<Tr> <Th> Speed </Th> <Td> 15--25 mm (0.59--0.98 in) / year </Td> </Tr> <Tr> <Th> Features </Th> <Td> North America, Greenland, Bering Sea, Atlantic Ocean, Arctic Ocean </Td> </Tr> <Tr> <Td_colspan="2"> Relative to the African Plate </Td> </Tr> <P> The North American Plate is a tectonic plate covering most of North America, Greenland, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores . It extends eastward to the Mid-Atlantic Ridge and westward to the Chersky Range in eastern Siberia . The plate includes both continental and oceanic crust . The interior of the main continental landmass includes an extensive granitic core called a craton . Along most of the edges of this craton are fragments of crustal material called terranes, accreted to the craton by tectonic actions over a long span of time . It is thought that much of North America west of the Rocky Mountains is composed of such terranes . </P>

Where are the tectonic plates located in the united states