Erginal, Ahmet E.Kiyak, Nafiye G.Ozturk, Muhammed Z.Yiğitbaş, ErdinçBozcu, MustafaAvcioglu, MustafaOzturk, Beyhan2025-01-272025-01-2720121733-83871897-1695https://doi.org/10.2478/s13386-011-0053-2https://hdl.handle.net/20.500.12428/23914Micro-fabric characteristics and optically stimulated luminescence (OSL) dating results are presented to discuss the controlling agents and timing of beachrock cementation on the fresh-water Iznik Lake shoreline. The beachrocks are made up of grain-supported polygenic conglomerate containing 20.42% carbonate with encrusted grains, basically as micrite coatings, isopachous aragonite rims, cryptocrystalline void fills and meniscus bridges. The optical ages of twelve samples yielded ages that range from 4.226 +/- 0.569 ka on the lowermost beds to 0.706 +/- 0.081 on the uppermost. This is the first report of precipitation of marine-like cements in Iznik Lake. The abundant aragonite-dominated cement is likely indicative of precipitation-prone dry evaporative conditions from the climatic optimum to the last millennia.eninfo:eu-repo/semantics/openAccessBeachrock cementationCarbonate precipitationLate HoloceneIznik LakeTurkeyArticle391768310.2478/s13386-011-0053-2Q2WOS:0002983926000082-s2.0-84863905948Q3