Geography of New York City Bronx and Manhattan from Northern New Jersey. The Harlem River, another tidal strait between the East and Hudson Rivers, separates Manhattan from the Bronx. The boroughs of New York City straddle the border between two geologic provinces of eastern North America. Brooklyn and Queens, located on Long Island, are part of the eastern coastal plain. Long Island is a massive moraine which formed at the southern fringe of the Laurentide Ice Sheet during the last Ice Age. The Bronx and Manhattan lie on the eastern edge of the Newark Basin, a block of the Earth's crust which sank downward during
Caribbean immigration to New York City community as "Loisaida"), Spanish Harlem and Williamsburg, Brooklyn since the 1950s. There are large Puerto Rican populations throughout the 5 boroughs, with the Bronx having the largest. Currently, Bushwick and several South Bronx neighborhoods, such as Soundview, have some of the largest numbers of Puerto Ricans in the city. However, there has been an increase in Puerto Ricans in outlying areas of the city, such as the North Shore of Staten Island, and the eastern Bronx. Caribbean immigration to New York City Caribbean immigration to New York City has been prevalent since the early 1900s. This immigration wave saw large