Table 3: A lithological column of Gachsaran Formation at Well No. #AZ 509.

Formation Type Top(m) Bottom(m)
Gachsaran(member#7) Anhydrite/shale/marl 1825 1915
Gachsaran(member#6) Anhydrite/shale/marl 1915 2056
Gachsaran(member#5) Halite 2056 2299
Gachsaran(member#4) Halite 2299 2407
Gachsaran(member#3) Anhydrite/marl/ Halite 2407 2606
Gachsaran(member#2) Halite 2606 2718
Gachsaran(member#1) Shale/limestone/ Anhydrite 2718 2795