▁lowest ▁of ▁the ▁last ▁eight ▁gla cial ▁cycles . ▁ ▁Cor rel ations ▁ ▁Don ▁and ▁M IS ▁ 1 6 ▁are ▁usually ▁correl ated ▁to ▁each ▁other . ▁This ▁is ▁based ▁on ▁assumption ▁that ▁the ▁most ▁w ides p read ▁evidence ▁for ▁gla ci ation ▁in ▁the ▁C rom er ian ▁ought ▁to ▁be ▁associated ▁with ▁the ▁largest ▁gla ci ation ▁on ▁the ▁global ▁scene . ▁However , ▁the ▁time ▁resolution ▁of ▁current ▁age ▁determin ations ▁is ▁ins u fficient ▁for ▁a ▁clear ▁distinction ▁between ▁M IS ▁ 1 4 , ▁M IS ▁ 1 6 ▁and ▁M IS ▁ 1 8 . ▁It ▁is ▁unclear ▁why ▁the ▁major ▁gla ci ation ▁of ▁M IS ▁ 1 6 ▁has ▁left ▁very ▁little ▁evidence ▁in ▁the ▁ge ological ▁records ▁of ▁Western ▁Europe . ▁M IS ▁ 1 6 ▁is ▁believed ▁to ▁correspond ▁to ▁Pre - Ill ino ian ▁D ▁in ▁North ▁America . ▁ ▁See ▁also ▁▁ ▁Tim eline ▁of ▁gla ci ation ▁ ▁C rom er ian ▁ ▁Qu atern ary ▁ ▁References ▁▁ ▁Category : Qu atern ary ▁ge och ron ology ▁Category : I ce ▁ages ▁Category : P le ist oc ene ▁Category : G la ci ology ▁Category : P ale oc limat ology <0x0A> </s> ▁" T racy " ▁is ▁a ▁song ▁written ▁by ▁Lee ▁P ock r iss ▁and ▁Paul ▁V ance , ▁the ▁title ▁track ▁of ▁their ▁debut ▁LP . ▁ ▁The ▁single ▁was ▁released ▁in ▁ 1 9 6 9 ▁by ▁The ▁C uff