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Ahmet E. Erginal Nafiye G. Kiyak Muhammed Z. Ozturk Erdinc Yigitbas Mustafa Bozcu Mustafa Avcioglu Beyhan Ozturk 《Geochronometria》2012,39(1):76-83
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. 相似文献
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