How do remnant highs differ from salt domes?

In the context of geology, salt domes and remnant highs are distinct structural features found within sedimentary strata.

A salt dome is a diapiric structure characterized by a vertical core of mobile material—typically halite—that has pierced or uplifted the surrounding rock layers. These structures are often associated with significant vertical relief and are formed by gravitational or tectonic forces that cause the salt to flow upward.123

In contrast, remnant highs, also known as turtleback highs, consist of strata that remain unaffected by the movement of salt. While the surrounding areas subside due to the migration of salt toward growing domes, these specific sections of strata are left behind as elevated features. Consequently, remnant highs differ from salt domes primarily because they lack a central salt core and possess significantly less vertical relief than the salt domes among which they are interspersed.3