Geofluids

Research Article

Processes Governing Alkaline Groundwater Chemistry within a Fractured Rock (Ophiolitic Mélange) Aquifer Underlying a Seasonally Inhabited Headwater Area in the Aladağlar Range (Adana, Turkey)

Table 1

Mineralogical composition of the selected rock (R1–R10) and soil (S1–S8) samples from the Kızılgedik area as determined by X-ray diffraction (XRD) analysis.
Sample numberLzAtgOlQzChrCalDolAnkMgsHemDckKlnVrmClcDiPhl
R1KkmSerpentinite++++   +         +
R2KkmSerpentinite+++   +           
R3KkmSerpentinite+++ +             
R4TkpLimestone     +++          
R5TkaLimestone     +++          
R6TRJeLimestone     ++++         
R7KkmExotic block     +++          
R8KkmExotic block++    +++++++ +     
R9KkmExotic block+++  +++     ++  +   
R10KkmFracture fill      +++      +  
S1KkmSerpentinite+++ ++     ++ ++++ 
S2KkmSerpentinite +++ +        ++   
S3KkmSerpentinite++++++          +   
S4KkmSerpentinite+++           +   
S5KkmSerpentinite+++        ++      
S6KkmSerpentinite+++++ ++     ++ +++  
S7KkmSerpentinite+++       +   +   
S8KkmExotic block   + +++++         
Abbreviations for names of mineral phases are from Whitney and Evans [85]. Lz = lizardite, Atg = antigorite, Ol = olivine, Qz = quartz, Chr = chromite, Cal = calcite, Dol = dolomite, Ank = ankerite, Mgs = magnesite, Hem = hematite, Dck = dickite, Kln = kaolinite, Vrm = vermiculite, Clc = clinochlore, Di = diopside, and Phl = phlogopite. Pluses indicate relative abundance of mineral phases (+++ = major, ++ = minor, and + = trace) as judged from XRD peak intensities. Lithology refers to the principal geological formation exposed at the surface in the sampling site (see Figure 3 for geological formation descriptions). Source refers to the principal rock type or parent material occurring in the sampling site.