Where we could not find ice sheet?
in the Arctic Ocean
in South America
in Antarctica
in Greenland
An ice sheet is a mass of glacier ice that covers surrounding terrain and is greater than 50,000 km2  this is also known as continental glacier. The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America.  
reach: rather globalAntarcticAntarcticaArcticGreenlandSouth America
Answers by country
in the Arctic Ocean
in South America
in Antarctica
in Greenland
answers
 Greece
Greece12
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Canada11
 Australia
Australia18
 Poland
Poland2738
 India
India34
 the United States
the United States96
 the United Kingdom
the United Kingdom84
 Switzerland
Switzerland30
 Republic of Ireland
Republic of Ireland20
 Germany
Germany268
 Austria
Austria46
 Unknown
Unknown11