<Table> <Tr> <Th_colspan="2"> Canadian Shield Stratigraphic range: Precambrian Had'n Archean Proterozoic Pha . </Th> </Tr> <Tr> <Th> Type </Th> <Td> Shield </Td> </Tr> <Tr> <Th> Unit of </Th> <Td> North American craton </Td> </Tr> <Tr> <Th> Sub-units </Th> <Td> Laurentian Upland Kazan </Td> </Tr> <Tr> <Th> Area </Th> <Td> 8 000 000 km </Td> </Tr> <Tr> <Th_colspan="2"> Location </Th> </Tr> <Tr> <Th> Region </Th> <Td> North America </Td> </Tr> <Tr> <Th> Country </Th> <Td> Canada United States </Td> </Tr> <Tr> <Td_colspan="2"> The Canadian Shield is a broad region of Precambrian rock (pictured in shades of red) that encircles Hudson Bay . It spans eastern, northeastern, and east - central Canada and the upper midwestern United States . </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Canadian Shield Stratigraphic range: Precambrian Had'n Archean Proterozoic Pha . </Th> </Tr>

Which of these resources is most associated with the area known as the canadian shield