Hydrogeological and hydrochemical investigation in the Burdur Saline Lake Basin, southwest Turkey


Şener Ş. , Şener E. , Davraz A. , Varol S.

Chemie Der Erde-Geochemistry, vol.80, pp.1-14, 2020 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 80
  • Publication Date: 2020
  • Doi Number: 10.1016/j.chemer.2019.125592
  • Title of Journal : Chemie Der Erde-Geochemistry
  • Page Numbers: pp.1-14

Abstract

The Burdur Saline Lake Basin is semi-closed and it is situated in the southwest of Turkey. This saline and highly

alkaline lake has a tectonic origin. Alluvium represents the most important aquifer and other aquifer is granular

and karstic in nature. In the present study, we collected 35 groundwater samples and analyzed them to characterize

the groundwater chemistry and investigate hydrogeochemical processes. Na+, Ca2+, Mg2+, HCO3

2−

and SO4

2− are the dominant ions and the samples are grouped into different hydrochemical facies such as

Ca–HCO3, Ca–Mg–HCO3, Mg-Ca-HCO3, Na-Mg-SO4 and Na-SO4-HCO3. Limestone, silicate and gypsum controlled

the groundwater chemistry through reverse ion exchange, dissolution of carbonates and silicate

weathering. Presence of more iron, arsenic and boron in the groundwater is geogenic. The statistical analysis, i.e.

R-mode factor, determined interrelationships within the chemical data through five factors accounting 85.32 %

of the total variance of the dataset. Factor 1 is represented by strong loadings of EC, TDS, Mg2+, Na+, SO4

2−, As

and B, and moderate loadings of K+ and Cl-. Factor 2 has strong positive loadings for Ca and CO3-, and moderate

negative loading for pH. Factor 3 has strong positive loadings for Zn and has moderate positive loading for Cl-.

Factor 4 has strong negative loadings for T (°C), and has moderate positive loadings for pH and K+. Factor 5 has

strong positive loadings for HCO3- and has moderate positive loading for Fe. Geochemical variables of Factors 1,

2, 4 and 5 represented the natural hydrogeochemical processes like water-rock interaction. The variables present

in factor 3 reflected the anthropogenic effects in the Burdur Lake Basin.