, and ice.