 Complete the following phrase:  Deep sea core samples have identified approximately 10 marine isotope stages at least MIS 21 to MIS 11 during Gunz. Thus, there have probably been about 5 glacial cycles of varying intensity during Gunz. During Gunz the 41 000 year glacial cycle of previous stages Biber and Danube had been replaced by a domice of a 100,000-year cycle Mid-Pleistocene Transition. The most intense glacials of Gunz MIS 16 and MIS 12 reached similar extents to those of the more recent 