Geochemistry Symposium edition:5 location:Pamukkale University - Denizli / TURKEY date:23-25 May 2012
The Ballık continental carbonates were geochemically characterized using
Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and a δ18O, δ13C and
strontium stable isotopic analysis. The geochemical delineation of the lithofacies,
characterizing certain depositional environments, can be used in a chemo-stratigraphic
approach to correlate the geobodies. Based on the stable isotopic composition the fluido
characteristics and possible source rocks are deduced. The combination of these results
contributes to the reconstruction of the depositional history of the studied travertines.
The continental carbonates are characterized by low trace element concentrations
compared to marine carbonates, with the exception of high strontium concentrations.
Aluminum, iron, nickel, titanium and silicon show similar trends within the different vertical
lithologs, what makes them suited for correlation. Progressive alteration due to diagenetic
stabilization with meteoric waters, as described by Brand and Veizer (1980), is recognized by
a decrease of strontium, sodium, magnesium and a coinciding increase of manganese and
iron towards the top of the different sections.
The Ballık continental carbonates have δ13C values between -3.83 and 2.60 ‰ V-PDB
and δ18O values from -9.39 to -5.72 ‰ V-PDB. δ13C values decrease towards the top of the
different vertical sections, while δ18O stays more or less constant. The 87Sr/86Sr isotopic ratio
for the analyzed samples is 0.70786 ± 0.00005. These results point to deposits from a fluid,
that inherited the carbon and strontium isotopic signature of dissolved Triassic marine
carbonates, and indicate the Lycian Nappes as possible source rock.