| environ. |
salt plug A mass of salt which is injected as a diapir (a dome in which the overlying rocks have been ruptured by the squeezing-out of plastic core material) into overlying sedimentary rocks, thereby piercing and deforming them. The mechanism is similar to that of an intrusive magma, with the salt deforming and behaving plastically under pressure. It is of great economic importance because it assists in the formation of a "trap" structure for oil accumulation, in addition to its associated deposits of anhydrite, gypsum and sulphur (作为底辟(一个凸圆，在里面层叠的岩石被塑料芯的物质压榨)注入叠加在一起的层级岩中的大量的盐，这样可以刺穿和重塑它们。这个作用和岩浆的侵入相似，因为盐在压力下被重塑并变得具有可塑性。这个过程在经济上很重要，因为它有助于产生可用于石油的积累的"陷阱"结构，还可以积累硬石膏、石膏和硫。) |
