A place near Quetta about 40km west to quetta called jangal pir alizai has salt underground water. And in winter ,this region earth surface change their surface colour as white as like snow. But it is due to salinity at the region. So what is the reason of this region plate?
Well,
The salt that appeared on the land surface is coming from salty or brine groundwater in a mechanism of capillary action.
Regards
Hi Sadam:
One of the major sources is seawater intrusion to make groundwater saline. however, Quetta is about 600 km away from the sea which means saltwater intrusion is not possible.
Another potential reason could be the dissolution of minerals in the saturated and unsaturated zones. Salt deposits, such as halite or gypsum, can be found in many sedimentary basins and are highly soluble. Other deposits are less soluble but can contribute dissolved solids when in contact with water over longer periods of time. This means it is important to investigate the characteristics of rocks of aquifer or groundwater zone to understand if it is caused by rocks of the aquifer.
It is also possible to movement of saline groundwater from adjacent aquifers. It is also possible to have leached from saline soils or road salts. Salts at the land surface can leach to shallow groundwater. Evapotranspiration can concentrate dissolved salts in the soil where it subsequently can infiltrate to shallow groundwater, especially where precipitation rates are low.
Overall, it is important to conduct some tests to better understand the potential causes of groundwater being saline. In addition, whatever (snowy) you see on the ground surface is indeed a salt accumulation that has been deposited after surface salty water gets evaporated or as Bayan said saline groundwater appeared at the surface through capillary action and then water gets evaporated leaving salt on the surface. I hope it helps.
Thank you
One source of saline water is purely geological, meaning that it is rock-related. Groundwater is always in contact with rocks, which are formed by aggregation of minerals. With their constant contact with the rock, the rock-forming minerals dissolve into the water. When the rock-forming mineral is rich in chlorides, such as halides, water from such areas would be highly saline.
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