Ann: Potential Lithium-Bearing Brine Zone Identified at Carachi, page-32

Also worth noting that the cross section image only shows Zone 1-3......
According to the detail further down the report; Zone 4 and 5 could be the money pots.

"- Unit 4 or Lower Very Conductive Zone: brine-saturated sandy facies (?) and/or brine saturated Tertiary or Permian sediments (?) Lower Conductive Zone: Quaternary sediments
saturated with salt to brackish water or more clayey facies.
- Unit 5 or Lower Conductive Zone: sandy facies saturated with brine (?) and/or Tertiary or
Permian saturated sediments (?)."