Labels also have special number codes, which represent the following: 1  0 = means minimal hazard. 2  1 = means slight hazard. 3  2 = means moderate hazard. 4  3 = means serious hazard. 5  4 = means severe hazard.
A good way to summarize the paper by Snelling and Matthews is by presenting the timeline given in the article and accompanying poster: AiG Ice Age Timeline. 1  2350 B.C.âNoahs flood. 2  2350 to 2250 B.C.âAntarctica becomes covered by forests, then gets covered by its ice cap.  2250 to 2000 B.C.âIce age on the rest of Earth.
The theoretical extent of these ice sheets during the ice age 1.5 mya is shown in white on the map below. (White area = maximum glacial extent 1.5 million years ago in the Pleistocene Epoch - Microsoft Encarta) Ice ages are said to have occurred every 150 million years, and last for at least 1 million years. According to the ice age theory, our current warm period will end with the beginning of another cold phase in 23,000 years time. Geologists claim that there have been 5 major ice ages. During ice ages the boundary of the ice sheet is hypothesised to spread and contract in cycles.