f Analysis Of The Ironstones (Upper Lochkovian And Middle Givetian) Within Carbonate Platform Succession (Nw Anatolia): A Paleoclimatic Approach

Paleoclimate of the Devonian is generally known as warm and carries the important contribution of plant communities. Climate in the Lower Devonian is generally arid and dry in the southern hemisphere, and characterised by presence of evaporites and paleosoils. In the Middle Devonian, it presents a relatively warmer snap. This warming is reflected as presence of coal desposits. In the Upper Devonian, there is cold snap and associated with presence of glaciers (Boucot, 2009). Joachimsky et al (2009), on the other hand, suggested that the lower – middle Givetian was characterised by cooler T with about 20-22°C and upper Lochkovian by warm tropical temperatures with around 30 °C using global isotope data set.