Galapagos Islands map overlay
The Galapagos Islands are found 1000 kilometres (600 miles) off the west coast of Ecuador, South America. The archipelago is made up of 13 large islands, 6 smaller islands and 107 rocks and islets. The very first island is thought to have formed between 5 and 10 million years ago, as a result of tectonic activity. The youngest islands, Isabela and Fernandina...
Wolf, the highest volcano of the Galápagos Islands, straddles the equator at the north end of the archipelago's largest island, Isabela. The 1710-m-high Volcán Wolf has steeper slopes than most other Isabela volcanoes, reaching angles up to 35 degrees. A 6 x 7 km caldera, at 700 m one of the deepest of the Galápagos Islands, is located at the volcano's summit. A prominent bench on the west side...
On October 22, 2005, the Sierra Negra Volcano on Isla Isabela in the Galapagos Islands began erupting, sending ash as high as 12,800 meters (42,000 feet), according to the U.S. Geological Survey. This overlay image shows a strong plume of volcanic ash and steam flowing from the Sierra Negra Volcano on Isla Isabela and blowing to the southwest over the Pacific.
The Leeward Islands are the northern islands of the Lesser Antilles. They are called "leeward" because the prevailing winds in the area blow from south to north. Thus, the Leeward Islands are downwind, on the backside, or leeward from the Windward Islands, the group of islands that first meet the Trade Winds coming from the south.
The Sierra Negra Volcano in the Galapagos Islands began erupting on October 22, 2005. In early November, it was still producing ash clouds and lava flows. In fact, Sierra Negra’s lava flow was so hot it could be seen at night—by a thermal infrared satellite sensor, that is.
Hawaiian Islands (historically the Sandwich Islands) in the Pacific Ocean. All of the Islands were formed by volcanoes arising from the sea floor through a vent described in geological theory as a hotspot.