▁Aleks andr ▁Mik h ay lov ich ▁Sib iry akov , ▁an ▁Imperial ▁Russian ▁gold - mine ▁propriet or . ▁ ▁Sib iry akov ▁fin anced ▁expl or ations ▁to ▁Si ber ia , ▁such ▁as ▁Nord ens ki öld ' s , ▁and ▁also ▁took ▁part ▁in ▁some ▁exped itions ▁of ▁his ▁own . ▁ ▁Ad j acent ▁islands ▁ 1 2   km ▁off ▁Sib iry akov ▁Island ' s ▁northern ▁c ape ▁lies ▁a ▁narrow ▁and ▁cur ved ▁group ▁of ▁three ▁islands ▁known ▁as ▁N os ok ▁Island ▁( О стров ▁Но сок ; ▁Ost rov ▁N os ok ). ▁ ▁References ▁ ▁Nature ▁Reserve : ▁▁ ▁Encyclop ædia ▁Britannica . ▁ ▁See ▁also ▁K ara ▁Sea ▁ ▁Category : Is lands ▁of ▁the ▁K ara ▁Sea ▁Category : Is lands ▁of ▁K ras no yar sk ▁K rai <0x0A> </s> ▁The ▁Don ▁Gla ci ation , ▁also ▁known ▁as ▁the ▁Don ian ▁Gla ci ation ▁and ▁the ▁Don ian ▁Stage , ▁was ▁the ▁major ▁gla ci ation ▁of ▁the ▁East ▁European ▁P lain , ▁ 0 . 5 – 0 . 8 ▁million ▁years ▁ago , ▁during ▁the ▁C rom er ian ▁Stage ▁of ▁the ▁Middle ▁Ple ist oc ene . ▁It ▁is ▁correl ated ▁to ▁Marine ▁Is ot ope ▁Stage ▁ 1 6 ▁( M IS ▁ 1 6 ), ▁approximately ▁ 6 5 0 , 0 0 0 ▁years ▁ago , ▁which ▁glob ally ▁contained ▁one ▁of ▁the ▁largest ▁gla cial ▁volumes ▁of ▁the ▁Qu atern ary