Which mineral is deposited on the surface of a sabkha, while gypsum and aragonite precipitate in the subsurface?
Answer and explanation
Correct answer: D. Halite
- Step 1: Halite is deposited on the surface of the sabkha, and gypsum and aragonite precipitate in the subsurface via capillary action from brines brought up from the water table. Answer: Halite. The halite is frequently re-dissolved when wetted. Why not the others: Pure elemental sulphur, Calcium silicate hydrate and Iron oxide hematite don't fit.
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