Variations in hydrogen and oxygen isotope composition of meteoric water across the Central Anatolian Plateau

We present hydrogen and oxygen isotope compositions of modern surface waters such as springs, small tributaries and lakes from the Central Anatolian Plateau (CAP) in an attempt to place quantitative constraints on the orographic and continentality effects that ultimately determine meteoric water composition within the plateau interior. The aim of this ongoing study is to provide a robust dataset of surface water δD and δO values across the CAP and the topographically pronounced Pontide and Tauride mountain ranges at its northern and southern margin, respectively. These values serve as direct proxies for the spatial pattern and magnitude of the orographic, continentality and aridity effects, which are fundamental in modifying meteoric water compositions during cloud formation, ascent, rainout and surface runoff. Our proxy data will then serve to reconstruct the δO of surface water from which Neogene to recent fluvio-lacustrine and pedogenic carbonates. We conclude that despite, changing local climatic conditions proxy data for δO and dD in meteoric waters have been strongly controlled by the uplift of the CAP.