Cape Verde
Canary Islands
The Canary Islands
The Volcanic Marianas Islands form west of the Marianas trench because plates are formed by underwater volcanoes which will move gently to the west.
They formed to the west of the trench because that is where the submerged mountain range is. The islands are volcanic due to the water the islands carry under the Mariana plate.
There are 13 major volcanic islands in the Galápagos Islands archipelago, formed from volcanic activity along the Nazca Plate tectonic boundary. These islands are located in the Pacific Ocean about 1,000 km west of Ecuador.
The islands located south of the equator at 60 west longitude are part of the South Sandwich Islands. This remote British Overseas Territory in the southern Atlantic Ocean consists of a chain of 11 volcanic islands.
The group of four Caribbean islands is called The Windward Islands. These are Grenada, St. Lucia, Dominica, and St. Vincent. They are known by that name because they face the Trade Winds in a line of volcanic peaks. The group of six islands in the Caribbean is known as The Leeward Islands. These lie in two lines. To the west, the rain-forested peaks of a volcano chain include Montserrat, Nevis, and St. Kitts. To the east are the volcanic ranges of Antigua, Barbuda, and Anguilla.
They are group of volcanic islands lying along the equator in the Pacific Ocean west of the mainland of Ecuador. Thus, they are not on a continent but lie west of the South American continent in the Pacific Ocean.
Galapagos Islands
If an ocean trench is located west of volcanic islands, you can assume that there is a continental shelf nearby. You can also assume that the trench is at least 7000Êm deep.
A group of volcanic islands in the northern Atlantic Ocean about 1,448 km (900 mi) west of mainland Portugal, of which they are administrative districts. Fishing, farming, and tourism are important to their economy.