As the desert weather evaporated the lake water, the gypsum crystals were left behind and eventually formed the continually growing sand dunes.
(the gypsum crystals; were left; behind; T:As the desert weather evaporated the lake water) (the gypsum crystals; formed; the continually growing sand dunes; T:As the desert weather evaporated the lake water; T:eventually)
the gypsum crystals the gypsum crystals
were left formed
behind T:As the desert weather evaporated the lake water
the continually growing sand dunes T:As the desert weather evaporated the lake water T:eventually