<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Micro-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.</p></abstract>

Micro-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.

First note on marine-like cementation of Late Holocene beachrock, Iznik Lake (Turkey)

Department of Geography, Canakkale Onsekiz Mart University, TR-17100, Canakkale, Turkey

Department of Physics, Işık University, TR-34980, Şile, Istanbul, Turkey

Department of Geology Engineering, Canakkale Onsekiz Mart University, TR-17020, Canakkale, Turkey

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Micro-fabric characteristics and optically stimulated luminescence (OSL) dating results are presented to discuss the controlling agents and timing of beachrock...

First note on marine-like cementation of Late Holocene beachrock, Iznik Lake (Turkey)

Publié en ligne: 25 déc. 2011

Pages: 76 - 83

DOI: https://doi.org/10.2478/s13386-011-0053-2

Mots clés
Beachrock cementation, Carbonate precipitation, Late Holocene, Iznik Lake, Turkey

© 2011 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

First note on marine-like cementation of Late Holocene beachrock, Iznik Lake (Turkey)

Publié en ligne: 25 déc. 2011

Pages: 76 - 83

DOI: https://doi.org/10.2478/s13386-011-0053-2

Mots clésBeachrock cementation, Carbonate precipitation, Late Holocene, Iznik Lake, Turkey

© 2011 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Beachrock cementation, Carbonate precipitation, Late Holocene, Iznik Lake, Turkey