Güvem Formation
The Güvem Formation is a geologic formation in Turkey. It contains plant fossils dating back to the Early Miocene, and is especially notable for preserving evidence of insect damage to plants. The formation is roughly thick and is made up of pyroclasts, rhyolite, andesite and various dacites. Pollen grains from this formation have been researched and indicate the presence of mixed-mesophytic forest in the range.