In postglacial times lava bombs, lapilli and volcanic ash were deposited on previously glaciated terrain. The volcanic system consists of lava fields, postglacial basaltic crater rows, and small shield volcanoes. After a glacier retreats, the end moraine may be destroyed by postglacial erosion. Temperatures of the postglacial magmas have been estimated at . The black rat occurred in prehistoric Europe and in the Levant during postglacial periods. The mostly postglacial Lake unit includes glassy rhyolite, which is poor in crystals. Phenocrysts in the postglacial rocks are biotite, plagioclase and quartz. Thus, the observations of postglacial rebound provide a natural experiment to measure mantle rheology. In the postglacial period, the taiga developed. The lake is a remnant of the postglacial Lake Nipissing. Conditions favourable for human settlement occurred in the present Wyrzysk Region in the postglacial period. Native distribution was driven by postglacial melt from the Mississippi River. The Gulf of Utica was formed during the postglacial transgression about 6,000 years ago. Most of the island consists of forests and postglacial hills. Understanding postglacial rebound is also important to our ability to monitor recent global change.