This can take place either in the oceanic crust, in which case the mountains formed are called island arcs, or along continental-oceanic margins. The Aleutian Islands are an example of an island arc, while the Andes range represent mountains formed by the subduction of an oceanic plate under a continental one.
Rare Book and Special Collections Division. The Northwest Ordinance, officially titled An Ordinance for the Government of the Territory of the United States North West of the River Ohio, was adopted by the Confederation Congress on July 13, 1787.lso known as the Ordinance of 1787, the Northwest Ordinance established a government for the Northwest Territory, outlined the process for admitting a new state to the Union, and guaranteed that newly created states would be equal to the original thirteen states.
(on Archives.gov). Officially titled An Ordinance for the Government of the Territory of the United States North-West of the River Ohio, the Northwest Ordinance was passed on July 13, 1787.on Archives.gov). Officially titled An Ordinance for the Government of the Territory of the United States North-West of the River Ohio, the Northwest Ordinance was passed on July 13, 1787.