Multiple choice The correct chronological sequence of periods of Pleistocene Ice Age is Riss-Gunz-Wurm-Mindel Gunz-Mindel-Riss-Wurm Mindel-Riss-Gunz-Wurm Riss-Wurm-Gunz-Mindal Reveal answer Fill a bubble to check yourself B Correct answer Explanation The four major glacial stages of the Pleistocene in the Alps, from oldest to youngest, are Gunz, Mindel, Riss, and Wurm. They are often remembered by their alphabetical order.