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Slate Islands (Ontario)
The Slate Islands archipelago is formed of two main islands, five minor islands and numerous islets located in northern Lake Superior, south of the town of Terrace Bay. The islands were created by a meteorite impact which formed a crater about wide.〔Sharpton, Dressler, (1996), p. 1177〕 In 1985, the Ontario government established the Slate Islands as a natural environment provincial park. The islands are notable for having Ontario's largest herd of boreal woodland caribou.
The total surface area is about . The nearby Leadman Group of islands east is often considered part of the Slate Islands.
==Flora==
The cooling effect of Lake Superior makes the Slate Islands a particularly harsh habitat for its latitude. As a result, islands harbour arctic and alpine plant species such as alpine chickweed (at its most southerly occurrence),〔Pye (1997), p. 83〕 ''Dryas drummondii'' (not found again for 1600 km (1000 mi) north),〔 and alpine bistort, an Inuit delicacy eaten with seal oil. These arctic disjuncts are reminders of ice ages and associated tundra conditions in this area in the past.
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