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Marthas Vineyard

Marthas Vineyard

Marthas Vineyard vĭn´yərd [key], island (1990 est. pop. 8,900), c.100 sq mi (260 sq km), SE Mass., separated from the Elizabeth Islands and Cape Cod by Vineyard and Nantucket sounds. As a result of glaciation, the island has morainal hills composed of boulders and clay deposits in the north,