Most of the world's geysers are found in the United States, Russia, Chile, New Zealand and Iceland. Worldwide, there are only about 1000 geysers. Over 50 percent of the world's active geysers are located in Yellowstone National Park.Know More
The volcanic rock rhyolite is particularly effective at hosting geysers. Most of the geyser fields in the world have formed in rhyolite or similar silica-laden rocks, such as ignimbrite. The conditions required for geysers to form include hot rocks below the geysers, an ample ground water source, a subsurface water reservoir and fissures to deliver water to the surface.
The most famous geyser in the world is "Old Faithful" in Yellowstone National Park, which erupts regularly about every 60 to 90 minutes. The tallest active geyser in the world as of 2014 is the Steamboat Geyser, also located in Yellowstone National Park. Some of its eruptions blast water as high as 400 feet into the air. Until 1902, Waimangu Geyser in New Zealand was the tallest geyser in the world, with eruptions blasting jets of water up to 1600 feet in the air. Since the 1960s, the volcanic heat and abundant water found in geyser fields have been increasingly harnessed to produce geothermal energy.Learn more about Geology
Yellowstone Net names fountain and cone geysers as the two principal types; geysers are hot springs that erupt periodically. Fountain geysers shoot water out in various directions through a pool. However, cone geysers shoot water out in a fairly narrow jet, usually from a cone-like formation.Full Answer >
The most common type of igneous rock, basalt, also known as malfic rock, can be found on oceanic plates at divergent plate boundaries. Intermediate and felsic igneous rocks show up along continental margins, as well. Because igneous rocks form from the cooling of lava and magma, they can be found around areas where volcanic activity is or has been present.Full Answer >
Fossils are almost always found in sedimentary rock strata. Sedimentary rocks are the most abundant type on the surface of the Earth, and they are the only type that forms under conditions that are likely to preserve organic artifacts.Full Answer >
Pumice rock is found all over the planet and on every continent. This textured rock is formed when volcanoes erupt, and it is carried from shore to shore after being generated by underwater volcanoes. The molten rock combines with water and air underground, and it erupts as a frothy liquid from vents in the Earth's surface. This hot frothy rock solidifies into hard, airy pumice stones.Full Answer >