TY  - BOOK
AU  - Raktim Ranjan Saikia
AU  -  Chaitra Dhar Taye
TI  - Physico-chemical parameters of traditional salt producing springs of Ancient Assam, Northeast India
KW  - Anthropogenic impact
KW  - Arunachal Pradesh
KW  - Physico-chemical parameter
KW  - Salt spring
KW  - SEM-EDS
KW  - Traditional use
N2  - Three salt springs of ancient Assam (currently in a part of Assam and Arunachal Pradesh, Northeast India) situated in the Mohong  area  (Phullung  and  Khela)  and  Samkhor  have  been  studied  to  bring  out their  physico-chemical  characteristics  by using  ionic  concentration  ratios  along  with  SEM  and  EDS  techniques.  The  high  TDS  values  of  the  studied  salt  springs (wells)  under  investigation  infers  mildly  brackish  water  type.  The  Disang  Group  of  rocks  are  the  dominant  lithotypes connected  with  the  spring.  The  positive  correlation  between  Na+  and  Cl-  indicates  the  samples  have  an  origin  including halite  (NaCl)  dissolution,  which  may  imply  that  the  study  area's  saline  and  salty  springs  come  from  the  incongruent dissolution  of  halite.  The  larger  concentrations  of  almost  all  ionic  values  of  Cl-,  SO42-,  Ca2+,  Mg2+,  and  K+  were  found  inPhullung and Khela, while lower values were found in Semkhor, which suggests that from Semkhor to Phullung and Khela (i.e., towards northeast), the concentration of salinity increases. The occurrences of the development of crystal phases in the SEM and EDS results also substantiate the salinity increasing trend towards the northeast. The studied samples have lower Na+/Cl-,  K+/Cl- and  SO42-/Cl-  indicating  a  deeper  aquifer  source  and  minimal  anthropogenic  impact.  The  average  value  ofsodium absorption ration (SAR) of 30.62 indicates that the studied water quality is not permissible for agricultural use. Thenegative BEX values ranging from -20.58 to -203.74 suggest that the aquifer of the studied well are being salinized
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