How are salt domes related to other diapiric structures such as salt walls and salt anticlines?

Salt domes, salt walls, and salt anticlines are all classified as diapiric structures, or diapirs, which are geologic features formed by the upward movement of mobile material—such as salt—that pierces through more brittle, overlying rock strata.12

These structures are genetically related through their shared development processes, which are driven by gravitational forces, tectonic forces, or a combination of both. While "classic" salt domes may form directly from bedded salt due to gravitational stress, they can also evolve from salt walls and salt anticlines when gravitational stress is superimposed on salt masses that initially formed under tectonic pressure.13

In this evolutionary context:
* Salt pillows represent an early stage of development where salt begins to flow from an undeformed bed.3
* Salt walls and anticlines are related structures where salt migrates upward, often piercing or folding the surrounding rock.1
* Salt domes typically represent a more advanced, plug-shaped piercement structure that can develop as these other salt masses continue to grow and penetrate the overlying strata.13