sol·on·chak 
(sŏlən-chăk′)
(sŏlən-chăk′)n.
A soil rich in soluble salt, often having a salt crust and mineral deposits to a depth of one foot, formed in areas of high evaporation, especially where the water table is close to the surface.
[Russian solončak, from solonets, salty soil, salty lake; akin to Old Church Slavonic slanŭ, salty; see sal- in the Appendix of Indo-European roots.]