Fall River granite

Fall River granite is a Precambrian bedrock underlying the City of Fall River, Massachusetts and surrounding areas along the eastern shores of Narragansett Bay. It was formed 600 million years ago, as part of the Avalon terrane.^[1]

During the 19th century, the City of Fall River, Massachusetts became famous for the granite rock on which much of the city is built. The ridge extends approximately 20 miles (32 km) from the village of Assonet in the north through Fall River and into Tiverton, Rhode Island in the south, along the edge of the basin that forms Narragansett Bay. The eastern edge of the underlying granite is the Hixville Fault near Dartmouth, Massachusetts.