What is another word for diapir?
Pronunciation: [dˈa͡ɪəpˌi͡ə] (IPA) 
Diapir is a geological term used to describe a type of intrusion that occurs when a dense and relatively mobile material moves upward and displaces the overlying rocks. Synonyms that are typically used in the field of geology include "salt-metallic," "gravity-driven," and "magma-driven" diapirs. These terms are applied based on the material that is being driven upward, with salt and metal being common examples. Other related terms include "culmination points," which are the highest points that an intrusion reaches, and "feeders," which refer to the channels through which the material travels. The study of diapirism is an important area of geology that helps scientists better understand the complex processes involved in the movement of materials deep within the earth's interior.
